US Patent Class 392
ELECTRIC RESISTANCE HEATING DEVICES




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Current as of: June, 1999
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  DF  CLASS NOTES
*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200)
301  DF  .~ Borehole type
302  DF  .~.~ With heat exchange fluid
303  DF  .~.~ With vapor generator
304  DF  .~.~ Heating element surrounding delivery pipe
305  DF  .~.~ Suspended by cable in well
306  DF  .~.~ Plural separate heating devices
307  DF  .~ Combined with nonelectric heating means (e.g., gas, etc.)
308  DF  .~.~ For heating liquid
309  DF  .~.~ Hot plate
310  DF  .~.~ Oven type
311  DF  .~ Fluid-in-circuit type heater
312  DF  .~.~ Method
313  DF  .~.~ Portable
314  DF  .~.~ Continuous flow of fluid being heated
315  DF  .~.~.~ With means to adjust current path between electrodes
316  DF  .~.~.~.~ Responsive to condition of fluid
317  DF  .~.~.~.~ Movable dielectric means
318  DF  .~.~.~ Current control means
319  DF  .~.~.~ With discharge member for line or tank
320  DF  .~.~.~ Tube or pipe forms flow path
321  DF  .~.~.~.~ Pipe forms at least one electrode
322  DF  .~.~ With reservoir or tank
323  DF  .~.~.~ With means to adjust current path between electrodes
324  DF  .~.~ Steam or vapor generator
325  DF  .~.~.~ Line connected boiler
326  DF  .~.~.~.~ Control of electrode immersion level
327  DF  .~.~.~.~.~ By electrode current
328  DF  .~.~.~.~.~ By pressure
329  DF  .~.~.~.~ With means to adjust current path between elctrodes
330  DF  .~.~.~.~.~ Movable dielectric means
331  DF  .~.~.~.~ Electrode arrangement
332  DF  .~.~.~.~.~ Water jet electrode
333  DF  .~.~.~ Manually filled tank or container
334  DF  .~.~.~.~ With means to adjust current path between electrodes
335  DF  .~.~.~.~ With supply interlock means
336  DF  .~.~.~.~ Separate electrode compartment
337  DF  .~.~.~.~.~ Electrode compartment removable from tank
338  DF  .~.~ Electrode details
339  DF  .~ With heat storage means
340  DF  .~.~ Method
341  DF  .~.~ For fluid heating (e.g., gas or liquid, etc.)
342  DF  .~.~ For vaporization
343  DF  .~.~ For subsequent heating by radiation
344  DF  .~.~ For subsequent heating by convection
345  DF  .~.~ Means to control heating accumulating medium
346  DF  .~.~ Heat accumulating medium details
347  DF  .~ Convection space heater
348  DF  .~.~ Artificial fire
349  DF  .~.~ Central heating type
350  DF  .~.~.~ With air delivery duct
351  DF  .~.~ Floor furnace type
352  DF  .~.~ Baseboard type
353  DF  .~.~.~ With baffle
354  DF  .~.~ With intermediate heat absorber
355  DF  .~.~.~ Heated by radiant source
356  DF  .~.~.~.~ With fan blower
357  DF  .~.~.~ With fluid heat absorber
358  DF  .~.~.~.~ By fan blower
359  DF  .~.~.~.~ Wall mounted
360  DF  .~.~ Forced air type
361  DF  .~.~.~ Heating attachment for fan
362  DF  .~.~.~ Fan with heated blades
363  DF  .~.~.~ Wall mounted
364  DF  .~.~.~ Ceiling mounted
365  DF  .~.~.~ Portable
366  DF  .~.~.~.~ With fan position adjusting means
367  DF  .~.~.~.~ Multi-direction air outlet
368  DF  .~.~.~.~ With baffle
369  DF  .~.~.~.~.~ Counterflow
370  DF  .~.~ Wall mounted
371  DF  .~.~.~ In wall cavity
372  DF  .~.~ Mounted in or on window or door
373  DF  .~.~ Portable
374  DF  .~.~.~ With baffle
375  DF  .~.~ Combined with radiation
376  DF  .~.~.~ With reflector
377  DF  .~.~.~ With heat exchange fluid
378  DF  .~.~.~.~ In plural sections
379  DF  .~ Concentrated heated air stream (i.e., blast)
380  DF  .~.~ For drying body part
381  DF  .~.~.~ Wall mounted
382  DF  .~.~ With support
383  DF  .~.~ Portable
384  DF  .~.~.~ With handle
385  DF  .~.~.~.~ Pistol-grip type
386  DF  .~ Vaporizer
387  DF  .~.~ Method
388  DF  .~.~ For metal vapor deposition
389  DF  .~.~.~ With crucible
390  DF  .~.~ With disposable evaporant cartridge or container
391  DF  .~.~ By radiant heat source
392  DF  .~.~ Wall mounted
393  DF  .~.~ By light bulb heat source
394  DF  .~.~ Liquid evaporant (e.g., water, etc.)
395  DF  .~.~.~ With wick
396  DF  .~.~.~ In continuous flow line connected heater
397  DF  .~.~.~.~ Pipe or tube forms flow path
398  DF  .~.~.~.~.~ With internal heating element
399  DF  .~.~.~ Flash chamber
400  DF  .~.~.~ In-line connected closed tank (i.e., pressurized)
401  DF  .~.~.~.~ With internal heating element
402  DF  .~.~.~ In-line connected open tank or container (i.e., nonpressurized)
403  DF  .~.~.~ Container with self-contained evaporant supply
404  DF  .~.~.~.~ Hand-held
405  DF  .~.~.~.~ With separate heating chamber
406  DF  .~.~.~.~.~ Removable
407  DF  .~ Radiant heater
408  DF  .~.~ With filter or diffuser for radiant energy
