US Patent Class 285
PIPE JOINTS OR COUPLINGS




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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  SAFETY RELEASE
2  DF  .~ With frangible or deformable element
3  DF  FRANGIBLE ELEMENT
4  DF  .~ Score line or groove
5  DF  IRRIGATION TYPE (GUIDE AND SUPPORT)
6  DF  .~ Released by conduit motion
7  DF  VACUUM CLEANER TYPE
8  DF  FAUCET TYPE (E.G., SLIP-ON)
9.1  DF  WITH MAGNETIC ELEMENT
9.2  DF  CONTACT ONLY
10  DF  LIQUID SEAL
11  DF  .~ With relative motion
12  DF  CONVERTIBLE
13  DF  WITH LEAKAGE OR DRIP DISPOSAL
14  DF  .~ Weep holes
15  DF  REPAIR
16  DF  .~ Removable wear element
17  DF  .~.~ Alternate wear parts
18  DF  WITH ASSEMBLY MEANS OR FEATURE
19  DF  .~ Spaced plates
20  DF  .~.~ Penetrating
21.1  DF  .~ Molded joint facilitator
21.2  DF  .~.~ Having embedded facilitator
21.3  DF  .~.~ Having solvent facilitator
22  DF  .~.~ Spacing means (e.g., lugs)
23  DF  .~ With holding means functioning only during transportation assembly or disassembly
24  DF  .~ Guide and support
25  DF  .~.~ Plural noncommunicating (e.g., train pipe type)
26  DF  .~.~.~ With latch or lock
27  DF  .~ Guide
28  DF  .~.~ Plural noncommunicating
29  DF  .~.~.~ With latch or lock
30  DF  .~ Combined inlet and outlet
31  DF  .~ Inserted section
32  DF  .~.~ Threaded telescopic
33  DF  .~ Quick release
34  DF  .~.~ Radially moved segmented threads (e.g., chuck type)
35  DF  .~.~.~ Pivoted segments
36  DF  .~ Attached thread-jamming preventer
37  DF  .~ With winder for packing or clamp
38  DF  .~ Handle or handwheel for rotary engagement
39  DF  .~ Particular tool-engaging means or with tool
40  DF  .~ Thread-cutting means
41  DF  WITH HEATING OR COOLING
42  DF  ROOF OR FLOOR DRAIN FLASHING TYPE
43  DF  .~ Angled
44  DF  .~.~ Adjustable pitch
45  DF  WITH CASING, LINING OR PROTECTOR
46  DF  .~ Escutcheon type
47  DF  .~ Insulated
48  DF  .~.~ Between serially connected parts
49  DF  .~.~.~ Intermediate resilient conduit (noise-dampener)
50  DF  .~.~.~ By intermediate joint
51  DF  .~.~.~.~ Ball and socket
52  DF  .~.~.~.~ Screw thimble
53  DF  .~.~.~ Sleeve
54  DF  .~.~.~ Socket
55  DF  .~ Lined
56  DF  WATER CLOSET TYPE, FLOOR-SUPPORTED
57  DF  .~ Flexible diaphragm or bellows
58  DF  .~ Intermediate coupling
59  DF  .~.~ Tapered spigot
60  DF  .~ Tapered spigot
61  DF  WITH SUPPORT
62  DF  .~ Vehicle
63  DF  .~.~ Railway
64  DF  .~ Static building construction
65  DF  IDENTICAL HALVES (E.G., TRAIN LINE TYPE)
66  DF  .~ With intermediate sleeve
67  DF  .~ Side slide
68  DF  .~ Transverse port
69  DF  .~.~ Auxiliary detent
70  DF  .~ Longitudinal port
71  DF  .~.~ Pivoted hook or loop
72  DF  .~.~.~ Auxiliary detent
73  DF  .~.~ Integral hook
74  DF  .~.~.~ Oscillating engagement
75  DF  .~.~.~.~ Reciprocating conduit
76  DF  .~.~.~.~ Auxiliary detent
77  DF  .~.~.~.~.~ Reciprocating
78  DF  .~.~.~.~.~.~ Key or wedge
79  DF  .~.~.~ Auxiliary detent
80  DF  WITH LOCK OR SEAL
