US Patent Class 267
SPRING DEVICES



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Current as of: June, 1999
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  DF  CLASS NOTES
1.5  DF  PACKING EXPANDER OR CONSTRICTOR
80  DF  SPRING PANEL
81  DF  .~ Composite springs of diverse material, e.g., metal and non-metal
82  DF  .~.~ Vented fluid chamber modifies action of metallic spring
83  DF  .~.~ Superposed layers; metal and non-metal
84  DF  .~.~.~ Metal layer is compressible coil spring
85  DF  .~ Multistage springs
86  DF  .~ Diverse types of superposed metallic springs
87  DF  .~.~ Sinuous spring loading surface supported by other spring
88  DF  .~.~ Compressible coil spring loading surface supported by other spring
89  DF  .~ With means to vary preliminary tension of spring
90  DF  .~ With means to dampen vibration of springs, e.g., sound deadening
91  DF  .~ Spring panel comprises vertically oriented compressible coil springs
92  DF  .~.~ Plural superposed coils
93  DF  .~.~ Panel comprises spring of varying capacities
94  DF  .~.~ With padding protector on spring end
95  DF  .~.~ Loading surface includes component other than coil spring
96  DF  .~.~ With resilient side or end, e.g., edge roll
97  DF  .~.~ With reinforcement or extension for border wire
98  DF  .~.~ With diagonal surface-to-frame brace
99  DF  .~.~ Resiliently mounted on frame by tensile springs
100  DF  .~.~ Mounted on frame spanning strips
101  DF  .~.~ Spring rows supported by row separating stringers
102  DF  .~ With cantilevered surface extension, i.e., "soft edge"
103  DF  .~ Spring means spacing loading surface vertically from plane of supporting frame
104  DF  .~.~ With supplementary spacing means intermediate ends of surface
105  DF  .~.~ Stiffener or bracer for loading surface
106  DF  .~.~ Multiple sections span frame
107  DF  .~.~ By inwardly bowed portion, i.e., "fishmouth" type
108  DF  .~.~.~ With coiled apex, i.e., "safety pin" type
109  DF  .~.~ By outwardly bowed portion
110  DF  .~ Panel secured peripherally to supporting frame
111  DF  .~.~ Panel secured to tension frame inwardly
112  DF  .~.~.~ Secured by resilient connectors
2  DF  VEHICLE
3  DF  .~ Railway
4  DF  .~.~ Coil
5  DF  .~ Perambulator
6  DF  .~ Bolster
7  DF  .~.~ Leaf
183  DF  .~ Parallel depression (e.g., having stabilizer bar)
184  DF  .~.~ Duplex
185  DF  .~.~.~ Single pivot
186  DF  .~.~ Fluid stabilizer
187  DF  .~.~.~ Including torque bar or pump
188  DF  .~.~ Torque bar or tube stabilizer
189  DF  .~.~.~ And elastomeric member
190  DF  .~.~.~ And coil spring
191  DF  .~.~.~ And retarder
192  DF  .~.~ Leaf spring stabilizer
193  DF  .~.~.~ Leaf spring acting between pivoted links
194  DF  .~.~ Plural nontorsion coil springs
195  DF  .~ Mechanical spring and nonresilient retarder (e.g., shock absorber)
196  DF  .~.~ Friction (e.g., "snubber")
197  DF  .~.~.~ Including flexible strap connector
198  DF  .~.~.~.~ Strap forms friction element
199  DF  .~.~.~.~ Flat spiral spring
200  DF  .~.~.~ Having lubricating feature
201  DF  .~.~.~ Elastomeric spring or friction element
202  DF  .~.~.~.~ And helical coil spring
203  DF  .~.~.~.~.~ Plural coil springs
204  DF  .~.~.~ Friction surface on helical spring
205  DF  .~.~.~ Including cam or wedge friction element or actuator therefor
