US Patent Class 392
ELECTRIC RESISTANCE HEATING DEVICES
 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
| 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 |