409  DF  .~.~ Hand-held
410  DF  .~.~.~ With air or gas circulation
411  DF  .~.~ Lamp banks (i.e., array of plural lamps)
412  DF  .~.~.~ Adjustable lamps position
413  DF  .~.~.~.~ Adjustable individual lamp position
414  DF  .~.~.~ Lamp banks form arch
415  DF  .~.~.~ Lamp banks movable relative to stationary work during use
416  DF  .~.~ With chamber
417  DF  .~.~ For heating moving strand, web or sheet
418  DF  .~.~ With support for workpiece
419  DF  .~.~ Focussed radiant beam
420  DF  .~.~.~ Plural reflectors
421  DF  .~.~.~ Elliptical or ellipsoidal reflector
422  DF  .~.~ With reflector
423  DF  .~.~.~ Elongated reflector
424  DF  .~.~.~.~ Heating element in transparent tubular envelope
425  DF  .~.~.~.~ With exposed radiant heating element
426  DF  .~.~.~ Bowl-shaped reflector
427  DF  .~.~.~.~ Annular heating element concentric with reflector axis
428  DF  .~.~.~.~ Linear heating element aligned with reflector axis
429  DF  .~.~.~.~.~ Coiled on core
430  DF  .~.~.~ Wall mounted
431  DF  .~.~.~ Collapsible or foldable reflector
432  DF  .~.~ Radiant extended surface type heater
433  DF  .~.~.~ With exposed radiant heating element
434  DF  .~.~.~.~ On ceramic support structure
435  DF  .~.~.~ With heat radiating panel
436  DF  .~.~.~.~ Wall or ceiling mounted
437  DF  .~.~.~.~.~ Plural panels
438  DF  .~.~.~.~ Heating element formed as coating on radiating panel surface
439  DF  .~.~.~.~.~ Nonmetallic panel
440  DF  .~.~ Multi-direction radiant heat output
441  DF  .~ Tank or container type liquid heater
442  DF  .~.~ Pour-in displacement discharge type tank
443  DF  .~.~ Flexible container (e.g., water bottle, etc.)
444  DF  .~.~ Portable container or tank
445  DF  .~.~.~ Plural compartments
446  DF  .~.~.~ With agitator
447  DF  .~.~.~ With internally positioned heating element
448  DF  .~.~.~.~ Removably inserted through fill opening
449  DF  .~.~ Line connected tank
450  DF  .~.~.~ Plural serially connected compartments
451  DF  .~.~.~ With immersion heating element
452  DF  .~.~.~.~ With baffle or guard
453  DF  .~.~.~.~ Removably insertable into tubular receptacle in tank
454  DF  .~.~.~.~ Plural heating zones
455  DF  .~.~.~.~ With heating element mounting arrangements
456  DF  .~.~.~.~ With heat exchange fluid
457  DF  .~.~.~.~ With protecting means against galvanic corrosion
458  DF  .~.~.~ With external heater
459  DF  .~.~.~.~ Clamped or secured to tank wall
460  DF  .~.~.~.~ Producing radiation
461  DF  .~.~.~.~ With externally mounted circulation-type heater
462  DF  .~.~.~.~.~ Laterally disposed (i.e., side-arm type)
463  DF  .~.~.~ With timer controlled energization
464  DF  .~.~.~.~ Off-peak power
465  DF  .~ Continuous flow type fluid heater
466  DF  .~.~ Method
467  DF  .~.~ With hot plate
468  DF  .~.~ Pipeline tracing
469  DF  .~.~.~ Skin effect heater type (e.g., S.E.C.T., etc.)
470  DF  .~.~ Disposable cartridge, tube or bag forms heated flow path (e.g., blood bag, etc.)
471  DF  .~.~ Combined liquid flow heater and pump unit
472  DF  .~.~ Flexibe (e.g., hose, etc.)
473  DF  .~.~ Fluid heater carried on discharge member
474  DF  .~.~.~ With flow control valve (e.g., faucet, etc.)
475  DF  .~.~.~.~ Valve turns heating element on and off
476  DF  .~.~.~ Hand-held discharge member
477  DF  .~.~.~.~ With storage container for fluid to be heated
478  DF  .~.~ Fluid conveying tube or pipe comprising resistive heating element
479  DF  .~.~ Externally heated line connected section
480  DF  .~.~.~ Pipe or tube forms flow path
481  DF  .~.~.~.~ Coiled
482  DF  .~.~.~ Plural pipes or tubes form flow path
483  DF  .~.~.~ Heating element producing radiation
484  DF  .~.~.~ Block forms flow path
485  DF  .~.~ Heated line section with heating element internal of flow path
486  DF  .~.~.~ Plural pipes or tubes form flow path
487  DF  .~.~.~ With jacket for heating element
488  DF  .~.~.~ Pipe or tube forms flow path
489  DF  .~.~.~.~ With jacket for heating element
490  DF  .~.~.~ Plural heated line sections (e.g., series or parallel, etc.)
491  DF  .~.~.~ With baffle-defined flow path
492  DF  .~.~.~.~ Producing counterflow circulation
493  DF  .~.~.~.~.~ Heating element integral with baffle
494  DF  .~.~.~ Block forms flow path
495  DF  .~.~ Plural different fluids simultaneously heated
496  DF  .~.~ With heat exchange fluid
497  DF  .~ Immersion heater details
498  DF  .~.~ With thermostatic control means
499  DF  .~.~ Buoyant in liquid
500  DF  .~.~ With plural heating elements
501  DF  .~.~ With particular mounting means
502  DF  .~.~ Having positive temperature coefficient
503  DF  .~.~ Particular sheath or jacket composition