81  DF  WITH MEANS BLOCKING RELEASE OF HOLDING MEANS
82  DF  .~ Auxiliary latch
83  DF  .~.~ Line pressure-responsive
84  DF  .~.~ Reciprocating
85  DF  .~.~.~ With manipulator
86  DF  .~.~.~ Locking sleeve
87  DF  .~.~ Pivoted
88  DF  .~.~.~ With manipulator
89  DF  .~ Lock nut or washer
90  DF  .~ Set screw
91  DF  .~ Key or pin
92  DF  .~ Thread lock
93  DF  WITH INDICATOR, ALARM OR INSPECTION MEANS
94  DF  WITH LUBRICATION
95  DF  WITH FLUID PRESSURE SEAL
96  DF  .~ With external pressure supply
97  DF  .~.~ Inflated member
98  DF  .~ Swivel with flange in socket
99  DF  .~ Coacting opposing duplicate
100  DF  .~ With expansible chamber means
101  DF  .~.~ Piston-type reactor
102  DF  .~.~.~ With line pressure-responsive catch
103  DF  .~.~.~ Side slide
104  DF  .~ With separate, encased pipe-gripping means
105  DF  .~.~ Packing-actuated
106  DF  .~ Independent supply passage
107  DF  .~ Expansible shank
108  DF  .~ Separate retainer or positioner
109  DF  .~ Expansible internal sleeve-type gasket
110  DF  .~ Flexible lip
111  DF  .~.~ C-shaped section
112  DF  .~.~.~ Longitudinal web
113  DF  .~ Wedged gasket
114  DF  WITH STRAIN RELIEF
115  DF  .~ Extension of socket or sleeve
116  DF  .~.~ Separable
117  DF  WITH BROKEN PARTS RETAINER
118  DF  KNUCKLE JOINT WITH ACTUATING MEANS
119  DF  COMBINED
120.1  DF  HAVING PLURAL INDEPENDENT PATHS
121.1  DF  .~ Allowing relative motion of pipes
121.2  DF  .~.~ Revolvable and telescoping
121.3  DF  .~.~ Revolvable
121.4  DF  .~.~.~ Having spring biasing for maintaining a leak-proof seal
121.5  DF  .~.~.~ Having specific bearing structure
121.6  DF  .~.~ Swiveling
121.7  DF  .~.~.~ Ball and socket type
122.1  DF  .~ And at least one path having branched flow
123.1  DF  .~ For concentric tubes or pipes (e.g., well casing or wellhead type)
123.2  DF  .~.~ Having plural parallel suspended inner tubes
123.3  DF  .~.~ Having single suspended inner tube
123.4  DF  .~.~.~ Split ring type suspension means
123.5  DF  .~.~.~ Having inner tube anchored by slip means
123.6  DF  .~.~.~.~ Including packing means
123.7  DF  .~.~.~.~.~ Having means engaging slip means and compressing packing means
123.8  DF  .~.~.~.~.~.~ By bolt directly connecting slip means to packing means
123.9  DF  .~.~.~.~.~ Having radially applied orienting means
123.11  DF  .~.~.~.~ Having slip means actuator
123.12  DF  .~.~.~ Including a seal
123.13  DF  .~.~.~.~ Held by a means applied radially (e.g., set crew)
123.14  DF  .~.~.~.~ Compressed by tightening a bolt coaxial to tubing
123.15  DF  .~.~ Double-walled or duplex joint
123.16  DF  .~.~.~ Wall configured as mating complementary type (e.g., hot air ducts)
123.17  DF  .~.~ Joint fabricated from material to compensate for movement
124.1  DF  .~ Parallel paths
124.2  DF  .~.~ Having spacer means for pipes or tubes
124.3  DF  .~.~.~ Apertured plate type
124.4  DF  .~.~.~ Including a fitting, boss, or nipple means
124.5  DF  .~.~ Located within block type connector for ducts
