Kenneth Simpson: Toggle switch with shaped wire spring contact. C & K Components, Weingarten Maxham & Schurgin, June 9, 1981: US04272662 (245 worldwide citation)

A sub-miniature switch having a pre-shaped wire spring contact movable to one of a plurality of operating positions. The pre-shaped wire spring contact performs the biasing and the detenting functions in addition to the contact function in the switch. Either a toggle, pushbutton or slide may be used ...

Thomas J Fogarty, Albert K Chin: Dilation catheter method and apparatus. Thomas J Fogarty, Naylor Neal & Uilkema, June 9, 1981: US04271839 (232 worldwide citation)

A balloon catheter wherein the balloon is inverted within the distal end of the catheter for eversion therefrom and extrusion through a partially occluded blood vessel in response to the exertion of internal fluid pressure on the balloon. The catheter is designed to extrude through the occluded vess ...

Jerome F Moshofsky: Internal surgical stapler. Lawrence M Smith, G Marts Acker, Franklin G Smith, Klarquist Sparkman Campbell Leigh Whinston & Dellett, June 9, 1981: US04272002 (206 worldwide citation)

The specification discloses an improved multiple suture stapler in which two rows of staples are pushed by a comb-like ram out of a magazine of a frame and are clinched by an anvil releasably latched to the frame. The frame is of one-piece plastic construction and includes a pair of handles hinged t ...

Martin B Barke, Rebecca A Luebke: Stable protective seed coating. Cargill Incorporated, Fitch Even Tabin Flannery & Welsh, June 9, 1981: US04272417 (203 worldwide citation)

A stable, liquid seed coating composition is provided, including a binding agent, an active ingredient and a coloring agent in a liquid medium including water and a polyol.

Marion F Rudy: Shoes with studded soles. Robert C Bogert, Subkow and Kriegel, June 9, 1981: US04271606 (173 worldwide citation)

Shoes incorporating a multiple chambered sole member inflated to a pressure above atmospheric, and disposed above and adjacent to an outsole having a deflectable web and projecting elements, such as ground-engaging studs, depending from the web and disposed in spaced geometric relation to each other ...

John R Harbour, Michael L Hair: Electrophoretic display device. Xerox Corporation, June 9, 1981: US04272596 (149 worldwide citation)

An electrophoretic display device which provides high contrast images and a stable suspending fluid is described. A white marking material such as titanium dioxide is suspended in a colloidal dispersion containing black colorant such as colloidal size iron oxide particles known as ferrofluids. Image ...

Philip C S Crosby, Philip A Barrios, Ronald R Perry: Flexible wiring system and components therefor. Harvey Hubbell Incorporated, June 9, 1981: US04272689 (144 worldwide citation)

A modular, branch circuit electrical power distribution system and components therefore, of the flexible wiring type. Lighting fixtures and devices are wired to connectors which employ contact assemblies comprising an integral combination of a male contact, a female contact, interconnecting bussbar ...

Jean P Angelchik: Method for prevention of gastro esophageal reflux. Drummond and Nelson, June 9, 1981: US04271827 (140 worldwide citation)

A method for preventing gastro esophageal reflux when the gastro esophageal junction is positioned above the diaphragm. The method comprises positioning a generally C-shaped cushion prosthesis about the distal esophagus, adjusting the free ends of the prosthesis at a spacing to permit normal expansi ...

Howard Jaffe: Microencapsulation process. The United States of America represented by the Secretary of Agriculture, M Howard Silverstein, William E Scott, David G McConnell, June 9, 1981: US04272398 (137 worldwide citation)

Pesticides, insect growth regulators and other substances are encapsulated by dissolving the substance to be encapsulated and a biodegradable polymer in a suitable organic solvent, dispersing the solution in an aqueous medium and stirring until the solvent evaporates to form a matrix of the substanc ...

Ernest R Earnest: Turbine engine with exhaust gas recirculation. Hydragon Corporation, Harness Dickey & Pierce, June 9, 1981: US04271664 (132 worldwide citation)

A method and apparatus for improving the efficiency of an integrated combined cycle Brayton-Rankine engine is disclosed. The engine has a main power turbine operating on an open-loop Brayton cycle. Its air supply is furnished by a compressor independently driven by the turbine of a closed-loop Ranki ...