Bizarre Patents
A helium-filled sun shade for protecting individuals engaged in outdoor activities.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8171842 | Two-piece twist lock piston A piston includes a crown portion generally defining an axis and having a skirt connecting portion. The skirt connecting portion is defined, at least in part, by a first crown mating portion, a second crown mating portion positioned radially from the first crown mat... | 05/08/2012 |
| 7946216 | Two-part piston for an internal combustion engine The invention relates to a two-piece piston (1) for an internal combustion engine, comprising a piston upper piece (2) and a piston lower piece (2). A cylindrical molding (24) is arranged on the underside of the piston upper piece (2 | 05/24/2011 |
| 7093361 | Method of assembling an actuator with an internal sensor A method of installing a piston position sensor proximate to a closed end of a hydraulic cylinder is provided. The sensor is attached to the face of a piston and that piston/sensor combination is inserted into the cylinder tube to position the sensor in the desired ... | 08/22/2006 |
| 6938537 | Piston for an internal combustion engine A piston for an internal combustion engine which comprises a piston body, and a ring element, which together form a basic piston body. When the ring element is screwed onto the piston body, it forms a ring shaped cooling channel which is closed off in a direction of... | 09/06/2005 |
| 6755114 | Air pulser and devices An air pulser is provided which can intermittently form pulse air by continuously supplying compressed air. The interior of the body is partitioned into an air supply chamber and an air exhaust chamber by a diaphragm. An air blast cylinder opened and closed by the d... | 06/29/2004 |
| 5363822 | Assembly and method of using a multi-part piston with a removable head A multi-part piston assembly for an internal-combustion engine having at least one cylinder. The assembly has a skirt with a threaded member connected thereto, the skirt being adapted to fit into the cylinder for reciprocal movement, and has a removable p... | 11/15/1994 |
| 5081968 | Pistons for an internal combustion engine A piston for an internal combustion engine is described, the piston having a lower crown portion and an upper crown portion, the upper crown portion including a combustion bowl and a piston ring-groove belt of generally annular form depending from the out... | 01/21/1992 |
| 4887518 | Internal combustion engine piston with threaded ceramic piston head A piston has a piston head made of ceramics, and includes a ceramic piston head having a male rounded thread portion at the outer periphery thereof, a metal piston body having a depression in the top portion for receiving the piston head, and a female rou... | 12/19/1989 |
| 4419925 | Assembled piston for engine An engine piston composed of a head and a body separately formed from the head. The head is of ceramic material and the body is light metal or light alloy. The head and the body are connected against axial movement by interengaging means provided on the h... | 12/13/1983 |
| 4343229 | Assembled piston for engine An engine piston composed of a head and a body separately formed from the head. The head is of ceramic material and the body is light metal or light alloy. The head and the body are connected against axial movement by interengagement of inclined surfaces ... | 08/10/1982 |