125.1  DF  FOR BRANCHED PATH
126.1  DF  .~ Having an access opening and removable cover
127.1  DF  .~ Including a swivel joint
127.2  DF  .~.~ Double Y-type
128.1  DF  .~ Allowing for movement parallel to path (e.g., expansion joint)
129.1  DF  .~ And having additional, integral fitting, branch, or coupling for a means such as a vent
129.2  DF  .~.~ Plus a bend, flange, pocket, or chamber for antisiphon
130.1  DF  .~ Intersecting paths (e.g., X- or cross-type)
131.1  DF  .~ Y-type, (symmetrical along the centerline)
132.1  DF  .~ (Y-type) having a straight portion and an angled leg
133.11  DF  .~ T-type
133.21  DF  .~.~ Having a seal, gasket, O-ring, or packing
133.3  DF  .~.~ Having a pipe-receiving bell, socket or mouth
133.4  DF  .~.~ Having threaded portions
133.5  DF  .~.~ Having reinforcement
133.6  DF  .~.~ For thin-walled material (e.g., sheet-metal)
134.1  DF  U-TYPE (E.G., RETURN BEND)
135.1  DF  .~ Detachable
135.2  DF  .~.~ Having yoke-type clamp
135.3  DF  .~.~.~ Having a removable bushing
135.4  DF  .~.~ Having coupling sleeve
135.5  DF  .~.~.~ Secured by bolt
136.1  DF  PIPE TO DISCREET NIPPLE OR SLEEVE TO PLATE (I.E., THREE SUCCESSIVE PIECES)
137.11  DF  .~ Pipe to nipple connection dependent on nipple to plate connection
138.1  DF  .~ Ball and socket
139.1  DF  .~ Plate clamped between flanged nipple and separate fastener
139.2  DF  .~.~ Nipple includes seal
139.3  DF  .~.~ Nipple includes securing means
140.1  DF  .~ Expandable detent engages plate to hold nipple
141.1  DF  .~ Nipple sealed to plate
142.1  DF  .~ Nipple bolted to plate
143.1  DF  .~ Nipple threaded to plate
144.1  DF  SERIAL,RELATIVELY MOVABLE PORTIONS
145.1  DF  .~ Having telescoping portion
145.2  DF  .~.~ Pivot or swivel
145.3  DF  .~.~ Ball connector
145.4  DF  .~.~ Sleeve
145.5  DF  .~.~.~ Bellows-type
146.1  DF  .~ Linked ball and socket portions
146.2  DF  .~.~ Having multiplex socket
146.3  DF  .~.~ Having ball between opposed sockets
147.1  DF  .~ Plural swivels
147.2  DF  .~.~ Having spring
147.3  DF  .~.~ Having nozzle
148.1  DF  .~ Serial diverse single flow path or line
148.3  DF  .~.~ Flexible
148.5  DF  .~.~ Intermediate joint with expansible spigots
148.6  DF  .~.~ Compound coupling (e.g., leak-gland type)
148.7  DF  .~.~.~ Having molded or bonded joint
148.8  DF  .~.~.~.~ Having bolted or screwed flange or clamp
148.9  DF  .~.~ Having bonded component
148.11  DF  .~.~ Diverse materials
148.12  DF  .~.~.~ Having bonded component
148.13  DF  .~.~.~ Nonmetal to metal
148.14  DF  .~.~.~.~ Quick connect or release
148.15  DF  .~.~.~.~ Having swivel
148.16  DF  .~.~.~.~ Having serrated nipple
148.17  DF  .~.~.~.~ Having clamp
148.18  DF  .~.~.~.~ Reducer
148.19  DF  .~.~ Diverse coupling interfaces
148.21  DF  .~.~.~ Quick connect or release
148.22  DF  .~.~ Diverse size or shape
148.23  DF  .~.~.~ Reducer
148.24  DF  .~.~.~.~ Sheet-metal (e.g., stove duct, etc.)
148.25  DF  .~.~.~.~ Having bolted flange
