Famous Patents
In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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 |
| 6907817 | Linear actuator A linear actuator having a low profile and a long stroke is provided. The actuator includes a housing integrally connected to a telescoping piston. The piston may be extended by a fluid such as inflation gas provided by an inflation gas generator in fluid communicat... | 06/21/2005 |
| 6673455 | Flexure endurant composite elastomer compositions A flexure endurant composition of an elastomer reinforced with a continuous phase of microporous, expanded polytetrafluoroethylene (ePTFE) having a ratio of elastomer to PTFE of approximately 1:1 to 50:1 on a volume basis. The composite is prepared by a c... | 01/06/2004 |
| 6187876 | Elastomer copolyether ester composition for flexible grease The invention relates to a copolyether ester composition for products that show particularly good aging behaviour when exposed to dynamic deformation at elevated temperatures and in contact with greases. The copolyether ester composition comprises a mixtu... | 02/13/2001 |
| 6054529 | Blends of and methods of blending EVOH polymers and ethylene based polymers having improved environmental stress cracking or environmental fatigue resistance, and products therefrom A blend composition having improved environmental stress cracking resistance or environmental fatigue resistance, including an ethylene vinyl alcohol polymer and a polymer of ethylene with at least one selected from the group consisting of alpha olefin ha... | 04/25/2000 |
| 6024541 | Hydraulic axial piston pumps A hydraulic axial pump/motor comprises a plurality of revolving as well as reciprocating pistons, operatively associated with a stationary port plate. The port plate comprises at least a first, elongated, arcuate suction port and at least a second elongat... | 02/15/2000 |
| 5937732 | Actuator for converting fluid energy into a mechanical force An actuator for converting fluid energy into a mechanical force comprises an inner expansion chamber and an outer power transmission envelope which surrounds the expansion chamber and comprises a flexible but non-stretchable endless filament or multifilam... | 08/17/1999 |
| 5806899 | Flexible connection tube for automotive exhaust system A flexible connection tube for an automotive exhaust system comprises a flexible metal bellows adapted to be connected between a run of exhaust piping for absorbing expansion or contraction of the exhaust piping, and an outer knitted metal-wire braid cove... | 09/15/1998 |
| 5743166 | Bellows The invention relates to a bellows, in the bellows body of which are provided supporting frames which are welded to the outer pleats of the bellows body. The connection between the outer pleats of the bellows body and the supporting frames is formed by a ... | 04/28/1998 |
| 5601316 | Bellows for connecting hoses or apparatus for operation in a vacuum A bellows for connecting hoses or apparatus operating in a partial vacuum including a corrugated tube reinforced on the outside by rings at the troughs of the corrugations. The tube further includes toric reinforcing rings on the inside of the crests of t... | 02/11/1997 |
| 5421241 | Gas lift bellows construction and process for manufacture thereof A bellows construction is provided which defines multiple convolutions along the length thereof and having the ends of the bellows connected to respective fixed and moveable components by means of high temperature solder or weld metal. To protect the bell... | 06/06/1995 |
| 5261319 | Bellows with curved waves having points of contact The bellows comprise identical waves, having sidewalls in which the elastic deformation of the bellows is located and which have a general curved form in the same axial direction. The bellows can thus be put into a state of elastic axial contraction just ... | 11/16/1993 |
| 5261317 | Bellows with dirt collecting recesses A welded bellows is formed by welding together a stack of annular elements such that spacer rings are located between adjacent elements at the inner and outer diameters and are the locations for the welds. The spacer rings eliminate very small clearances/... | 11/16/1993 |
| 5154108 | Compact metallic bellows A compact metal bellows preferably for converting pressure changes into lar motion, has alternating inner and outer welds accomplished by a laser weld technique. An inner weld fixture is provided for deflecting a portion of the bellows away from the very... | 10/13/1992 |
