Balamuth Lewis, Kuris Arthur, Karatjas Manual: Ultrasonic kits and motor systems. Ultrasonic Systems, May 7, 1974: US3809977 (289 worldwide citation)

The invention discloses various embodiments of an ultrasonic kit adapted to be used in the home or for industrial purposes, as well as a variety of ultrasonic motor constructions and ultrasonic converter designs to be used either individually or in combination with each other. The ultrasonic motor i ...

Young Gary C, Ferrell Howard H: Process for simultaneously increasing recovery and upgrading oil in a reservoir. Continental Oil Company, Scott F Lindsey, May 7, 1974: US3809159 (240 worldwide citation)

A process for simultaneously increasing recovery and upgrading oil in a reservoir by injecting gas produced by the in situ gasification of coal to increase recovery and upgrade said oil. The gas is also useful in the production of steam and other gaseous materials for injection.

Tronzo Raymond G: Bone implant with porous exterior surface. Jackson Jackson & Chovanes, May 7, 1974: US3808606 (228 worldwide citation)

A bone implant for vertebrates, including humans and animals in veterinary surgery such as hip prosthesis or a bone implant into the jaw in dental surgery, having a solid surface adapted to be in contact with the growing bone, said surfaces having at the outside at least a depth of 100 microns and p ...

Mathauser William R: Quick connect electrical coupler. Shoemaker and Mattare, May 7, 1974: US3810258 (122 worldwide citation)

A unique quick connect electrical coupler, comprising a female coupling half having electrical contact means, magnet means and tapered recess means therein. A male coupling half having electrical contact means and magnet means therein and tapered projecting means adapted to be received in said reces ...

Leonheart William H: All terrain vehicle. Townsend & Townsend, May 7, 1974: US3809004 (116 worldwide citation)

An all terrain vehicle and a suspension system for an all terrain vehicle is disclosed with a drive system that affords steerage by braking the wheels on one or the other sides of the vehicle and without turning the wheels. The improved suspension system is provided with independently suspended whee ...

Zieve Robert M, Maginnis Christopher L, Kleidermacher Moishe: Processor synchronization scheme. The United States of America represented by the Secretary of the Navy, Sciascia R S, Schneider P, May 7, 1974: US3810119 (112 worldwide citation)

A method of maintaining synchronization between two independently clocked, tored-program computer processors which are executing the same program simultaneously and are connected in a master-slave relationship. There is further provided a method of preventing a failure from disabling both master and ...

Kabat Jules M, Beggs James H: Method and system for transmitting data and indicating room status. Integrated Systems Company, Lowe Kokjer Kircher Wharton & Bowman, May 7, 1974: US3810096 (111 worldwide citation)

A method and system for transmitting data and indicating room status has a transmitter and a receiver utilizing the neutral and ground lines of a conventional AC room power line as a communications link. The transmitter sends coded signals through a wall outlet via the neutral and ground to the rece ...

Lichtblau George Jay: Electronic security system. Weingarten Maxham & Schurgin, May 7, 1974: US3810147 (109 worldwide citation)

An electronic security system especially adapted for use in retail stores and employing a multi-frequency resonant tag circuit having distinct frequencies for detection and deactivation. A transmitting system provides an electromagnetic field within a controlled area at a frequency which is swept th ...

Schachet Eli, Deuschle Fritz: Wound drainage device. Sherwood Medical, May 7, 1974: US3809086 (100 worldwide citation)

A portable, wound drainage, suction pump for extracting body fluids from wounds has a substantially rigid vessel, a top plate carrying an actuator member, a resilient diaphragm disposed in the vessel and defining with the lower portion of the vessel an expansible chamber, and an actuating plate on t ...

Hutter Harold Gregory: Sealed coaxial connector. Cass N, Arbuckle Frederick M, May 7, 1974: US3810076 (100 worldwide citation)

A sealed coaxial cable connector. A member of a moldable resilient material is provided at the junction between an internal cylindrical opening through the center of a connector body and an enlarged counterbore at the forward end of the body. The member, which may for example be molded to the rear s ...