148.26  DF  .~.~.~.~ Having clamp
148.27  DF  .~.~.~ Eccentric
148.28  DF  .~.~ Having bolted or screwed flange or clamp
148.2  DF  .~.~ Quick connect or release
148.4  DF  .~.~ Having swivel
149.1  DF  CONNECTOR FOR CONDUIT HOUSING ELECTROMAGNETIC LINE:
150.1  DF  .~ Underground
151.1  DF  .~ Water tight
152.1  DF  .~ Multiple passage
153.1  DF  .~ Including swivel
153.2  DF  .~.~ Having plural swivels
153.3  DF  .~.~ Having swivel and spring
154.1  DF  .~ Having box and connector
154.2  DF  .~.~ Including flexible armored sheath
154.3  DF  .~.~.~ Including screw operated clamp
154.4  DF  .~.~ Including screw operated clamp
179  DF  ELBOW
179.1  DF  .~ With access opening
179.2  DF  .~.~ Sheet-metal
180  DF  .~ Cooperating saddle clamp
181  DF  .~ Serially connected, adjustable
182  DF  .~ Nesting parts
183  DF  .~ Sheet metal
184  DF  ADJUSTABLE ANGLE
185  DF  .~ With center bolt
187  DF  TEMPERATURE-RESPONSIVE
188  DF  SIDE TO PIPE SIDE
189  DF  END TO SIDE OR PLATE (E.G., REINFORCEMENT)
190  DF  .~ Swivel with lateral port to annular sleeve
191  DF  .~ Bolt or hook in flow (e.g., center bolt)
192  DF  .~ Penetrating (e.g., secant)
193  DF  .~.~ Fixture
194  DF  .~.~ Hole edge clamp
195  DF  .~.~.~ Transverse screw
196  DF  .~ Expansible packing on spigot
197  DF  .~ Saddle-type clamp
198  DF  .~.~ Yoke with radial screw at bight
199  DF  .~.~ Yoke with thread on free ends
200  DF  .~ Flexible or yielding plate
201  DF  .~ Sput
202  DF  .~.~ Interlocked
203  DF  .~.~.~ Plate edge locks sput
204  DF  .~.~.~ Packed
205  DF  .~.~ Clamped plate
206  DF  .~.~.~ Screw clamp
207  DF  .~.~.~.~ With conduit clamping means
208  DF  .~.~.~.~ Attachable from one side of plate
209  DF  .~.~.~.~.~ Lugged nipple
210  DF  .~.~.~.~.~.~ Movable lug
211  DF  .~ Countersunk packed
212  DF  .~.~ Screw-compressed
213  DF  .~ Gland
214  DF  .~.~ Internal with expanding means
215  DF  .~.~ External of conduit
216  DF  .~.~.~ Expansible
217  DF  .~.~.~.~ With conduit clamping means
218  DF  .~.~.~.~.~ Transverse screw
219  DF  .~ Screw
220  DF  .~.~ With packing
221  DF  .~.~ Necked plate
222  DF  .~ Expanded or swaged pipe
222.1  DF  FOR PLURAL COMPONENT LINE (E.G., FLEXIBLE TYPE)
222.2  DF  .~ Metal, elastomeric (e.g., rubber), and fabric layers
222.3  DF  .~ Elastomeric and fabric layers
222.4  DF  .~ Metal and elastomeric layers
222.5  DF  .~ Distinct metal layers (e.g., wire cloth, etc.)
223  DF  FLEXIBLE JOINT, RIGID MEMBERS
224  DF  .~ Radial and longitudinal expansion compensators
225  DF  .~ Diaphragm
226  DF  .~ Bellows
227  DF  .~.~ Multiple
228  DF  .~.~.~ Balanced
229  DF  .~.~ Single fold type
230  DF  .~ Concrete, clay, or masonry pipe
231  DF  .~ Socketed packing type
232  DF  .~.~ With conduit gripping means (e.g., wedge ring)
233  DF  .~.~ Beaded conduit
234  DF  .~.~ Flared conduit
235  DF  .~ Resilient sleeve type
236  DF  .~.~ Clamped
237  DF  .~.~ With spigot and socket ends
238  DF  NONMETAL TO METAL
