1
Evans James W: Swing measurement system and method employing simultaneous multi-swing display. Duckworth Hobby & Allen, February 19, 1974: US3792863 (153 worldwide citation)

A system and method for measuring at least one element of motion of the swing of an athletic implement, in which electrical signals from torque, strain and flex gauges in the implement representative of successive swings are sequentially stored and then at least two signals of successive swings of o ...


2
Brishka Alexander Ronald: Axially mating positive locking connector. International Telephone and Telegraph Corporation, Peterson Thomas L, February 19, 1974: US3793610 (121 worldwide citation)

A quick connect-disconnect axially mating electrical connector comprising interengageable receptacle and plug members carrying electrical contacts which engage upon mating of the connector members. One connector member carries a split ring which engages in an annular groove formed in the other conne ...


3
Buchner Gerhard Paul, Thomaschewski Hubertus Paulus: Passive restraint system for vehicle occupants. Uniroyal, Patterson Esq Robert J, February 19, 1974: US3792873 (80 worldwide citation)

Safety apparatus for protecting an occupant of a vehicle during an accident comprising a confinement, or so-called 'air bag', inflatable from a collapsed condition to an expanded condition in which it is adapted to restrain movement of the occupant relative to the vehicle during an accident, and mea ...


4
Selnes Arnold: Pivotal platform training apparatus with selectively connectible components. Nolte Jr Albert C, Hunter Edward B, Hamburg C Bruce, February 19, 1974: US3792860 (67 worldwide citation)

A training apparatus comprising a framework, two platforms, one end of each platform being pivotally connected to the framework, the platforms being substantially parallel to one another and being pivoted at adjacent ends, a supporting member, adjustable in length, being located between the substant ...


5
Still William L: Telemetry system for drill bore holes. Cushman Darby & Cushman, February 19, 1974: US3793632 (64 worldwide citation)

Apparatus and method for signaling within a drill bore hole without disturbing an ongoing drilling operation. Repeater stations are utilized at intervals along a drill string with the repeater input and output being in different noninterfering first and second modes. Furthermore, means are shown for ...


6
Sablev Leonid Pavlovich, Atamansky Nikolai Petrovich, Gorbunov Valentin Nikolaevich, Dolotov Jury Ivanovich, Lutseenko Vadim Nikolaevich, Lunev Valentin Mitrofanovich, Usov Valdislav Vasilievich: Apparatus for metal evaporation coating. Holman & Stern, February 19, 1974: US3793179 (62 worldwide citation)

An apparatus for metal evaporation coating, comprising an evacuated chamber, an anode made as an envelope of arbitrary shape, a cathode made of the metal being evaporated, the evaporation surface of said cathode facing the space defined by said envelope, a trigger electrode generating a cathode spot ...


7
Saltzstein Julian I: Combination dust cloth and dust mop. American Uniform Company, Prangley Dithmar Vogel Sandler & Stottand, February 19, 1974: US3792505 (61 worldwide citation)

A combination dust cloth and dust mop comprising a mop head having a platform with a mop handle mounted on one side thereof and a clasping device disposed on the other side thereof, a soft pliable cloth having a dusting surface and a back surface, a separable fastening device including a first faste ...


8
Sowman Harold G: Refractory fibers of zirconia and silica mixtures. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & Delahunt, February 19, 1974: US3793041 (60 worldwide citation)

Refractory fibers of zirconia and silica mixtures are made by shaping and dehydratively gelling, for example by extruding in air, an aqueous mixture of a zirconium compound, such as zirconium diacetate, and colloidal silica, and heating the resulting gelled fiber in a controlled manner to decompose ...


9
Clinton Harry M: Floating chemical treatment device. Swimrite, February 19, 1974: US3792979 (57 worldwide citation)

A disposable swimming pool chlorinator in the form of a one-piece, blow-molded plastic container having a relatively large upper end portion defining a flotation chamber, a conically tapered intermediate section, and a depending neck having two rows of vertically spaced, hollow protuberances on its ...


10
Sank Jon Rinaldo: Ultradirectional microphone. RCA Corporation, Norton Edward J, Squire William, February 19, 1974: US3793489 (54 worldwide citation)

A directional microphone includes a microphone unit responsive to waves in the audio frequency range and means for causing the microphone unit to operate as a second order microphone in a lower portion of that frequency range. Further means for imparting highly directional characteristics to waves i ...