41
Thompson Robert E: Dispensing system. Shering Corporation, November 23, 1971: US3622049 (40 worldwide citation)

A dispenser for dispensing foamable formulations. The liquid is placed in the container portion and exits through a nozzle in the form of a foam. When the walls of the container are squeezed, or when a pressurized gas is introduced, air within it and also the liquid is forced upwardly through a poro ...


42
Sara Raymond V: Tin-carbon fiber composites. Union Carbide Corporation, November 23, 1971: US3622283 (40 worldwide citation)

Low-density, high-strength tin base composites are provided by coating carbon fibers with a metallic coupling agent and then bonding them together, preferably in a parallel or aligned manner, by means of a tin or tin base alloy matrix. Such composites are characterized by physical properties which a ...


43
Dutchak David D: System of electricity generation for motor-driven vehicles. November 23, 1971: US3621930 (39 worldwide citation)

A system of electricity generation for electric motor-driven vehicles consisting of a wind tunnel mounted on an equipped vehicle having open forward and rearward air intake and discharge ends, respectively, the forward open end being flared outwardly constituting an airscoop; plus a Venturi within t ...


44
Lehrer Stanley, Robertson Raymond A, Holme John C: Electronic locking system. Electro Optics Devices Corporation, November 23, 1971: US3622991 (39 worldwide citation)

A door lock is opened by a binary-coded key card when inserted in an opening adjacent the lock. The binary access code for the lock is electronically changed for each new registrant to a particular room in a hotel or motel. The lock system includes a central control station and a plurality of substa ...


45
Bradshaw Noel James, Taylor Kenneth William: Sausage preparation process. Lever Brothers Company, November 23, 1971: US3622353 (39 worldwide citation)

Collagen-coated food products, particularly sausages, are prepared by extruding the collagen in tubular form upon the foodstuff and then setting it, one or both surfaces of the collagen being subjected during extrusion to frictional forces acting about the axis of extrusion. Such forces are convenie ...


46
Davey Norman, Loasby Geoffrey Roger: Microelectronic circuits and processes for making them. National Research Development Corporation, November 23, 1971: US3622384 (38 worldwide citation)

In a process for making a multilayer microelectronic circuit by successive screen-printing operations, at least one layer of the circuit is formed by screen printing a first conductor pattern of conductor material and a first insulating pattern of insulating material, the insulating pattern being su ...


47
Leffert Charles B: Control system for heat pipes. General Motors Corporation, November 23, 1971: US3621906 (38 worldwide citation)

In preferred form, a heat pipe joining a heat source and a heat sink through an evacuated control section. A reservoir is located in direct fluid communication with the evacuated control section and has a predetermined quantity of control fluid therein. A heat-pipe wick within the control section ha ...


48
Golay Marcel J E: Homogenizing coils for nmr apparatus. November 23, 1971: US3622869 (38 worldwide citation)

A nuclear magnetic resonance apparatus adapted for homogenizing a field includes electrically insulated electroconductors positioned on pairs of plates and arranged for generating an incremental magnetic field in the vicinity of the sample and in the direction of the main field. The incremental fiel ...


49
Hsiao Mu Yue, Kolankowsky Eugene: Optimum apparatus and method for check bit generation and error detection, location and correction. International Business Machines Corporation, November 23, 1971: US3623155 (37 worldwide citation)

Errors in code words transmitted over a communication path are detected and corrected by optimum apparatus at transmitting and receiving ends of the path. Illustratively, a 72 bit parallel code word, comprising a 64 bit information portion and an eight bit check portion is communicated between a tra ...


50
Oberthur Heinrich, Depenheuer Otto: Brake system for electrically operated vehicles. International Telephone and Telegraph Corporation, November 23, 1971: US3621929 (37 worldwide citation)

A braking and driving system for electrically operated vehicles including an electric motor for driving the vehicle which may be operated as a generator to provide additional braking and recovery of braking energy by charging the battery. Hydraulic braking on the drive axle is delayed until the maxi ...