239  DF  .~ Internal member (e.g., sleeve or nipple)
240  DF  .~.~ Flexible tip pipe
241  DF  .~.~.~ External clamp
242  DF  .~.~ External clamp or holder
243  DF  .~.~.~ Movable jaw
244  DF  .~.~.~ Spring
245  DF  .~.~.~ Screw-compressed
246  DF  .~.~.~.~ Thimble gland
247  DF  .~.~.~.~ Thimble
248  DF  .~.~.~.~.~ Separable means between hose and clamp
249  DF  .~.~.~.~.~.~ Wedge ring
250  DF  .~.~.~.~ Gland
251  DF  .~.~.~.~ Screw-fed hose
252  DF  .~.~.~ Band clamp with tightener
253  DF  .~.~.~.~ Bolted
254  DF  .~.~.~ Wrapped band
255  DF  .~.~.~ Wedge
256  DF  .~.~.~ Deformation
257  DF  .~.~.~.~ Bendable spur fingers
258  DF  .~.~.~.~ Expanding internal member
259  DF  .~.~.~ Particular surface
260  DF  BOTH MEMBERS PLIABLE AND NONMETAL
261  DF  BALL AND SOCKET
262  DF  .~ With internal tie means
263  DF  .~ Radially spaced spherical surfaces
264  DF  .~ Oscillative
265  DF  .~.~ With gimbal ring
266  DF  .~ Composite ball
267  DF  .~ Spring-biased packing
268  DF  .~ Spring-biased ball
269  DF  .~.~ Socketed spring
270  DF  .~ With separate packing actuator
271  DF  .~ With removable ball seat
272  DF  SWIVEL
272.1  DF  .~ With access opening
273  DF  .~ Transverse cylinder in socket
274  DF  .~ With yoke
275  DF  .~ Pipe in socket type
276  DF  .~.~ With ball, ring or pin detent
277  DF  .~.~.~ With manipulator
278  DF  .~.~ With flange in socket
279  DF  .~.~.~ Spring-pressed flange
280  DF  .~.~.~ Flange locked axially
281  DF  .~.~.~.~ Packed
282  DF  .~ With rotation limits
283  DF  DETACHABLE HINGE
284.1  DF  WITH ACCESS OPENING
285.1  DF  MOLDED JOINT
286.1  DF  .~ Interlocked
286.2  DF  .~.~ Deformed or having additional holding means
287.1  DF  .~ With root repellent
288.1  DF  .~ Weld
288.2  DF  .~.~ Axially spaced
288.3  DF  .~.~ Cold weld
288.4  DF  .~.~ Flash weld
288.5  DF  .~.~ Having additional holding means
288.6  DF  .~.~.~ Interlocked
288.7  DF  .~.~ Having disassembly feature
288.8  DF  .~.~ Having crack arresting feature
288.9  DF  .~.~ Reinforced
288.11  DF  .~.~ Having pre-formed weld ring
289.1  DF  .~ Solder
289.2  DF  .~.~ Having additional holding means
289.3  DF  .~.~.~ Interlocked
289.4  DF  .~.~ Having disassembly feature
289.5  DF  .~.~ Having pre-placed solder
290.1  DF  .~ Composite pipe (ends)
290.2  DF  .~.~ Locked reinforcement
290.3  DF  .~.~ Interlocked with pipe end
290.4  DF  .~.~.~ Having additional holding means
290.5  DF  .~.~ Expansion/contraction
291.1  DF  .~ Having screw interlock
291.2  DF  .~.~ Having interrupted thread
292.1  DF  .~ With lug and slot interlock
293.1  DF  .~ Lining or cover molded to pipe end
294.1  DF  .~ Sleeve
294.2  DF  .~.~ Wrapped
294.3  DF  .~.~ Sprue
294.4  DF  .~.~.~ Having additional holding means
295.1  DF  .~ With packing filler
295.2  DF  .~.~ Wedge ring type
295.3  DF  .~.~ Elastomeric
296.1  DF  .~ Sprue
298  DF  VARIABLE LENGTH
299  DF  .~ With bellows seal
300  DF  .~.~ Internal sleeve
301  DF  .~.~ With limit means
