41
Theodore W Stinson: Cylindrical drum tiller attachment. Cushman Darby & Cushman, March 11, 1980: US04192387 (46 worldwide citation)

A drum attachment for conventional tillers that expands the possible uses for such tillers. A pair of drums may be detachably mounted to a tiller shaft in place of conventional tiller blades, each drum being attached to the shaft by one or more pins held by spring keeper keys passing through an inte ...


42
John R E Smith: Method and apparatus for logging inclined earth boreholes. Dresser, Robert W Mayer, March 11, 1980: US04192380 (44 worldwide citation)

Apparatus for aiding a well logging instrument in traversing highly deviated boreholes including a plurality of extensible arms mounted in the elongated logging instrument, each arm terminating in a pad member which includes a toothed wheel or gear mounted therein but extending outside the pad. When ...


43
Stephen Sichak: Deodorizing insole. Scholl, Hill Van Santen Steadman Chiara & Simpson, March 11, 1980: US04192086 (44 worldwide citation)

A laminar insole for footwear has a top, porous, non-woven, non-absorbent layer or mat of plastics material fibers, an intermediate moisture absorbing paper or other non-woven layer impregnated with deodorizing material, such as activated charcoal, coated on the paper fibers, and a bottom open-cell ...


44
Alan R Baer: Pacifier with sweets-dispensing nipple. Axel H Johnson, March 11, 1980: US04192307 (44 worldwide citation)

A pacifier for infants, having a nipple provided with a chamber, the wall of which has perforations. In use, the chamber is supplied with flavored sweets such as pellets of candy, of frozen fruit juices. When the nipple is then placed in the infant's mouth, saliva therein circulates through the perf ...


45
Albert L Micchelli, Frank A Nowak Jr, Stuart H Ganslaw: Hydrocarbon propelled aerosol hair spray compositions. National Starch and Chemical Corporation, Edwin Szala, Ellen T Dec, March 11, 1980: US04192861 (44 worldwide citation)

The solubility of hair spray resins derived from copolymers of unsaturated monocarboxylic acids and vinyl or vinylidene monomers in alcohol-hydrocarbon propellent systems is substantially increased by use of specific long chain amines as neutralizing agents therein.


46
Ogden W Vincent: Operational amplifier hybrid system. March 11, 1980: US04192978 (44 worldwide citation)

This hybrid circuit utilizes two amplifiers such as operational amplifiers without transformers. A bridge arrangement is used in which there are four impedances, the line being one impedance. One amplifier is the second amplifier which is connected across two points of the bridge as a differential a ...


47
Thomas P Scheibal: Imitation bevel edging. March 11, 1980: US04192905 (44 worldwide citation)

A strip of material of wedge-shaped cross-section adherable to the edges of a pane of glass or plastic or a mirror to produce a bevel-edge appearance. Two principal forms are shown, one formed of transparent plastic for producing the effect on windows and the like, and one formed with a metallized r ...


48
Bill L Pierce: Direct contact heat exchanger with phase change of working fluid. Westinghouse Electric, Edward L Levine, Z L Dermer, March 11, 1980: US04192144 (43 worldwide citation)

A direct contact thermal storage heat exchanger which utilizes the liquid-vapor phase change of a working fluid within the heat exchanger, and energy generation systems incorporating the heat exchanger. The heat exchanger is particularly useful in combination with a solar energy receiver. The heat e ...


49
David S Pye, Julius P Gallus, Paul W Fischer: Well completion and workover fluid having low fluid loss. Union Oil Company of California, Dean Sandford, Gerald L Floyd, March 11, 1980: US04192753 (43 worldwide citation)

A non-damaging variable-density low fluid loss well completion and workover fluid composition which is a dispersion of finely divided slowly oil-soluble, water-insoluble solid particulate matter in a thickened aqueous salt solution. The fluid composition is a mixture of an aqueous solution of a wate ...


50
Werner J Schnell: Diaphragm seal assembly. General Signal Corporation, Jeffery S Mednick, March 11, 1980: US04192192 (42 worldwide citation)

A diaphragm seal assembly for use with a fluid pressure responsive instrument includes an upper housing member having a first inner side. This inner side has a recessed surface defining a cavity and includes a passageway extending through the upper member for connection with the fluid pressure respo ...