51
Economy James, Lin Ruey Y: Quilted fabric containing high surface area carbon fibers. The Carborundum Company, October 30, 1973: US3769144 (39 worldwide citation)

A quilted fabric containing high surface area carbon fibers is made by uniting a central layer of flexible activated carbon fibers between a pair of outer layers of reinforcing fabric, positioned on each side of the layer of activated flexible carbon fibers, with a network of quilting stitching. The ...


52
Nydam Bernard, Voetberg Ralph: Extendable and tiltable load-transfer platform. October 30, 1973: US3768673 (38 worldwide citation)

A load-carrying platform is roller-mounted on rails normally secured to the floor of a truck, and is arranged to move from a forward position over the floor of the truck to a rearwardly-extended position overhanging the rear end of the truck. At the rearward extreme of this movement, the rails relea ...


53
Hu Kwoh H, Loconti Joseph D: Temperature-time integrating indicator. The United States of America represented by the Secretary of the Army, October 30, 1973: US3768976 (38 worldwide citation)

A temperature-time integrating indicator for determining the safe limit of torage of a food product or other material which is subject to deterioration due to temperature and length of storage. In its preferred form the temperature-time integrating indicator comprises a transparent polymeric film pa ...


54
Jennings Samuel J: Life preserver bubble. Community Gin Company, October 30, 1973: US3768467 (38 worldwide citation)

A self-inflatable bubble for the protection and preservation of life on land and water. The bubble is formed of a pliable air and water impervious material which when arranged around the user provides on environment in which he may comfortably exist in the bubble whether on land or sea. A hook is pr ...


55
Williams Ronald O: Battery conservation circuit. Stewart Warner Corporation, October 30, 1973: US3769593 (37 worldwide citation)

A battery conservation circuit for a selective paging receiver adapted to receive subscriber address-bearing code signals of a specific format comprises a timing circuit which periodically energizes the receiver for short periods of time to determine if valid address-bearing signals having the speci ...


56
Martini Leo A: Percussion drilling system. October 30, 1973: US3768576 (37 worldwide citation)

A unique, variably damped, steady state, broad range, fluid forced, force superposition, oscillatory, percussion drilling method and means, capable of resonant frequency operation and force magnification, is disclosed that is operable from liquid or gaseous fluid under pressure for rotary drilling o ...


57
McSwain Thad M: Retractible canopy shelter. October 30, 1973: US3768540 (37 worldwide citation)

A retractible panel construction, primarily in the nature of a canopy, comprising a storage roller mounted flexible panel selectively extended along and guided by a pair of laterally spaced track defining rails. Movement of the panel is controlled by a pair of panel mounted cables which engage and g ...


58
Anders Russell, Halasz Egon F: Tongue depressing aspirating tip. October 30, 1973: US3768477 (36 worldwide citation)

Herein described is a tongue depressing aspirating tip for use in dentistry which includes a handle which is substantially hollow and a substantially flat wide portion in some embodiments shown as being spoon-shaped which is also substantially hollow and communicates with the hollow portion of the h ...


59
Powers Al: Soft and securely held shoe. Nippon Rubber USA, October 30, 1973: US3768182 (36 worldwide citation)

An athletic shoe designed for wear without stockings, which avoids discontinuities where the shoe is tight against the foot, which permits considerable expansion to accommodate a range of widths and arch heights, but which firmly encircles the foot for a tight fit that is desired in athletic shoe we ...


60
Brumfield Robert C: Blood oxygenator and thermoregulator apparatus. October 30, 1973: US3769162 (36 worldwide citation)

Venous human blood flows into a base distributing manifold of a blood oxygenator, whose operating components are cooperatively vertically coaxially disposed. The blood is distributed into vertically aligned multiple, controlled small diameter oxygen exchange tubes, each exchange tube having a coaxia ...