31
Nakamura Zenzo, Uchiyama Takashi, Taguchi Tetsuya, Mashimo Yukio: Flash unit for use with camera. Canon Kabushiki Kaisha, Flynn & Frishauf, November 5, 1974: US3846811 (49 worldwide citation)

A flash unit for use with a camera includes a DC power supply and a flash lamp or lamps between which a constant current circuit is inserted to maintain the intensity of flash of light produced by the flash lamp or lamps at a constant level for a predetermined time duration. A Darlington circuit hav ...


32
Berkman Samuel, Roundtree Jr Ural: Vapor deposition apparatus with pyrolytic graphite heat shield. RCA Corporation, Spechler Arthur I, November 5, 1974: US3845738 (48 worldwide citation)

A heat shield of pyrolytic graphite is deposited around the peripheries of silicon wafers in chemical-vapor-deposition apparatus of the type wherein the wafers are heated and epitaxial layers of silicon are deposited upon the surfaces of the heated wafers. The wafers and the heat shield are disposed ...


33
Herr Robert W, Sigl Edward D, Aksamit Marion W: Thermal printer. Bowmar Instrument Corporation, November 5, 1974: US3845850 (47 worldwide citation)

A thermal printer which may be used to provide a hard copy readout for an electronic device such as a calculator, cash register, computer or the like. The thermal printer includes a printing head having a thermal printing matrix thereon, the printing head being mounted on a carriage which is slidabl ...


34
Schulin Gotthilf: Portable implement, especially motor chain saw. Andreas Stihl Maschinenfabrik, Becker Walter, November 5, 1974: US3845827 (47 worldwide citation)

A portable tool, especially motor chain saw, which has its handle means through the intervention of spring elastic connecting means connected to the tool, and in which the handle means has at least one compensator connected thereto in such a way that the latter is adapted to oscillate relative to th ...


35
Sharp Ellis Alvin, Dolan Courtney F: Full time slip controlled four wheel drive. Chrysler Corporation, Talburtt & Baldwin, November 5, 1974: US3845671 (46 worldwide citation)

Four wheel drive train including a transfer case adapted to provide full time four wheel drive. A differential is provided in the transfer case which is electronically controlled to be locked up to prevent differentiation when the slip between the input and output shafts exceed a predetermined toler ...


36
Boden Ogden W: Cord locking assembly. Green William P, November 5, 1974: US3845575 (45 worldwide citation)

An assembly including two cords or cord ends which pass through and are adjustably retained by a cord locking device, and have ends beyond said device which are held by the device in the form of two loops. The device has laterally extending grooves formed at one end thereof and through which the two ...


37
Bohn Gerhard, Winkle Gunther, Wende Helmut: Magnetic-levitation vehicle with auxiliary magnetic support at track-branch locations. Krauss Maffei Aktiengesellschaft, Ross Karl F, Dubno Herbert, November 5, 1974: US3845720 (44 worldwide citation)

A magnetic-levitation or magnetic-suspension vehicle in which a pair of electromagnetic-suspension arrangements are spaced apart on the vehicle body and describe traces or paths which intersect at branching locations of the track, is formed with auxiliary magnet means, e.g. an electrodynamic system, ...


38
Zoller Henry: Cup-shaped device for the collection of menstrual fluids and intended for internal use. Molnlycke, Young & Thompson, November 5, 1974: US3845766 (43 worldwide citation)

This invention concerns a menstrual device for internal use consisting of a liquid-proof, soft and elastomeric material. The device is generally cup-shaped and has on its outside annular ribs extending peripherally around the wall of the cup, the ribs having for its purpose to sealingly abut the wal ...


39
Nichols Larry D: Process of preparing gelled cellulose triacetate products and the products produced thereby. Moleculon Research Corporation, Crowley Richard P, November 5, 1974: US3846404 (43 worldwide citation)

Unique gelled cellulose triacetate products, for example, in film or fiber form, prepared by: providing a solution of cellulose triacetate in an acidic nonhydrolyzing solvent; forming the solution into a desired product, such as film or fiber; contacting the product with a nonsolvent for cellulose t ...


40
Waltz Douglas G: Method of making an encapsulated assembly. Varo Semiconductor, Olson Trexler Wolters Bushnell & Fosse, November 5, 1974: US3845552 (43 worldwide citation)

The illustrated embodiment of the present invention is directed to an electronic component which has the discrete electronic element connected in series with interconnecting wires and the two are encapsulated. The electronic element and interconnecting wires are fastened together by connecting joint ...