| 5146016 | Filler for sensor systems of temperature-sensitive displacement pickups 2H-heptafluoropropane (HFC 227) is used as filler in sensor systems of temperature-sensitive displacement pickups.... | 09/08/1992 |
| 5073094 | Zero net external displacement implantable pump and driver A zero net external displacement implantable pump for the transfer of accumulated body fluids, such as transfer of ascites fluid from the peritoneum to the vasculative system. The pump includes a pair of bellows type displacement chambers which are altern... | 12/17/1991 |
| 5021271 | Bellows The invention relates to a bellows in which the multi-layer cover which forms the bellows body consists of at least one carrier layer, an outer layer and an inner reinforcing layer, and the layers forming the cover are surface welded together.... | 06/04/1991 |
| 4924756 | Bellows core and method and apparatus for fabrication thereof A metal bellows core is comprised of a plurality of resilient annular metal diaphragm members which are brazed together. A method for fabricating a metal bellows core is comprised of steps including brazing the metal diaphragm members together simultaneou... | 05/15/1990 |
| 4882978 | Bellows pneumatic system A pneumatic system (10) is shown in its most preferred use in a spray gun (12) to remotely control a pressure washer. The system (10) generally includes an integrally formed, homogenous squeeze box (40) including a location ear (52), a nose tube (46), a b... | 11/28/1989 |
| 4787608 | Nylon bead reinforcement ring for fluid pressure devices Air springs or other fluid pressure devices have flexible elastomeric sleeves terminating in a pair of end beads which are clamped or crimped onto a pair of spaced end members. Each of the beads is reinforced by a solid annular ring of nonreinforced therm... | 11/29/1988 |
| 4777868 | Flexible actuator A flexible actuator, comprising at least a pressure tube, which is axially extendable and/or contractable under influence of a pressure fluid. The object of the invention is to provide a flexible actuator, which can perform straight axial movements as wel... | 10/18/1988 |
| 4771676 | Hydraulic transmission device A hydraulic transmission device operable to translate hydraulic energy into mechanical energy and vice versa. The device has a housing 14 having a close end portion and an open end portion in the longitudinal direction. The housing supports therein a driv... | 09/20/1988 |
| 4745848 | Bellows The invention relates to a bellows in which the cover projects like a roof over the two arms and the apexes of the inner layer of the arms are supported on the inner layer of the cover. In this way a very robust and wear-resistant construction of the bell... | 05/24/1988 |
| 4732549 | Dosaging pump with pump bellows on bottles or the like A dosaging pump which can be placed, in particular, on bottles or the like, having a pump bellows and two valves, one of which is associated with the inlet side and the other with a nozzle. The nozzle-side valve-closure member is seated in the cover of a ... | 03/22/1988 |
| 4655690 | Bellows pump having adjustable stop cam for varying the stroke A bellows pump with the improvement of an adjustable index for uniformly controlling the amount of fluid displaced in each expansion and compression cycle.... | 04/07/1987 |
| 4531450 | Multi-stage actuator A two-stage actuator comprises a pair of axially aligned bellows molded from a thermoplastic material and connected at their adjacent ends by a molded link section integral with the bellows. The other end of one of the bellows is designed to be connected ... | 07/30/1985 |
| 4336747 | Product and method of making bellows A product and method of making a bellows from thermoplastic sheet material including forming a plurality of substantially U-shaped gussets having inside and outside edges, heat-sealing the inside edges of the gussets in pairs, heat-sealing the outside edg... | 06/29/1982 |
| 4289338 | Belt type expansion joints An elastomeric expansion belt material includes an under layer having a heat resistant or insulating fabric, or matting, such as an asbestos fabric, carried by a polymerizable elastomer vulcanized to a heat shield including one or more layers of a metal f... | 09/15/1981 |
| 3996437 | Vacuum contactor for motor control and method of making A vacuum contactor for motor control applications and method of making the same that produces a switch of minimum size and extremely long mechanical life. This method comprises the step of heating the vacuum assembly to not over 450° C during the evacuat... | 12/07/1976 |
