Quotables
"I hate what they've done to my child...I would never let my own children watch it. "
Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.
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 |
| 7261153 | Packer cups A packer cup for use in sealing the interior of a pipe under pressure is described. The cup uses a bell-shaped end which has a lip of softer material which is integral with the body of the cup which is harder material. Under pressure the lip expands against the side... | 08/28/2007 |
| 7213611 | Valve assembly A valve assembly includes a body having a bore and a valve received within the bore for movement between an open position and a closed position. First and second sealing members are secured for movement with the valve and are positioned between the valve and the bod... | 05/08/2007 |
| 7198275 | Sealing and replenishment gasket The annular sealing cup with axis Δ, a so-called replenishment cup, which is intended to be positioned between a hydraulic cylinder and piston and which has a axial section and has application to braking circuits comprises: ... | 04/03/2007 |
| 7178806 | Cinchpac self-loading rotary shaft seal A seal for a conveyor drive which has an elastomer which is compressed between a cap ring and a housing. ... | 02/20/2007 |
| 7134671 | Lip seal having increased contact force at interface and apparatus incorporating the same A seal having a body portion, at least one lip portion extending from the body portion, and a protrusion formed on the at least one lip portion. The lip portion and protrusion formed thereon may each include an arcuate segment wherein the arcuate segment of the prot... | 11/14/2006 |
| 7131454 | Piston sealing mechanism for liquid additive injection pump A system for injecting a predetermined amount of a secondary fluid into a primary fluid stream uses a liquid additive injection pump driven by a fluid powered motor driven by the primary fluid stream. The liquid additive pump has a reciprocating piston movable withi... | 11/07/2006 |
| 6786489 | Sealing insert, especially for a piston in the hydraulic braking system of a motor vehicle The present invention discloses a sealing insert, in particular for a piston in a hydraulic brake system, comprising a central valve arranged in a cavity, a supporting body and a rubber-elastic sealing body that is adhesively connected to said supporting body. The s... | 09/07/2004 |
| 6505838 | Pressure regulator utilizing pliable piston seal A pressure regulator uses a pliable seal to segregate a pressure confinement volume from the remaining cylinder volume. The pliable seal has a cross section comprising a pair of apexes that are disposed into grooves incorporated into the piston and the cy... | 01/14/2003 |
| 6347689 | Roll back seal for disc brake A roll back seal is provided for a disc brake assembly that reliably returns a piston to a release position from a braking position with an extended sealing life. The disc brake assembly includes a caliper housing with at least one piston receiving openin... | 02/19/2002 |
| 6318526 | Compliant rod guide and seal assembly A compliant rod guide and seal assembly for use in a damper includes an annular outer casing having a through hole and a support ring received in the outer casing. The support ring has an outer radius that is less than the inner radius of the outer casing... | 11/20/2001 |
| 6273430 | Oil seal An oil seal or fluid seal for providing a seal between a cylinder and a piston rod is provided. The oil seal has an annular seal lip which has on a conical inner circumferential surface thereof a plurality of annular projections which are arranged axially... | 08/14/2001 |
| 6267383 | V-shaped seal with anti-extrusion section A sealing-device having a body section and an anti-extrusion section is shown, the body section being disposed on top of the anti-extrusion section. The body section includes sealing surfaces for enclosures in which the sealing device is located. the anti... | 07/31/2001 |
| 6244409 | Slave cylinder for a centered clutch release system A hydraulically operated central release unit for a motor vehicle clutch is designed as a slave cylinder that is arranged inside a clutch housing. The central release unit includes a housing in which a ring piston is movably guided. The ring piston has a ... | 06/12/2001 |
| 6196552 | Seal assembly for annular hydraulic cylinder A seal assembly especially suitable for use as the sealing element in the annular cylindrical bore of a concentric cylinder assembly. The seal assembly includes an annular insert structure of rigid material and an annular seal member of elastomeric materi... | 03/06/2001 |
| 6164659 | Piston rod seal A piston rod seal includes a sealing disk provided with a reinforcement element, a guide mechanism, and a support piece which are adapted to be placed consecutively in a metal pipe or similar object functioning as a housing, and which are adapted to surro... | 12/26/2000 |
| 6142480 | Resilient type sealing member for sealing a push rod member of a railway type vehicle brake cylinder An improved resilient type sealing member for use at least in an application which requires both sealing of an annular space between an inner surface of a first member and an adjacent outer surface of a second member at least partially disposed for recipr... | 11/07/2000 |
| 6092637 | Clutch with a sealing element, in particular an elastomer seal for use in annular cylinders such as in clutches A seal element, in particular an elastomer gasket for use in hydraulic annular cylinders, such as in clutches, with a radially outer and a radially inner seal lip, characterized by the fact that the seal lips are axially offset in relation to one another.... | 07/25/2000 |
| 5996472 | Cryogenic reciprocating pump A novel reciprocating pump for cryogenic fluids. The pump has a cylinder sleeve, head, intake valve, discharge valve, and a reciprocating piston including a mechanical spring energized seal having a generally U-shaped jacket and a helical spring in the bi... | 12/07/1999 |
| 5988340 | Two components of a cylinder for a hydraulically operated friction clutch assembly having scored running surface for minimizing noise This invention relates to a seal between two components which two components can move relative to one another. The seal can be used in particular for hydraulic, pneumatic or hydropneumatic systems, whereby at least one elastic seal element interacts with ... | 11/23/1999 |