206  DF  .~.~.~.~ Helical cam surface
207  DF  .~.~.~.~ Plural axially spaced expandable friction rings
208  DF  .~.~.~.~ Including relatively rotating friction surfaces (e.g., drum type)
209  DF  .~.~.~.~ Including helical coil spring
210  DF  .~.~.~.~.~ Transversely oriented coil for biasing friction surfaces
211  DF  .~.~.~.~.~ Plural laterally spaced coils (e.g., spring group)
212  DF  .~.~.~.~.~ Nested coil springs
213  DF  .~.~.~.~.~.~ Inside friction shell
214  DF  .~.~.~ Friction surface formed on or biased by additional spring
215  DF  .~.~.~.~ Relatively rotating friction surfaces (e.g., drum type)
216  DF  .~.~.~ Coil spring for biasing vehicle parts and friction surfaces
217  DF  .~.~ Fluid retarder
218  DF  .~.~.~ With separate pump or adjustment for spring loading
219  DF  .~.~.~ Elastomeric spring
220  DF  .~.~.~.~ Mounted at end of retarder
221  DF  .~.~.~ Helical coil spring
222  DF  .~.~.~.~ Quadrilateral suspension
223  DF  .~.~.~.~ And rocking actuator arm or rotary fluid displacement member
224  DF  .~.~.~.~.~ Plural mechanical springs for biasing vehicle parts
225  DF  .~.~.~.~ Plural mechanical springs for biasing vehicle parts
226  DF  .~.~.~.~ Spring within coaxial fluid chamber
227  DF  .~.~.~ Leaf spring
228  DF  .~ Lever and nontorsion spring
229  DF  .~.~ Leaf spring
230  DF  .~.~.~ Quadrilateral suspension
231  DF  .~.~.~ And coil spring
232  DF  .~.~.~.~ And roller
233  DF  .~.~.~.~ And "overload" bumper
234  DF  .~.~.~.~ Including adjustment for spring loading
235  DF  .~.~.~.~.~ Adjusting screw coaxial with coil spring
236  DF  .~.~.~.~ Plural coils between vertically spaced leaf springs
237  DF  .~.~.~.~ Plural coaxial coils
238  DF  .~.~.~.~.~ Nested coils
239  DF  .~.~.~.~ Having leaf-end-connecting lever
240  DF  .~.~.~.~.~ Coil spring between lever and vehicle part
241  DF  .~.~.~ And fluid pressure spring
242  DF  .~.~.~ Including adjustment for spring loading
243  DF  .~.~.~ And roller or bearing to accommodate deflection of spring
244  DF  .~.~.~ Vertically spaced leaf springs (e.g., elliptic)
245  DF  .~.~.~ Having serially pivoted levers at end of spring
246  DF  .~.~.~ Transverse leaf spring
247  DF  .~.~.~ Center acting or resiliently biased lever
248  DF  .~.~ Coil spring
249  DF  .~.~.~ Enclosed spring
250  DF  .~.~.~.~ Plural coaxial coils in enclosure
251  DF  .~.~.~ Plural nontorsion coil springs
252  DF  .~.~.~.~ Coaxial
253  DF  .~.~.~.~ Differentially deflected by lever
254  DF  .~.~.~ Quadrilateral suspension
255  DF  .~.~.~ Including adjustment for spring loading
256  DF  .~.~ Fluid spring
257  DF  .~.~ Elastomeric spring
258  DF  .~.~.~ Annular or spherical
259  DF  .~ Compound
23  DF  .~.~ Leaf, coil, and fluid pressure
24  DF  .~.~ Leaf, fluid pressure and liquid
25  DF  .~.~ Leaf and torsion
26  DF  .~.~.~ Torsion coil
27  DF  .~.~.~.~ Leaf-end-connecting
28  DF  .~.~ Leaf and coil
29  DF  .~.~.~ Leaf-end-connecting
30  DF  .~.~ Leaf and rubber type
31  DF  .~.~ Leaf and fluid pressure
32  DF  .~.~.~ Leaf-end-connecting
33  DF  .~.~ Coil and rubber type
34  DF  .~.~ Coil and fluid pressure
35  DF  .~.~ Rubber type and fluid pressure
36.1  DF  .~ Leaf
37.1  DF  .~.~ And covering
37.2  DF  .~.~.~ Spiral or elastic covering
37.3  DF  .~.~.~ Three serially arranged metallic segments