302  DF  .~ Telescopic with relative motion
303  DF  .~ Step adjustment
304  DF  FRICTION DETENT (E.G., BREAKAWAY TYPE)
305  DF  ESSENTIAL CATCH
306  DF  .~ Line pressure-responsive
307  DF  .~ Operated by conduit motion
308  DF  .~ With manipulator
309  DF  .~.~ With means to increase contact pressure (e.g., tightener)
310  DF  .~.~.~ Separate actuator
311  DF  .~.~.~ Dead center lever systems (self-locking)
312  DF  .~.~.~ Cam lever
313  DF  .~.~ Restrainer for manipulator
314  DF  .~.~ Cam sleeve
315  DF  .~.~.~ Reciprocating sleeve
316  DF  .~.~.~.~ Spring-biased sleeve
317  DF  .~.~ Spring-biased catch
318  DF  .~ Coil spring
319  DF  .~ Leaf spring
320  DF  .~ Pivoted
321  DF  .~ Resilient ring
322  DF  MOVABLE JAW (E.G., CONTRACTIBLE SOCKET)
323  DF  .~ Wedge bushing
324  DF  .~ Reducing bushing
325  DF  SIDE SLIDE
326  DF  .~ Clamping lever
327  DF  .~ Screw-thimble tightener
328  DF  PARTICULAR INTERFACE
329  DF  .~ Diverse metal
330  DF  .~ Interlocked or overlapped
331  DF  .~ Annular socket
332  DF  .~ Tapered
332.1  DF  .~.~ Conoidal
332.2  DF  .~.~ Packed
332.3  DF  .~.~.~ Interface
332.4  DF  .~.~ Discontinuous interface surface
333  DF  .~.~.~ Threaded (e.g., drill pipe type)
334  DF  .~.~.~.~ Flat crest
334.1  DF  .~.~ Adapter seat
334.2  DF  .~.~.~ Double-tapered internal sleeve
334.3  DF  .~.~.~ Elastomeric
334.4  DF  .~.~ Dissimilar
334.5  DF  .~.~ Flared
335  DF  PACKED
336  DF  .~ With cooperating opposed packing grooves
337  DF  .~ Externally with clamp
338  DF  .~ Radially expansible, spigot-carried
339  DF  .~ Wedge
340  DF  .~.~ Toggle ring type
341  DF  .~.~ Double wedge surfaces
342  DF  .~.~ Pushed
343  DF  .~.~ Compressed
344  DF  .~ "Rolled-in" gasket
345  DF  .~ Frictional retention upon insertion
346  DF  .~.~ With packing-expanding means
347  DF  .~ Carried on cylindrical shank
348  DF  .~ With separable follower
349  DF  .~ Supplemental packing socket
350  DF  .~.~ Extrusion recess
351  DF  .~ Plural seals
352  DF  .~.~ Coacting opposed duplicates
353  DF  .~ Screw thimble-gland
354  DF  .~ Screw thimble
355  DF  .~ Screw
356  DF  .~ Gland
357  DF  .~.~ Threaded
358  DF  .~ Cam
359  DF  .~.~ Thimble
360  DF  .~.~ Lugged pipe, rotary engagement
361  DF  .~.~.~ Bayonet slot
362  DF  .~.~.~ With manipulating ring
363  DF  .~ Flanged pipe
364  DF  .~.~ Clamped
365  DF  .~.~.~ Band type
366  DF  .~.~.~.~ Screw
367  DF  .~.~.~.~.~ Tangential
368  DF  .~.~.~ Axially bolted
369  DF  .~ Sleeve
370  DF  .~.~ Internal
371  DF  .~.~.~ With external
372  DF  .~.~ Dependent
373  DF  .~.~.~ Longitudinally divided
374  DF  .~ Socket
375  DF  .~.~ Internal reciprocating packer
376  DF  .~.~ Lugged pipe, rotary engagement
377  DF  .~.~.~ With manipulating ring
378  DF  .~ Diverse metal seat
379  DF  .~ Gasket retainer
380  DF  .~.~ Resilient stud
381.1  DF  TEMPERATURE RESPONSIVE JOINT ELEMENT; E.G., SHRUNK FIT
381.2  DF  .~ Memory metal element
381.3  DF  .~.~ Having intermediate member
