Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7975717 | Pin insert A valve pin insert has a body for insertion into a valve plate and a stud integrally formed with the body and extending from one end of the body above the valve plate. The body has a lower shank at an end of the body that is opposite from the end at which the stud i... | 07/12/2011 |
| 7891374 | Suction valve A suction valve seat and guide assembly has an outer ring and a peripheral flange projecting outwardly from the bottom of the outer ring, and an inner surface with a top part sloping downwardly and inwardly toward the center of the outer ring. The outer ring has an ... | 02/22/2011 |
| 7367788 | Pump for antilock braking system in vehicle A pump including a main body having a piston provided in a portion of the main body, the piston being configured to reciprocate linearly. A piston spring may be provided within the main body and configured to bias the piston toward an end of the main body. Further, ... | 05/06/2008 |
| 7357626 | Suction valve for reciprocating compressor A suction valve for reciprocating compressor includes a fixation part, which receives a driving force of a reciprocating motor, and is fixed-combined to the front end surface of a piston performing linear reciprocal movement in the cylinder, a switching part for swi... | 04/15/2008 |
| 7351044 | Multi-stage piston type compressor In order to achieve a high level of impermeability with a low closing force for the sealing elements of a multistage piston compressor, the overflow channel (19) in the valve piston (9) opens into at least two passages (26, 27) and the sealing p... | 04/01/2008 |
| 7296591 | Valve arrangement for reciprocating machinery such as a pump and an compressor A valve arrangement for reciprocating machine, where the arrangement (1) comprises an in-valve (18) and an out-valve (19), each valve (18), (19) being a springloaded one-way valve designed to open for flow when the pressure differe... | 11/20/2007 |
| 7290560 | Valve cover locking system An apparatus and method to assemble and disassemble a valve cover locking screw assembly for a reciprocating pump module block. The module block has a bore, a removable valve cover closing the bore, and a valve cover locking ring securable to the block and surroundi... | 11/06/2007 |
| 7290559 | Check valve for a high-pressure pump of a fuel injection system for an internal combustion engine A check valve having a valve housing inserted into a receptacle in which housing a pistonlike valve member is guided longitudinally displaceably and cooperating with a valve seat on the valve housing. The valve member is urged in the closing direction by a prestress... | 11/06/2007 |
| 7195464 | Hydraulic axial piston pump A hydraulic axial piston pump comprising a cylinder block closed at sides by a head and by a containment casing for piston actuating a plate, an electric motor coupled to the plate, reversible locking means for a bypass valve inserted in a seat of the body and kinem... | 03/27/2007 |
| 7182016 | High pressure fluid cylinder system A high pressure fluid jetting system generally includes a fluid cylinder pump, a drive assembly, a pressurized liquid supply and an applicator gun. The drive assembly includes a diesel or electric powered motor which drives a rotatable drive shaft. The drive shaft d... | 02/27/2007 |
| 7104276 | Valve with reversible valve seat for high-pressure pump (HP) High-pressure valve for high-pressure pump, which has a valve body with inlet and outlet, the cylinder chamber of the pump piston rod being connected to the said valve body. The inlet communicates with the cylinder chamber via a bore which houses a first valve seat ... | 09/12/2006 |
| 6932109 | Scavenger valve assembly A poppet scavenger valve includes multiple cages for multiple poppets, permitting better control of the spacing of the assembly, facilitating maintenance and permitting better fluid flow through the cage structure. A spacer or lift plate may be positioned between th... | 08/23/2005 |
| 6880577 | Reed valve assembly The reed valve assembly of the present invention includes a reed cage, a retainer, and reed petals. The retainer is independently interlockable with the reed cage. As defined herein, independently interlockable is understood to mean that no additional parts are requ... | 04/19/2005 |
| 6866489 | Piston pump The present invention related to a piston pump, in particular for controllable brake systems such as ABS or ESP, wherein a working chamber of the pump in front of a piston is delimited by a pressure valve, and a resetting spring with its one end is supported on a va... | 03/15/2005 |
| 6805157 | Structure for fixing check valve A check-valve fixing structure includes a base body formed with a passage in which a check valve is inserted, a receiver formed in the passage, and a flange formed with a socket member of the check valve and engaged with the receiver when the check valve is inserted... | 10/19/2004 |
| 6786232 | Check valve for a piston pump A check valve for a piston pump of a traction-controlled vehicle brake system includes hollow cylindrical valve seat part and a disk-shaped valve closing body, which is embraced by a spring clip and is secured to and guided against the valve seat part. The invention... | 09/07/2004 |
| 6783337 | Check valve seal assembly A check valve assembly includes a plug having a first end and a second end spaced along a longitudinal axis of the check valve assembly. The check valve assembly also includes a first valve seat, wherein the first end of the plug sealingly contacts the first valve s... | 08/31/2004 |
| 6622751 | Pressure valve for a reciprocating pump A pressure valve, particularly for a reciprocating piston pump for conveying pressure fluid in slip-controlled hydraulic brake systems, wherein the pressure valve has a valve seat body and a valve cover body with a pre-tensioning element and a valve eleme... | 09/23/2003 |
| 6524084 | Motor pump unit A motor pump aggregate M has a housing 1 defining an oil reservoir with first and second chambers R1, R2. An electromotor 2 is driving via its motor shaft W at least one radial piston pump arrangement P1 provided within said first chamber R2. Both chamber... | 02/25/2003 |
| 6406278 | High-pressure pump with a removable on-off valve for feeding fuel to an internal combustion engine The pump has a body including at least a fuel compression chamber and an actuating chamber enclosing the actuating members of the pump; the on-off valve is defined by an independent operating assembly insertable in fluidtight manner inside a hole in the b... | 06/18/2002 |
