51
Smith William Paul, Matsuyama Glen: Pillow box blank. Graphic Arts Packaging Corporation, Jessup & Beecher, December 30, 1975: US3929222 (44 worldwide citation)

A one-piece blank is provided which may be composed of paperboard, or other suitable material, and which is used to form a pillow-pack type of carton. The carton has a generally ellipsoidal shape with reinforced end walls, and it has a pair of cover flaps which extend over the elliptical edges of th ...


52
Keller Michael I: Impact sensing detector. Bernstein Howard L, December 30, 1975: US3930248 (44 worldwide citation)

An impact sensing detector for monitoring the operation of metal forming impact presses. The detector operates on an analog electric signal corresponding to the shock wave produced as the press ram impacts the fixed press platen and workpiece to produce a plurality of samples of the amplitude of sai ...


53
Kittl Emil: Solar radiation conversion system. The United States of America represented by the Secretary of the Army, Edelberg Nathan, Gibson Robert P, Gordon Roy E, December 30, 1975: US3929510 (44 worldwide citation)

A system for converting solar radiation into useful electrical energy is vided. The system includes a silicon cell and solar radiation conversion means integral with or spaced from the silicon cell. The solar radiation conversion means is characterized by a band-emission spectrum that provides a goo ...


54
Bates Harry E: High speed optical wavelength detection system. Renfro Julian C, December 30, 1975: US3929398 (44 worldwide citation)

Light whose wavelength is to be measured is applied to a device utilizing a light processing means which serves to transmit light to a detector array in a manner determined by its wavelength. The coded output of the detector array can thus immediately indicate the wavelength of the incoming light. I ...


55
Higuchi Takeru: Osmotic dispenser. Alza Corporation, Bacon & Thomas, December 30, 1975: US3929132 (43 worldwide citation)

An osmotic dispenser is described which is capable of releasing to its outside environment concentrations of active agent at an osmotically controlled rate over a prolonged period of time, and the active agent content of which dispenser is formulated in a form other than wholly in solution, namely, ...


56
Bykhovsky David Grigorievich, Medvedev Alexandr Yakovlevich, Rossomakho Yakov Vulfovich, Butova Margarita Nikolaevna: Nonconsumable electrode for oxygen arc working. Holman & Stern, December 30, 1975: US3930139 (43 worldwide citation)

A nonconsumable electrode for oxygen arc working, comprising a holder produced from copper or alloys thereof and an active insert fastened to the end face of the holder and which is in thermal and electrical contact with said holder through a metal distance piece disposed between the active insert a ...


57
Gonser Donald I: Sonic warning for electrosurgical device. Dentsply Research & Development Corporation, Pearce James W, Schaeperklaus Roy F, December 30, 1975: US3929137 (42 worldwide citation)

An electrosurgical device in which high frequency electrical energy powers a cutting electrode. Radio frequency energy is set up in a driver coil and a driven coil mounted in a handpiece. The driver coil energizes the driven coil to energize a surgical electrode connected to one end of the driven co ...


58
Olson Lorin P: Document transport and registration apparatus. Addressograph Multigraph Corporation, Fleck Jr Harry M, December 30, 1975: US3929327 (42 worldwide citation)

A document transport and registration apparatus is provided comprising an idler roller and a frusto-conical drive roller which cooperate in pinching engagement to advance a document along a predetermined path. The drive roller is of flexible, resilient material which is deformed radially when advanc ...


59
King John M, Bakker Nicolaas: Extreme pressure agent and its preparation. Chevron Research Company, Magdeburger G F, Tonkin C J, December 30, 1975: US3929650 (42 worldwide citation)

A particulate dispersion of an alkali metal borate is prepared by contacting boric acid with an alkali metal carbonate overbased metal sulfonate within an oleophilic liquid reaction medium.


60
Garretson Owen L: Float shut off valve for liquefied petroleum gas tank fillers. Larson Taylor & Hinds, December 30, 1975: US3929155 (41 worldwide citation)

A float valve assembly to be attached to a standard liquefied petroleum gas tank filler assembly and inserted into the interior of the tank at a predetermined distance whereby the foat closes a small valve located within the assembly when the liquid level in the tank reaches a desired point and the ...