381.4  DF  .~ Memory plastic element
381.5  DF  .~.~ Having intermediate member
382  DF  DEFORMED
382.1  DF  .~ Both members
382.2  DF  .~.~ Simultaneous
382.4  DF  .~ Outwardly expanded
382.5  DF  .~.~ Bulged
382.7  DF  .~ By separate deformable element
383  DF  DISTINCT SPACED SERIAL
384  DF  SCREW THIMBLE-GLAND
385  DF  .~ Wedge
386  DF  SCREW THIMBLE
387  DF  .~ Removable
388  DF  .~.~ Detachable flange
389  DF  .~ Wedge
390  DF  SCREW
391  DF  .~ Interrupted thread
392  DF  .~ Attached thread bushing
393  DF  .~ Gland
394  DF  CAM
395  DF  .~ Thimble
396  DF  .~ Bayonet type
397  DF  INTERNAL SLEEVE
398  DF  .~ With external
399  DF  SOCKET
400  DF  .~ Detachable ring
401  DF  .~ Lugged pipe, rotary engagement
402  DF  .~.~ Bayonet slot
403  DF  .~ With separable fastener
404  DF  .~.~ Set screw or pin
405  DF  FLANGE
406  DF  .~ Clamped
407  DF  .~.~ Band type
408  DF  .~.~.~ With intermediate flange engaging member
409  DF  .~.~.~ Lever
410  DF  .~.~.~ Screw
411  DF  .~.~.~.~ Segmented ring
412  DF  .~.~ Axially bolted
413  DF  .~.~ Rings
414  DF  .~ Detachable
415  DF  .~.~ Split ring
416  DF  .~ Fused
417  DF  SLEEVE
418  DF  .~ Dependent
419  DF  .~.~ Longitudinally divided
420  DF  CLAMP
421  DF  .~ Wedge
422  DF  MATERIALS
423  DF  .~ Nonmetallic
424  DF  .~ Sheet
425  DF  MISCELLANEOUS
******************************
CROSS-REFERENCE ART COLLECTIONS
******************************
900  DF  BALANCED PRESSURE
901  DF  CAP CLOSURES
902  DF  CANTED RING
903  DF  CORRUGATED
904  DF  CRYOGENIC
905  DF  DIFFERENT COEFFICIENTS OF EXPANSION
906  DF  EQUIVALENTS
907  DF  ELECTRICAL FIXTURES
908  DF  EXTRUSION HOLES
909  DF  FLUOROCARBONS AND MEMORY PLASTICS
910  DF  GASKETS
911  DF  GLASS
912  DF  GEAR
913  DF  INTERDIGITATING
914  DF  IRREVERSIBLE
915  DF  MASTIC
916  DF  MOLECULAR CHANGE
917  DF  METALLIC SEALS
918  DF  O-RING
919  DF  RESINOUS
920  DF  REMOTELY CONTROLLED
921  DF  SNAP-FIT
922  DF  SAFETY AND QUICK RELEASE FOR DRILL PIPES
923  DF  SPECIFIC MATERIAL
924  DF  VENTED
925  DF  SWELLS WHEN WET *********************************
*  DD  FOREIGN ART COLLECTIONS
*********************************
FOR 100  DF  SYSTEMS (285/120)
FOR 101  DF  .~ With access opening (285/121)
FOR 102  DF  .~.~ Swivel (285/122)
FOR 103  DF  .~.~.~ With hollow center bolt (285/123)
FOR 104  DF  .~.~ Detachable return band (285/124)
FOR 105  DF  .~.~.~ With yoke clamp (285/125)
FOR 106  DF  .~.~.~.~ Removable bushing (285/126)
FOR 107  DF  .~.~ Elbow (285/127)
FOR 108  DF  .~ Pipe or cable and box (285/128)
FOR 109  DF  .~.~ With attached closure flange (285/129)
FOR 110  DF  .~ Receptacle inlet and outlet in unitary mounting (285/130)
FOR 111  DF  .~ Plural noncommunicating paths (285/131)
FOR 112  DF  .~.~ With branched flow (285/132)
FOR 113  DF  .~.~ Concentric (285/133.1)
FOR 114  DF  .~.~.~ Having suspension means (e.g., oil well head type, etc.) (285/133.2)
FOR 115  DF  .~.~.~ With relative motion (e.g., drier drum type) (285/134)
