Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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 |
| 7165951 | High-pressure generating device A high-pressure fluid is continuously generated with high efficiency without causing pulsation of pressure by reciprocally moving a piston having first, second and third chamber sections under the control of an actuator including an operating pressure source and a d... | 01/23/2007 |
| 6716003 | Structure for an air pump An air pump is provided with a motor body having an air slot to allow air to flow from the air slot to air inlets positioned in a front sealing cap of the motor body. The air inlets are aligned with air holes in a closed housing. A shaft of the motor body extends in... | 04/06/2004 |
| 6652242 | Pump In the present invention, a pump includes a cylinder, a plunger for compressing air in the cylinder, a reservoir formed around the cylinder so as to define a space for storing a portion of the compressed air, a valve device installed in the cylinder for p... | 11/25/2003 |
| 6592343 | Air compression device A compact manually operated air compression device for precompressed air guns has been disclosed, wherein two operating levers, positioned on opposite sides of a cylinder, are connected to a piston rod by means of connecting links. Lightweight connection ... | 07/15/2003 |
| 6308528 | Fluid delivery apparatus and method A fluid delivery apparatus provides for controlled delivery of fluids into a fluid system. The fluid delivery apparatus can allow a defined volume of fluid to be delivered to the fluid system cleanly, minimizing fluid waste and spillage. The fluid deliver... | 10/30/2001 |
| 5782621 | Manual pump with inherent vacuum limit A vacuum pump useful in penile erection systems is provided. The vacuum pump comprises a piston in a cylinder with intake and exhaust valves. The vacuum producing outstroke is powered by a spring having sufficient force to draw a vacuum no higher than the... | 07/21/1998 |
| 5363666 | Manually operated refrigerant recovery device A manually operated refrigerant recovery device is disclosed that includes a piston/cylinder pump combination, wherein the piston defines opposing fluid chambers in the cylinder. A handle is attached via a connecting rod to the piston. First and second on... | 11/15/1994 |
| 5363665 | Hand pump for evacuating and charging a refrigerating system A device for evacuating and charging refrigerant in a refrigerant circuit (64) includes a hand pump to evacuate the circuit. The pump has a pump cylinder (10), in which a pump piston (12) is movable to and fro by a piston rod (16) which has a pump handle ... | 11/15/1994 |
| 5336065 | Manually operated refrigerant recovery device A manually operated refrigerant recovery device is disclosed that includes a piston/cylinder pump combination, wherein the piston defines opposing fluid chambers in the cylinder. A handle is attached via a connecting rod to the piston. First and second on... | 08/09/1994 |
| 5222553 | Water well pump A manually operable water well pump includes a baseplate with a casing thereon, a rocker arm pivotally mounted in the casing for reciprocating movement therein, a chain on one end of the rocker arm outside the casing for reciprocating vertical movement wi... | 06/29/1993 |
| 5217354 | Hand-held vacuum and pressure pump with improved handle The device of the present application, a hand held vacuum and pressure pump having an improved handle, provides a hand held pump with a handle suitable to be used by a person with a smaller hand without significant loss of stroke length or leverage. The h... | 06/08/1993 |
| 4222501 | Dual chamber, continuous action dispenser A trigger operated dispenser includes a plurality of expansible chambers, with one of the chambers comprising a pumping chamber connected to be operated by the trigger, and another chamber connected to receive product from the pumping chamber and operativ... | 09/16/1980 |
| 4191313 | Trigger operated dispenser with means for obtaining continuous or intermittent discharge A trigger operated dispenser includes a plurality of chambers with movable members therein, and operable to draw material from a container, pressurize it, accumulate a quantity of material under pressure, and discharge the material to a point of use. An a... | 03/04/1980 |
| 4187845 | Apparatus for feeding anesthetic and/or life sustaining gases during a surgical procedure A mechanically operable bellows for feeding anesthetic and/or life sustaining gases to a patient during a surgical procedure.... | 02/12/1980 |
| 3967762 | Pump for dispensing liquid from a container in a generally continuous manner A finger operable pump for dispensing liquid from a container in a generally continuous manner includes a pump housing having an inner pump body and an outer sealing element. The inner pump body has a liquid receiving chamber, divided into primary and sec... | 07/06/1976 |
