61
Lindqvist Karl: Locking device. Klarquist Sparkman Campbell Leigh Hall & Whinston, December 30, 1975: US3929300 (31 worldwide citation)

A locking device for the rotatable shaft of a reel type safety belt includes a plate mounted on a rectangular portion of the shaft and having a trapezoidal central hole in which the shorter of the parallel sides is slightly longer than the short side of the rectangular shaft portion and the height o ...


62
Miles Thomas R: Apparatus for cutting lumber to specified clear lengths. Edward Hines Lumber Co, Klarquist Sparkman Campbell Leigh Hall & Whinston, May 21, 1974: US3811353 (31 worldwide citation)

A piece of lumber is fed flat to the infeed end of a marking station, tilted on edge and driven endwise into the marking station where defects in the piece are detected and marked with a retroreflective material. The marked piece moves to a defect-cutting station where it is driven endwise past a pa ...


63
Feyerherm Raymond M: Portable bath lift. Klarquist Sparkman Campbell Leigh Hall & Whinston, November 11, 1975: US3918108 (30 worldwide citation)

A bath lift for assisting invalid persons into and out of a bathtub employs a portable hydraulic jack clamped to a rim portion of the bathtub and supported on a floor surface by a nonslip base. An open center seat is attached to the extensible portion of the jack by a suspension member. A leg suppor ...


64
Frederick D Helversen, Morris R Rivers: Rotary through dryer having multiple vacuum chambers and associated heaters. Frederick D Helversen, Klarquist Sparkman Campbell Leigh Hall & Whinston, February 21, 1978: US04074441 (30 worldwide citation)

A fiber sheet manufacturing apparatus, such as a paper machine, is described, including a rotary through dryer for drying the sheet material on the same foraminous conveyor where it is initially formed. The dryer is provided with a plurality of separate vacuum chambers circumferentially spaced withi ...


65
Ray A Walker, Fred R Reich, James T Russell: Optical extensometer. Batelle Memorial Institute, Klarquist Sparkman Campbell Leigh Hall & Whinston, December 12, 1978: US04129384 (30 worldwide citation)

An optical extensometer is described using sequentially pulsed light beams for measuring the dimensions of objects by detecting two opposite edges of the object without contacting the object. The light beams may be of different distinguishable light characteristics, such as polarization or wave leng ...


66
James R Hermann, Gary S Amerman: Fishermans pliers. Klarquist Sparkman Campbell Leigh Hall & Whinston, June 24, 1980: US04208749 (29 worldwide citation)

A fisherman's pliers combines in a single tool the gripping, holding, compressing and flattening features of a needlenose or similar pliers with a hole punch and with both straight edge and half-moon metal cutters, whereby hollow and solid so-called "pencil lead" sinker material can be prepared effi ...


67
Walker Charles W E: Microwave window and antenna apparatus for moisture measurement of fluidized material. Klarquist Sparkman Campbell Leigh Hall & Whinston, June 18, 1974: US3818333 (29 worldwide citation)

A microwave window and antenna apparatus is described for measuring the moisture content of 'fluidized' material including particulate material, such as sand, or liquid material, such as oil. The container for the fluidized material is provided with a pair of microwave windows which project into the ...


68
Larry F Kopp: Animal feed bowls. Klarquist Sparkman Campbell Leigh Hall & Whinston, June 2, 1981: US04270490 (29 worldwide citation)

A pair of animal feed bowls, one of which is for additionally acting as a cover for the other feed bowl is disclosed. Cooperating apparatus is provided on the two bowls for releasably securing one in an inverted position as a cover over the other. In one embodiment, a flexible peripheral side wall o ...


69
Roger W Sackett, Thomas R Liethen: Truck or truck tractor windshield air ram arrangement. Freightliner Corporation, Klarquist Sparkman Campbell Leigh Hall & Whinston, November 25, 1980: US04235298 (29 worldwide citation)

A truck or truck tractor having an opening between the base of its windshield and the rear end of its hood. Air pressure in this area drives air through a moisture tray and a collector trap to a conduit to an air cleaner leading to a turbocharger. Rain, snow and/or ice in the air is removed into the ...


70
Anderson Sherman D: Metal detecting apparatus having improved ground-effect immunity. Klarquist Sparkman Campbell Leigh Hall & Whinston, July 9, 1974: US3823365 (29 worldwide citation)

A BFO metal detector includes a support for carrying a search coil and plural compensating coils which prevent ground effects from changing the beat frequency output. The search coil forms part of a tuned circuit of a first oscillator while plural compensating coils form part of a tuned circuit of a ...