| 5531151 | Rodless cylinder A rodless cylinder which is capable of minimizing the leak of pressure fluid from a cylinder tube. A slit of an almost trapezoidal section is formed in the cylinder tube in a longitudinal direction thereof, a trapezoidal belt which is fixed to the ends of... | 07/02/1996 |
| 5480163 | Lip seal with reinforced backup A replaceable sealing member is disclosed which includes a body, lip seal and bonded reinforcement section having a skirt portion and a lip support surface. The skirt portion and lip support restrict elastomeric flow of the body and lip seal portion of th... | 01/02/1996 |
| 5332303 | Anti-lock-controlled brake system An anti-lock-controlled hydraulic brake system is described having a pump (9) and a master brake cylinder (1). An arrangement for controlling the pump pressure is integrated in the master brake cylinder ( 1 ) and consists of the combination of a connectio... | 07/26/1994 |
| 5287951 | Hydraulically actuable releaser for a motor vehicle friction clutch The invention relates to a hydraulically actuable releaser with an annular piston. The supporting ring co-operating with the annular piston and the groove sealing ring co-operating with the supporting ring have, at least in their radially outer region fac... | 02/22/1994 |
| 5248069 | Viscous fluid pressurizing apparatus Apparatus for pressurizing a paste for dispensing the paste includes a vessel, a follower plate and a resilient seal which is movable through the vessel with the follower plate. The resiliency of the seal provides pressure for developing a seal between th... | 09/28/1993 |
| 5211099 | Slave cylinder for a hydraulic actuating system of a motor vehicle friction clutch A slave cylinder of the annular cylinder type is proposed, whereof the annular piston (45) able to slide axially between an outer cylinder wall (29) and an inner cylinder wall (33) is sealed by a grooved sealing ring (53) with respect to the pressure cham... | 05/18/1993 |
| 5088385 | Actuator apparatus with secondary seal motion An actuator having a plurality of concentric cylinders with the inner and outer cylinders being adapted to connect to apparatus which must move relative to one another. Flexible sealing rings are positioned between adjacent cylinders and when the pressure... | 02/18/1992 |
| 5022312 | Plastic piston head assembly A piston having a cup seal retainer assembly wherein the cup seal is secured between an underside of a circumferential flange of the piston and a retainer ring that is secured to the underside of the piston.... | 06/11/1991 |
| 4924759 | Press-fit retaining ring with extrusion-holding chamfer for wobble-piston cup seal A wobble piston apparatus incorporates a cup-type seal seated on a land formed about the head of the piston, and secured by an annular ring. The head of the piston and the ring have chamfered edges which facilitate an engagement of the ring with the pisto... | 05/15/1990 |
| 4781483 | Device for exposing a mass stored in a container The invention relates to a device (1) for exposing a mass (3) stored in a container (2). Disposed in container (2) is a conventional follower piston (5), the dispensing opening (4) of container (2) being closed by a removable closure cap (11). For generat... | 11/01/1988 |
| 4638726 | Load bearing swab cup An improved reinforcement cage assembly for use in the manufacture of a load lifting swab cup wherein the swab cup includes an elastomeric material bonded to the reinforcement cage assembly. The reinforcement cage assembly includes a metal base assembly a... | 01/27/1987 |
| 4528896 | Dynamic seals for gas and oil well swabs Gas and oil well swabs, particularly a dynamic seal for maintaining gas-tight contact between the moving swab and the well casing. The seal includes a reinforcing tube and a flexible annulus having an upper throat portion complementally engaging the exter... | 07/16/1985 |
| 4373427 | Fluid pressure cylinder A fluid power cylinder having a cylinder with an elongated slot extending generally parallel to the longitudinal axis of the cylinder, a reciprocally movable piston and a strip sealing means for successively sealing the slot during movement of the piston.... | 02/15/1983 |
| 4345771 | Sealing cup for hydraulic piston-cylinder device In a sealing or piston cup for maintaining lubricating oil on a sealing surface, the sealing surface thereof is formed with a circumferentially extending angular recess or groove which functions to retain lubricating oil. The sealing cup with the recess c... | 08/24/1982 |
| 4329916 | Packer nose assembly A packer nose assembly for pumping downhole equipment of the free type into and out of a tubing string located within a borehole. The assembly includes a mandrel having a lower end portion attachable to the downhole equipment and an upper end portion term... | 05/18/1982 |
| 4317408 | Wear resistant pump packing cup A packing is provided with a multilayered construction and a cup-like shape. The packing is configured to be carried in a packing holder for reciprocating motion within a pump cylinder. Some of the layers in the packing terminate on the convex face of the... | 03/02/1982 |
| 4189160 | Sealing cup A sealing cup to be used for a hydraulic piston-cylinder device the cup having an outer lip with a leading edge adapted to slide along a wall when fitted in the device. The angle of the leading edge with respect to the cylinder axis is made smalle... | 02/19/1980 |
| 4178000 | Sealing provided between the walls of a cooled continuous mould and the head of a starter bar In a continuous casting plant the space between the walls of a cooled continuous casting mould and the head of a starter bar is sealed. The seal is achieved by means of an elastic member inserted in an annular peripheral recess of the starter bar head. Th... | 12/11/1979 |
| 4165084 | Reciprocating pump packing A packing for a reciprocating pump comprises a resilient body of elastomeric material with a cup-like shape and includes a plurality of flat cantilevered spring members embedded within the annular wall of the body. The spring members provide support for t... | 08/21/1979 |
| 4130217 | Seal arrangement for floating roof storage tanks A seal arrangement for a floating roof in a storage tank, wherein the roof is spaced at its outer periphery from the inner surface of the tank, thus defining a rim space, includes support members secured at one edge to the roof and extending angularly out... | 12/19/1978 |
| 4116452 | Sleeve seal for master cylinders of hydraulic brake systems A sleeve seal for sealing a front end of a piston and a cylinder wall wherein the front surface of the sleeve seal remote from the front end of the piston is provided with circular coaxial undulations.... | 09/26/1978 |