37.4  DF  .~.~.~ Having lubricant reservoir or pad
38  DF  .~.~ Twin, axle interposed
39  DF  .~.~ Side bar
40  DF  .~.~ Longitudinal
41  DF  .~.~ Cantilever
42  DF  .~.~ Elliptic
43  DF  .~.~ Elliptic and leaf
44  DF  .~.~ Semielliptic
45  DF  .~.~ Semielliptic and leaf
46  DF  .~.~.~ End-to-end connected
47  DF  .~.~ Structure
48  DF  .~.~.~ Auxiliary tensioning elements
49  DF  .~.~.~ Antifriction
50  DF  .~.~.~ Lubrication
51  DF  .~.~ Broken-spring supports
52  DF  .~.~ Intermediate supports
53  DF  .~.~ Clips
260  DF  .~.~ Having specific end connection
261  DF  .~.~.~ For elliptic spring
262  DF  .~.~.~ Sliding
263  DF  .~.~.~ Including spring for biasing pivotal connection
264  DF  .~.~.~ Including threaded or grooved bearing surface
265  DF  .~.~.~ Including spring position adjustment or geared connection
266  DF  .~.~.~ Universal joint
267  DF  .~.~.~ Having rolling antifriction elements (e.g., ball bearing)
268  DF  .~.~.~ Having lubrication feature
269  DF  .~.~.~ Including elastomeric material
270  DF  .~.~.~.~ Including tapered bushing or inner and outer sleeve for cylindrical bushing
271  DF  .~.~.~ Including shackle pivoted to spring and to vehicle
272  DF  .~ Flat spiral
273  DF  .~ Torsion
274  DF  .~.~ Quadrilateral suspension
275  DF  .~.~ Helical torsion coil
276  DF  .~.~ And separate elastomeric member (e.g., bushing)
277  DF  .~.~ And adjustment for varying spring loading
278  DF  .~.~.~ Screw threaded adjustment
279  DF  .~.~ Elastomeric torsion spring
280  DF  .~.~.~ Plural axially spaced elastomeric elements
281  DF  .~.~.~ And attached inner and outer metallic sleeves
282  DF  .~.~.~.~ Plural concentric elastomeric rings
283  DF  .~.~ Multilayer leaf
284  DF  .~.~ And housing enclosing spring
285  DF  .~.~ Plural torsion spring
286  DF  .~ Coil
287  DF  .~.~ Having stiffener
288  DF  .~.~ Conical
289  DF  .~.~ Plural coils
290  DF  .~.~.~ Nested
291  DF  .~.~.~ Having guide rods extending through coils
292  DF  .~ Elastomeric
293  DF  .~.~ Including central guide rod or tube through spring
294  DF  .~.~ Having rigid spacer plate between plural elastomeric segments
64.11  DF  .~ Comprising compressible fluid
64.12  DF  .~.~ Having lockable strut
64.13  DF  .~.~ Including compressible liquid
64.14  DF  .~.~ Including chamber at sub-atmospheric pressure
64.15  DF  .~.~ With retarder
64.16  DF  .~.~.~ Leveling device
64.17  DF  .~.~.~.~ Self-pumping
64.18  DF  .~.~.~.~ Having metering pin for varying spring rate
64.19  DF  .~.~.~.~ Having flexible wall
64.21  DF  .~.~.~.~.~ Including rolling lobe between telescoping members
64.22  DF  .~.~.~ Having metering pin for varying spring rate
64.23  DF  .~.~.~ Having flexible wall
64.24  DF  .~.~.~.~ Including rolling lobe between telescoping members
64.25  DF  .~.~.~ Having plural compressible fluid springs
64.26  DF  .~.~.~ Having telescoping cylinders
64.27  DF  .~.~ Having flexible wall
64.28  DF  .~.~ Including means for charging or discharging spring
66  DF  .~ Braces
67  DF  .~.~ Yielding
68  DF  .~.~ Sliding
69  DF  ELASTIC EXTENSION DEVICES
70  DF  .~ Compression spring
71  DF  .~.~ Single
72  DF  .~.~.~ Drawbars inclosed
73  DF  .~ Tension spring
74  DF  .~.~ Single
75  DF  RECIPROCATING-BED-CUSHIONING DEVICES
113  DF  FLUID
114  DF  .~ Time delay
115  DF  .~ Draft gear