| 6354819 | Diaphragm pump including improved drive mechanism and pump head A mechanically actuated diaphragm pump for pumping fluids includes a pump head body having an outer surface, a pumping cavity, an inlet, an outlet, and suction and discharge valves. The suction and discharge valves are externally mounted on the pump head ... | 03/12/2002 |
| 6314990 | Pressure valve for a compressor A pressure valve for a compressor, in particular a hermetically encapsulated small-size refrigerating machine, comprising the following elements: a valve plate (33), a cylinder cover (40)comprising a substantially quadrangular base plate with cylinder wal... | 11/13/2001 |
| 6224350 | Radial piston pump for high-pressure fuel delivery The invention relates to a radial piston pump for high-pressure fuel delivery in fuel injection systems of internal combustion engines. The pump includes a drive shaft that is supported in a pump housing and is embodied eccentrically or has a number of ca... | 05/01/2001 |
| 6190144 | Compressor having easily installed check valves A compressor having at least one cylinder in which is defined a compression chamber defined at the bottom by a piston movable along the cylinder, and at the top by a wall having a suction opening and an exhaust opening, each of which is connected to a res... | 02/20/2001 |
| 6019124 | Valve assembly for use with high pressure pumps The present disclosure relates generally to a valve assembly including a valve body and a poppet member for controlling flow through the valve body. The valve assembly also includes a valve seat adapted to interface with the poppet member to provide a flu... | 02/01/2000 |
| 5921273 | Delivery valve assembly for compressor A a cartridge type delivery valve assembly in which a valve seat surface and a valve are integrated in order to assure good seating characteristics in the delivery valve. The delivery valve assembly is formed by fixing together a valve holder provided wit... | 07/13/1999 |
| 5839468 | Pump valve A pump valve for use with positive displacement/reciprocating pumps. The pump valve includes an adapter, valve body, disk, spring, and retaining ring. The adapter is driven or pressed into the fluid end of the pump and includes an annular interior threade... | 11/24/1998 |
| 5709536 | Hydro mechanical packingless pump and liquid spray system A liquid pumping, handling and spraying system for liquid compositions and especially those liquid coating compositions having a suspension of metal particulate therein which tends to settle out of suspension of metal particulate therein which tends to se... | 01/20/1998 |
| 5655567 | Valve assembly for transmission A valve assembly for a transmission includes a valve cavity located in a flow passage and having first and second orifices spaced from one another and disposed at opposite ends of the cavity with sidewalls extending therebetween, a valve body disposed wit... | 08/12/1997 |
| 5649810 | Apparatus for delivering fluid to a patient A fluid delivery system is disclosed which includes a pump and a fluid delivery set. The fluid delivery set includes a stop cock valve, and the pump includes a valve actuation unit into which the stop cock valve is positioned for operation of the system. ... | 07/22/1997 |
| 5636975 | Inlet and discharge valve arrangement for a high pressure pump A high-pressure, plunger-type liquid pump including a liquid manifold that includes a plunger chamber in the form of an axial cylindrical bore portion for slidably receiving a pressurizing plunger, and that also includes a valve chamber coaxial with the p... | 06/10/1997 |
| 5605449 | Suction and discharge valve arrangement for a high pressure piston pump There is provided a fluid side of a high pressure water pump is to be used with a pump having a power side which has at least one piston and at least one stuffing box. The fluid side consists of a unitary substantially block shaped fluid end which defines... | 02/25/1997 |
| 5584671 | Apparatus for delivering fluid to a patient A fluid delivery system is disclosed which includes a pump and a fluid delivery set. The fluid delivery set includes a stop cock valve, and the pump includes a valve actuation unit into which the stop cock valve is positioned for operation of the system. ... | 12/17/1996 |
| 5411380 | High pressure homogenizing pump having removable check valve modules A homogenizer includes a homogenizing valve assembly mounted to a pump block. A set of one or more pump chambers is formed in the block and a plunger is positioned in each chamber. Each pump chamber is formed along a substantially horizontal pump axis and... | 05/02/1995 |
| 5387092 | A/C compressor with integrally molded housings An automotive A/C compressor has a novel discharge valve design that can be easily installed even though the compressor shell is made up of only two housings, each of which integrates head, cylinder bore and discharge chamber, leaving no access between th... | 02/07/1995 |
| 5348046 | Spring check valve cartridge A reversible check valve cartridge wherein a sealing disk is urged to the shutoff position by means of a cage mounted umbrella spoke-like spring which is secured to the cage and is fully recessable therein so as to permit full travel of the sealing disk w... | 09/20/1994 |
| 5287883 | Valve, in particular for compressors The riveting sleeve (6) described is used to connect the component parts (3, 4, 5, 10, 11) of compressor valves (2). The riveting sleeve (6) passes through the valve parts (3, 4, 5, 10, 11) to be connected to one another and is provided with at least one ... | 02/22/1994 |
| 5249595 | Valve, in particular for a piston-type compressor A valve for a piston-type compressor includes a valve seating with throughflow channels, a closure piece for controlling these channels, a spacer and a spring means urging the closure piece against the valve seating and supported on an arrester which at t... | 10/05/1993 |
| 5213485 | Air driven double diaphragm pump A double diaphragm pump having an air chamber housing centrally located between two water chamber housings. The air chamber housing includes a center section and two outwardly facing concave discs. Each water chamber housing includes a water chamber shell... | 05/25/1993 |
| 5171136 | Fluid flow control device A novel pressurized fluid delivery system which has a single fluid inlet block for each plunger of a pump assembly and with an individual fluid inlet manifold and an individual fluid discharge manifold coupled by a valve body assembly to the fluid cylinde... | 12/15/1992 |
