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Class Information
Number: 92/249
Name: Expansible chamber devices > Piston > Nonmetallic portion > Flexible
Description: Apparatus in which the nonmetallic material is of a type which is pliable.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7455506 |
Injection moldable piston rings |
Nov. 25, 2008 |
| 7322272 |
Piston and a power cylinder fitted therewith |
Jan. 29, 2008 |
| 6920819 |
Uniform piston ring fill |
Jul. 26, 2005 |
| 6848354 |
Unitary rod/piston assembly |
Feb. 1, 2005 |
| 6553892 |
Mounting structure for piston packing |
Apr. 29, 2003 |
| 6354820 |
Pump |
Mar. 12, 2002 |
| 6327963 |
Piston or plunger and a method for making the same |
Dec. 11, 2001 |
| 6305265 |
Method and apparatus for pressurizing vaporous fluids |
Oct. 23, 2001 |
| 6035634 |
Compact, resistance regulated, multiple output hydraulic tool and seal valve arrangement |
Mar. 14, 2000 |
| 5884550 |
Integral ring carbon-carbon piston |
Mar. 23, 1999 |
| 5813313 |
Piston for a fluid power cylinder |
Sep. 29, 1998 |
| 5794517 |
Piston assembly |
Aug. 18, 1998 |
| 5746112 |
Piston for tank |
May. 5, 1998 |
| 5735188 |
External slave cylinder for hydraulic clutch release system |
Apr. 7, 1998 |
| 5520092 |
Piston of shock absorber |
May. 28, 1996 |
| 5363744 |
Accumulator piston having multiple elastomeric seals |
Nov. 15, 1994 |
| 5355775 |
Pressure-transmitting hydraulic cylinder |
Oct. 18, 1994 |
| 5353691 |
Self-lubricating piston for pharmaceutical container |
Oct. 11, 1994 |
| 5347915 |
Piston compressor for the oilfree compression of gases |
Sep. 20, 1994 |
| 5259294 |
Shock-absorbing piston made up of dissimilar joined parts, blank for the piston and method for manufacturing the piston |
Nov. 9, 1993 |
| 5234335 |
Hydraulically, pneumatically or mechanically driven power unit |
Aug. 10, 1993 |
| 5222466 |
Internal combustion engine with flexible/piston cylinder |
Jun. 29, 1993 |
| 5199114 |
Drain clearing device |
Apr. 6, 1993 |
| 5154109 |
Composite piston assembly |
Oct. 13, 1992 |
| 5094148 |
Piston stem insert for a carpule based piston |
Mar. 10, 1992 |
| 5092496 |
Dispenser for flowable materials having a piston with a flexible sealing rim |
Mar. 3, 1992 |
| 4944215 |
Fluid actuated cylinder assembly with a floating cylinder head |
Jul. 31, 1990 |
| 4909520 |
Seal |
Mar. 20, 1990 |
| 4898082 |
Molded plastic air cylinder |
Feb. 6, 1990 |
| 4885978 |
Fluid-operated miniature engine |
Dec. 12, 1989 |
| 4800801 |
Pump |
Jan. 31, 1989 |
| 4779842 |
Height-adjustable rubber pot bearing with an elastomer plate |
Oct. 25, 1988 |
| 4743033 |
Dynamic seal assembly for piston and cylinder operating in subterranean wells |
May. 10, 1988 |
| 4694734 |
Sealing construction for slide type vacuum pump with finger portions of spring element pressing cylindrical portion of seal element against cylinder bore |
Sep. 22, 1987 |
| 4687182 |
Height adjustable pot bearing |
Aug. 18, 1987 |
| 4676143 |
Piston seal device for reciprocating compressor |
Jun. 30, 1987 |
| 4651623 |
Work cylinder having a piston member with an integral cushioning arrangement |
Mar. 24, 1987 |
| 4610195 |
Piston for a hydraulic piston machine of the multiple displacement type |
Sep. 9, 1986 |
| 4596317 |
Disc brake piston and brake pad assembly |
Jun. 24, 1986 |
| 4539895 |
Sealing device |
Sep. 10, 1985 |
| 4484512 |
Seal, scraper, and guide for double-acting piston |
Nov. 27, 1984 |
| 4466335 |
Sealing for variable volume device |
Aug. 21, 1984 |
| 4459899 |
Single acting reciprocating pump piston |
Jul. 17, 1984 |
| 4452370 |
Bottom closure for container |
Jun. 5, 1984 |
| 4428276 |
O-Ring seal for piston of double-acting fluid pressure cylinder |
Jan. 31, 1984 |
| 4401012 |
Piston for disc brakes |
Aug. 30, 1983 |
| 4378726 |
Piston designed for use with a magnetic force pickup |
Apr. 5, 1983 |
| 4376472 |
Cylinder piston device |
Mar. 15, 1983 |
| 4317408 |
Wear resistant pump packing cup |
Mar. 2, 1982 |
| 4315454 |
Piston for a metering device and a method of producing same |
Feb. 16, 1982 |
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