Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7032375 | Secondary air supply system In the disclosed secondary air supply system, an on-off valve (13) is driven by the discharge pressure of an air pump (12). A diaphragm chamber (44) is arranged in the neighborhood of a discharge outlet (54), and a part of the discharge a... | 04/25/2006 |
| 7025044 | Pump assembly and method A pump assembly includes a high-pressure pump that flows pressurized working fluid in a fuel injection system of a diesel engine. The assembly includes a pilot-operated inlet throttle valve that receives a flow of low-pressure fluid from a feed pump and controls the... | 04/11/2006 |
| 7004729 | Compressor with pot-shaped housing and housing sealing cover A compressor, in particular for air conditioning systems in motor vehicles, having a housing, a housing sealing cover, a drive shaft with bearings and a drive device for pistons that are displaced back and forth. The drive device transfers the rotational displacemen... | 02/28/2006 |
| 6974312 | Pumping element for hydraulic pump A pumping element for a hydraulic pump is provided. The pumping element includes a cylinder forming a compression chamber and having a discharge port. A piston having a pressure surface, a spill port, and a passageway connecting the pressure surface with the spill p... | 12/13/2005 |
| 6901911 | Pump and hydraulic system with low pressure priming and over pressurization avoidance features A hydraulic system, such as a fuel injection system, includes a fixed displacement pump with at least one pump piston. A sleeve surrounds each pump piston and provides the method by which fluid displaced by the pumping stroke of the pump piston is directed either to... | 06/07/2005 |
| 6764284 | Pump mount using sanitary flange clamp A metering assembly includes a motor removably coupled to a pump using a flange clamp. An annular connection flange is provided at one end of the motor housing; and a cooperating annular connection flange is provided at one end of the pump housing. The connection fl... | 07/20/2004 |
| 6662784 | Pump assembly, valve and method A pump assembly flows pressurized engine oil to HEUI fuel injectors in a diesel engine. The assembly includes an inlet throttle valve which controls the volume of oil flowed to the pump dependent upon the difference between the pump outlet pressure and a ... | 12/16/2003 |
| 6460510 | Pump assembly and method A pump assembly flows pressurized engine oil to HEUI fuel injectors in a diesel engine. The assembly includes an inlet throttle valve which controls the volume of oil flowed to the pump dependent upon the difference between the pump outlet pressure and a ... | 10/08/2002 |
| 6450778 | Pump system with high pressure restriction A pumping system for a fuel injection system includes a body defining a high pressure pumping chamber, a plunger, a high pressure outlet, a high pressure fluid line connecting the pumping chamber to the outlet, a control valve along the fluid line, and a ... | 09/17/2002 |
| 6079957 | Soft start valve A fluid pumping apparatus (10) includes a soft start valve (16) coupled with the outlet of a pump (14) driven by an electric motor (12) for reducing the startup current of the motor (12). The preferred valve (16) includes a fluid chamber (32), a valve ope... | 06/27/2000 |
| 5603609 | Variable delivery swash plate pump having a piston located spill port An axial piston pump has multiple pistons and cylinders with a spill port in each piston. A sleeve controls venting from the spill port and an inlet is provided to each cylinder, by way of a check valve from a fluid supply.... | 02/18/1997 |
| 5358389 | Two-stage compression vacuum pump having valved piston and power limiting valve This invention relates to a vacuum pump. The pump includes a pump housing (10) having upper and lower cylindrical, partly liquid filled, compression chambers (11 and 12 respectively) which are separated from each other and in which an upper and a lower pa... | 10/25/1994 |
| 5226794 | Fuel injection pump for internal combustion engines A fuel injection pump having a pump piston in a bore of a pump cylinder, wherein the pump piston is rotatable for fuel control, and having a niche disposed in the pump cylinder for receiving a control slide, wherein the niche can be made by non-cutting sh... | 07/13/1993 |
| 5046928 | Long term compressor control apparatus In a compressor control system, a subcontroller is coupled with the master-controller in order to detect, when the bypass valve is being modulated, whether there is a deviation between the minimum inlet valve position assigned to the system and the actual... | 09/10/1991 |
| 4811716 | Fuel injection pump for internal combustion engines A fuel injection pump for internal combustion engines having at least one pump element comprising a housing, a cylinder liner in the housing, a pump piston operative in the cylinder liner, a recess in the cylinder liner having a radial entrance, for a con... | 03/14/1989 |
| 4778358 | Fuel injection pump Fuel injection pump with a cam drive 3 effecting the feeding movement of a pump piston 1 which is provided with a rotating part 1,2 being rotationally connected with the pump piston 1 and a drive ring 21 for the pump drive being rotatable by about a certa... | 10/18/1988 |
| 4732546 | Adjusting device for a fuel injection pump An adjusting device for a fuel injection pump having a plug connection for connection with a control unit. In order to attain sealing off of the plug connection in the vicinity of its passageway through a cap of the housing, the plug connection is connect... | 03/22/1988 |
| 4714412 | Fuel injection pump for internal combustion engines A fuel injection pump which has a shutoff device for the fuel supply to the pump work chamber, comprising a magnetic valve, which controls an intake bore to the work chamber of the fuel injection pump. The fuel injection pump further has a relief conduit,... | 12/22/1987 |
| 4635605 | Fuel injection pump for internal combustion engines A fuel injection pump of the distributor type is proposed, in which the injection quantity is controlled by controlling the first outlet cross section D of a first relief line and the stroke-offset outlet C of a second relief line for the pump work chambe... | 01/13/1987 |
| 4630586 | Fuel injection pump for internal combustion engines A fuel injection pump is proposed for internal combustion engines having a control slide displaceable on the pump piston. The control slide cooperates with an oblique groove on a pump piston. The oblique groove is arranged to communicate via a conduit wit... | 12/23/1986 |
