Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7331768 | Pump with gauge A pump includes a base, a pumping set, a first joint, a gauge set, a second joint and a nozzle. The base includes a socket. The gauge set includes a gauge, a housing for receiving the gauge and a tube extending from the housing. The pumping set includes a cylinder i... | 02/19/2008 |
| 6935850 | Axially aligned dual piston cylinder air pump with a common head portion A dual-direction pump includes two cylinders arranged on opposite sides of a head portion and an inlet return-flow prevention device and a leakproof device mounted between the cylinder and the head portion for avoiding leakage at the juncture between the cylinder an... | 08/30/2005 |
| 6716006 | Telescopic dual movement pump A telescopic dual movement pump has a nozzle assembly, a central tube connected to the nozzle assembly, a first tube enclosing the central tube and slidable relative to the central tube and a second tube enclosing the first tube and slidable to the first tube. The c... | 04/06/2004 |
| 6676390 | Manual air pump incorporating a foot switch in the base member A manual air pump with a handle includes a base member, a foot switch, an outlet cylinder, an inner cylinder and a pumping assembly. The foot switch is mounted on the base member. The outlet cylinder is mounted vertically on the base member. The inner cyl... | 01/13/2004 |
| 6589027 | Double acting reciprocating motor with uni-directional fluid flow A double-acting reciprocating motor with a uni-directional fluid flow path comprises a piston disposed within a cylinder. Within the cylinder, the piston defines a first chamber between the piston and a cylinder base and a second chamber between the pisto... | 07/08/2003 |
| 6428290 | Air pump An air pump comprises an outer tube, a distribution guide tube, and a spring. The outer tube is provided in the interior with a large cylinder and a small cylinder. The distribution guide tube is disposed at the lower end of the outer tube and is provided... | 08/06/2002 |
| 6371741 | Manual air pump having at least two selectable inflation modes A manual air pump includes an outer cylinder having a first chamber and a head provided to the second end of the outer cylinder. The head includes an outlet passage communicated with the first chamber for supplying air to an object to be inflated. An inne... | 04/16/2002 |
| 6318969 | Floor air pump A floor air pump comprises an outer tube, a pressure leaking device, a pressure gauge, and an air discharge tube. The outer tube is provided with two cylinders different in size from each other. The pressure leaking device is disposed in the lower end of ... | 11/20/2001 |
| 6053709 | Pump for moving viscous fluid materials A pneumatically driven pump includes a piston threadably connected to each end of a common connecting hollow rod which is inserted over a pumped material receiving tube, with this assembly enclosed in a housing. The pistons reciprocate in response to comp... | 04/25/2000 |
| 6027319 | Compact manual air pump having selectable high volume and high pressure modes A pump comprises a pair of coaxial pistons, one slidably positioned in the other for simultaneous compression causing similarly directed air flow, independent passages and valves for permitting air flow from each piston into the pump head for increased ai... | 02/22/2000 |
| 5997256 | Dual stage, dual mode air pump The dual stage, dual mode air pump is selectively operable in a low pressure, high volume mode or a high pressure, low volume mode. It includes a pump head, an outer tube that is engaged to the pump head, an inner tube that is engaged to the pump head and... | 12/07/1999 |
| 5651666 | Deep-well fluid-extraction pump This invention features a small-enveloped (with an outside diameter of at least approximately 38 mm), single-acting, hydraulically-operated, reciprocating, deep-well, fluid-extraction pump, operable in non-straight and angular wells, and its mode of opera... | 07/29/1997 |
| 5102052 | Fluid spray device A manually operable spray pump with a double-action pump and a detachable fluid reservoir. A pump cylinder has valves at each end to admit air into one of two pump chambers formed by a piston and means to simultaneously force air from the other chamber do... | 04/07/1992 |
| 5055008 | Proportionating pump for liquid additive metering A proportioning pump for liquid additive metering having a housing with a diaphragm piston therein and inlet and outlet primary fluid lines to said housing for moving said diaphragm piston up and down. Additive pistons for pumping an additive liquid into ... | 10/08/1991 |
