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Class Information
Number: 92/222
Name: Expansible chamber devices > Piston > Open-ended hollow skirt type (e.g., trunk type) > Specific or diverse material; or welded, brazed or soldered joint
Description: Apparatus in which the piston or a portion thereof is composed of (1) two or more different materials (2) a single material which has been treated to provide portions of the piston with specific properties which are different from the properties of another portion thereof (3) a specific material or (4) a welded brazed or soldered joint.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7594467 |
Internal combustion engine with improved thermal efficiency |
Sep. 29, 2009 |
| 7127813 |
Method for the production of pistons having depression edge armoring, for internal combustion engines |
Oct. 31, 2006 |
| 6899017 |
Wheel cylinder for actuating a vehicle brake and a method of manufacturing same |
May. 31, 2005 |
| 6883418 |
Carbon piston for an internal combustion engine |
Apr. 26, 2005 |
| 6763757 |
Process for manufacturing a one-piece cooling-channel piston |
Jul. 20, 2004 |
| 6739239 |
Caston piston |
May. 25, 2004 |
| 6595341 |
Aluminum-coated plastic member |
Jul. 22, 2003 |
| 6554588 |
Composite piston for a vibration pump |
Apr. 29, 2003 |
| 6508162 |
Dual alloy piston and method of manufacture |
Jan. 21, 2003 |
| 6443048 |
Piston for a cylinder and a method for its manufacture |
Sep. 3, 2002 |
| 6223701 |
Cooled one piece piston and method |
May. 1, 2001 |
| 6032570 |
Composite piston for machine |
Mar. 7, 2000 |
| 5996471 |
Aluminum alloy for internal-combustion piston, and aluminum alloy piston |
Dec. 7, 1999 |
| 5934174 |
Lightweight articulated piston head and method of making the piston head |
Aug. 10, 1999 |
| 5901772 |
Method for casting pistons |
May. 11, 1999 |
| 5884550 |
Integral ring carbon-carbon piston |
Mar. 23, 1999 |
| 5850777 |
Floating wrist pin coupling for a piston assembly |
Dec. 22, 1998 |
| 5740788 |
Fiber reinforced ceramic matrix composite piston and cylinder/sleeve for an internal combustion engine |
Apr. 21, 1998 |
| 5653021 |
Production process of a piston |
Aug. 5, 1997 |
| 5601010 |
Piston unit of an internal combustion engine |
Feb. 11, 1997 |
| 5505171 |
Reinforced insert for a metal piston |
Apr. 9, 1996 |
| 5499572 |
Bi-tech piston |
Mar. 19, 1996 |
| 5480847 |
Brake assembly |
Jan. 2, 1996 |
| 5440925 |
Flow calibrator |
Aug. 15, 1995 |
| 5425306 |
Composite insert for use in a piston |
Jun. 20, 1995 |
| 5404792 |
Piston for internal combustion engine |
Apr. 11, 1995 |
| 5359922 |
Head of two welded parts for two-piece articulated piston |
Nov. 1, 1994 |
| 5327813 |
Wrist pin having a ceramic composite core |
Jul. 12, 1994 |
| 5309818 |
Method for the manufacture of a cooled piston |
May. 10, 1994 |
| 5301599 |
Pistons with ring groove reinforcing |
Apr. 12, 1994 |
| 5255592 |
Wrist pin and method for manufacturing a wrist pin |
Oct. 26, 1993 |
| 5245913 |
Piston of internal combustion engine |
Sep. 21, 1993 |
| 5226311 |
Fluid flow generating apparatus |
Jul. 13, 1993 |
| 5207147 |
Method for the manufacture of a piston head having a cooling chamber and piston head obtained from said method |
May. 4, 1993 |
| 5193435 |
Piston with ceramic load-transmitting pads |
Mar. 16, 1993 |
| 5174193 |
Pistons for engines or motors |
Dec. 29, 1992 |
| 5158008 |
Light plunger piston for internal combustion engines |
Oct. 27, 1992 |
| 5144885 |
Ceramic-metal friction welding member and ceramic cast-in bonded piston made thereof |
Sep. 8, 1992 |
| 5141416 |
Plunger for a downhole reciprocating oil well pump and the method of manufacture thereof |
Aug. 25, 1992 |
| 5136992 |
Piston for internal combustion engines with forged sections made of steel |
Aug. 11, 1992 |
| 5127494 |
Disk brake with a thermally insulated working chamber |
Jul. 7, 1992 |
| 5115770 |
Aluminum casting alloy for high strength/high temperature applications |
May. 26, 1992 |
| 5094149 |
Pistons having a component incorporated therein |
Mar. 10, 1992 |
| 5065508 |
Two-piece piston and method of manufacturing the same |
Nov. 19, 1991 |
| 5063894 |
Pressure-diecast light-alloy piston for internal combustion engines |
Nov. 12, 1991 |
| 5042364 |
Piston structure for internal combustion engine |
Aug. 27, 1991 |
| 4987867 |
Piston for internal combustion engines |
Jan. 29, 1991 |
| 4972898 |
Method of forming a piston containing a cavity |
Nov. 27, 1990 |
| 4942804 |
Piston with ceramic insert that covers piston head portion defining cavity |
Jul. 24, 1990 |
| 4941397 |
Piston assembly for internal combustion engine |
Jul. 17, 1990 |
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