FOR 116  DF  .~.~.~.~ Ball and socket (285/135)
FOR 117  DF  .~.~ With relative motion (285/136)
FOR 118  DF  .~.~ Parallel (285/137.1)
FOR 119  DF  .~.~.~ Having suspension means (e.g., oil well head type, etc.) (285/137.2)
FOR 120  DF  .~ Inner to spaced outer tube coupling (285/138)
FOR 121  DF  .~.~ Radially compressed packing (285/139)
FOR 122  DF  .~.~ Suspended (e.g., oil well casing type) (285/140)
FOR 123  DF  .~.~.~ Radially movable support ring (split ring type) (285/141)
FOR 124  DF  .~.~.~ Inner tube coupling with integral support (285/142)
FOR 125  DF  .~.~.~.~ With intermediate member (285/143)
FOR 126  DF  .~.~.~ Slip anchored inner tube (285/144)
FOR 127  DF  .~.~.~.~ With slip actuator (285/145)
FOR 128  DF  .~.~.~.~ With unitary slip and packing assembly (285/146)
FOR 129  DF  .~.~.~.~ With slip-compressed packing (285/147)
FOR 130  DF  .~.~.~.~ With packing seat on slip (285/148)
FOR 131  DF  .~ Plural layer pipe (285/149)
FOR 132  DF  .~ Branched (285/150)
FOR 133  DF  .~.~ With relative motion (285/151)
FOR 134  DF  .~.~.~ Double Y-type (285/152)
FOR 135  DF  .~.~ With vent (285/153)
FOR 136  DF  .~.~.~ Antisiphon (285/154)
FOR 137  DF  .~.~ Y-type (285/155)
FOR 138  DF  .~.~ T-type (285/156)
FOR 139  DF  .~ U-type (285/157)
FOR 140  DF  .~ Pipe or rod-to-pipe-to-plate (285/158)
FOR 141  DF  .~.~ Dependent coupling (285/159)
FOR 142  DF  .~.~ Ball and socket (285/160)
FOR 143  DF  .~.~ Plate clamped between internal nut and shoulder or flange (285/161)
FOR 144  DF  .~.~ Expanding spigot engages plate (285/162)
FOR 145  DF  .~ Serial relatively movable joints (285/163)
FOR 146  DF  .~.~ Diverse (285/164)
FOR 147  DF  .~.~.~ With telescopic type (285/165)
FOR 148  DF  .~.~ Plural ball and socket (285/166)
FOR 149  DF  .~.~.~ With sphere intermediate two sockets (285/167)
FOR 150  DF  .~.~ Plural swivel (285/168)
FOR 151  DF  .~ Serial diverse single flow or line (285/169)
FOR 152  DF  .~.~ Intermediate joint with expansible spigots (285/170)
FOR 153  DF  .~.~ Compound (e.g., leak-gland type) (285/171)
FOR 154  DF  .~.~.~ With molded joint (285/172)
FOR 155  DF  .~.~ Diverse materials (285/173)
FOR 156  DF  .~.~.~ Nonmetal to metal (285/174)
FOR 157  DF  .~.~ Diverse coupling interfaces (285/175)
FOR 158  DF  .~.~ Diverse size or shape (285/176)
FOR 159  DF  .~.~.~ Reducer (285/177)
FOR 160  DF  .~.~.~ Eccentric (285/178)
FOR 161  DF  MOLDED JOINT (285/284)
FOR 162  DF  .~ With root repellent (285/285)
FOR 163  DF  .~ Weld (285/286)
FOR 164  DF  .~ Solder (285/287)
FOR 165  DF  .~ Composite pipe (ends) (285/288)
FOR 166  DF  .~ With screw interlock (285/289)
FOR 167  DF  .~ With lug and slot interlock (285/290)
FOR 168  DF  .~ Lining molded to pipe end (285/291)
FOR 169  DF  .~ Sleeve (285/292)
FOR 170  DF  .~.~ Wrapped (285/293)
FOR 171  DF  .~.~ Sprue (285/294)
FOR 172  DF  .~ With packing filler (285/295)
FOR 173  DF  .~.~ Wedge ring type (285/296)
FOR 174  DF  .~ Sprue (285/297)