116  DF  .~ Bumper
117  DF  .~ Cushion for person
118  DF  .~ Expansible-contractible chamber device
119  DF  .~.~ Press cushion
120  DF  .~.~ Vehicle; for non-support or accessory support cushioning
121  DF  .~.~ Compound
122  DF  .~.~ Diaphragm or bellows
123  DF  .~.~.~ For valve or throttle control
124  DF  .~.~ Piston
125  DF  .~.~.~ For use in well drilling or operating
126  DF  .~.~.~ System
127  DF  .~.~.~.~ Trans-piston passage
128  DF  .~.~.~ Rigid-material-spring impelled
129  DF  .~.~.~ Seal
130  DF  PRESS CUSHION
131  DF  SEAT SUPPORT
132  DF  .~ Velocipede or motorcycle
133  DF  .~ Flexural
134  DF  FRICTION SNUBBER
135  DF  .~ Snubbed coil spring or ring pack
136  DF  RESILIENT SHOCK OR VIBRATION ABSORBER
137  DF  .~ Tool movement dampening
138  DF  .~ Draft gear
139  DF  .~ Bumper
140  DF  .~.~ Rubber
140.11  DF  .~ Including energy absorbing means or feature (e.g., supplemental vehicle equipment, such as motor mount, seat, etc., including additional fluid or friction energy absorber)
140.12  DF  .~.~ Having concentric coaxial spring between plural confining means for radial force
140.13  DF  .~.~ Axial
140.14  DF  .~.~.~ With electronic or magnetic control
140.15  DF  .~.~ With electronic or magnetic control
140.2  DF  .~ Variably preloaded
140.3  DF  .~ Having diverse resilient element
140.4  DF  .~.~ Metallic and nonmetallic
140.5  DF  .~ Diverse resistance to vibration along different axes
141  DF  .~ Nonmetallic, resilient element
141.1  DF  .~.~ Plural resilient elements with rigid spacer
141.2  DF  .~.~ Confined between coaxial, vibrating annular members
141.3  DF  .~.~.~ Including radial contact surface, e.g., tapered or shouldered member
141.4  DF  .~.~.~.~ Annular flange or collar embedded in resilient element
141.5  DF  .~.~.~.~.~ Flanged or collared innermost member
141.6  DF  .~.~.~.~ Collapsible wall
141.7  DF  .~.~.~.~ Arcuate or tapered contact surface
142  DF  CUSHION FOR HUMAN COMFORT
143  DF  .~ Compound
144  DF  .~ Zigzag
145  DF  .~ Rubber
146  DF  .~ Fibrous pad
147  DF  COMPRESSED WIRE MESH
148  DF  FIBROUS
149  DF  .~ Glass fiber
150  DF  CENTERING DEVICE
151  DF  COMPOUND
152  DF  .~ Rubber
153  DF  RUBBER
154  DF  TORSION
155  DF  .~ Coil
156  DF  .~.~ Volute
157  DF  .~.~ Also compressible or expansible
158  DF  BENDABLE ALONG FLAT SURFACE (E.G., LEAF SPRING)
159  DF  .~ Snap spring
160  DF  .~ Flexural support
161  DF  .~ Ring or annular spider
162  DF  .~.~ Pair or pack
163  DF  .~ Including tang or spider
164  DF  .~ Bow spring or superposed spring elements
165  DF  .~.~ Zigzag or plural
166  DF  COIL
166.1  DF  .~ Conical
167  DF  .~ Circular
168  DF  .~ Plural, one within another
169  DF  .~ Including internal brace
170  DF  .~ Including end thrust member
171  DF  .~.~ Equilibrium or over-center
172  DF  .~.~ Including cam
173  DF  .~.~ Including lever
174  DF  .~.~ For dynamic or work environment
175  DF  .~.~.~ Adjustable
176  DF  .~.~.~ Reset
177  DF  .~.~ Adjustable
178  DF  .~.~ Support type
179  DF  .~.~ Particular end connection
180  DF  .~ Irregular
181  DF  FORAMINATED
182  DF  MISCELLANEOUS
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DIGESTS
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DIG 1  DD  Constant height
DIG 2  DD  Constant height, self-pumping
DIG 3  DD  Spring buckle