| 4597371 | Fuel injection apparatus for two-stroke engines The invention is directed to a fuel injection apparatus for two-stroke engines and is especially for small engines of high-speed tools such as motor-driven chain saws, for example. It provides for the valve-controlled input of fuel into a pressure chamber... | 07/01/1986 |
| 4594989 | Fuel injection pump A fuel injection pump is provided with an injection start adjustor, in accordance with which an injection adjusting piston is loaded by a pump number of revolutions-dependent fuel pressure of a feed pump against a spring force provided by two pressure spr... | 06/17/1986 |
| 4593668 | Injection rate controller for fuel injection pump An injection rate controller for a fuel injection pump comprises first and second valve ports formed in a pump housing so as to communicate with each other through a connection aperture, a spool valve movably accommodated within the first valve port and a... | 06/10/1986 |
| 4587940 | Fuel injection pump for internal combustion engines A fuel injection pump is proposed for internal combustion engines having a pump piston having a blind bore and two control bores and in which the fuel quantity to be supplied is controlled by means of a control slide having oblique control edges. At least... | 05/13/1986 |
| 4572137 | Distributor type fuel injection pump A distributor type fuel injection pump of the present invention is of the Lucas type having a rotor rotatably driven by an engine but not reciprocated. Spill ports of the same number as that of the cylinders of the engine communicating with a pump chamber... | 02/25/1986 |
| 4561398 | Injection pump regulator systems for internal combustion engines A fuel injection pump, particularly of the distributor type in which a piston is driven with reciprocating and rotary motion in order to effecting a combined action of pumping and distribution to the various cylinders of the internal combustion engine ass... | 12/31/1985 |
| 4541789 | Fuel injection pump for internal combustion engines A fuel injection pump for supplying fuel to the cylinders of the internal combustion engine comprises a housing, a cylindrical sleeve inserted in the housing and provided with a single filling opening communicated with a fuel-feeding passage, and a piston... | 09/17/1985 |
| 4537170 | Distribution type fuel injection pump In a distributor type fuel injection pump in which fuel is sucked and pressurized by a reciprocating and rotating plunger, and the pressurized fuel is fed under pressure to each fuel injection nozzle from a distribution port by means of a distribution pat... | 08/27/1985 |
| 4526145 | Fuel injection quantity adjustment apparatus for fuel injection pump A pair of solenoids are disposed coaxially with and around a hollow cylindrical cut-off valve. The valve includes an inner non-magnetic sleeve and an outer permanent magnet sleeve. The cut-off valve slidably engages a fuel distributing plunger which injec... | 07/02/1985 |
| 4499883 | Distributor type fuel-injection pump for distributing fuel to cylinders of an internal combustion engine A distributor type fuel-injection pump according to the present invention is provided with a rotor which is rotated by an engine. The rotor has a pair of plungers slidable in the radial direction of the rotor, and a fuel pumping chamber is defined between... | 02/19/1985 |
| 4470763 | Fuel injection control system An electrical motor controls the movement of a slider threaded over a threaded shaft of the motor. A sensor detects the position of the slider along the threaded shaft to control the movement of the motor which is also controlled by the operational state ... | 09/11/1984 |
| 4469069 | Fuel injection device A fuel injection device injects pressurized fuel in a combustion chamber of an internal combustion engine. The device is provided with an accumulator. The accumulator accumulates part of the pressurized fuel to be injected in the combustion chamber in acc... | 09/04/1984 |
| 4469068 | Fuel injection apparatus A fuel injection apparatus injects a high-pressure fuel to each combustion chamber of an internal combustion engine. The fuel injection apparatus is provided with an accumulator which controls an amount of injection and an injection period of the high-pre... | 09/04/1984 |
| 4461259 | Distributor type injection pump for feeding fuel to an internal combustion engine The invention relates to an injection pump of the piston-distributor type which is mobile with reciprocating and axial rotary motion, and comprises a discharge chamber. Said chamber is maintained at a pressure substantially less than the feed pressure in ... | 07/24/1984 |
| 4449504 | Distributor type fuel injection pump A distributor type fuel injection pump has an accumulator. When an internal combustion engine is in low-speed rotation or in low-load operation, the accumulator accumulates part of the fuel pressurized within a fuel compression chamber, thereby lowering t... | 05/22/1984 |
| 4445476 | RPM Governor of a fuel injection pump The invention relates to an rpm governor of a fuel injection pump for internal combustion engines, in which a positive or negative adaptation is attainable by way of a hydraulically actuated piston. The fluid pressure determining the piston position is va... | 05/01/1984 |
| 4431381 | Variable volume hydraulic pump A variable volume pump for satisfying the requirements of a hydraulic system while absorbing excess fluid volume when the full volume of fluid displacement from the pump is not required by the hydraulic system. The pump includes one or more lines of recip... | 02/14/1984 |
| 4426969 | Overspeed safety means for fuel injection pumps of internal combustion engines An overspeed safety means for fuel injection pumps of internal combustion engines in which an electrically actuatable valve is retained by an electromagnet provided in an electrical circuit in an open, retracted position which assures the normal operation... | 01/24/1984 |
| 4389167 | Pump having membrane actuated control valve to unload slave actuated inlet valve In an hydraulic system an unloader valve is disposed in a supply line between a pump and an hydraulic accumulator. The unloader valve is operative to prevent the accumulator from being overcharged and to allow the pump to re-charge the accumulator should ... | 06/21/1983 |
| 4284047 | Apparatus for controlling the air-fuel quantity ratio in internal combustion engines An apparatus for controlling the ratio of air to fuel quantity of the operational mixture to be introduced into the combustion chambers of an internal combustion engine which includes an air flow rate meter moving under differential pressure against a con... | 08/18/1981 |
