51
Davies Allport: Irrigation hose and method for its construction. Christie Parker & Hale, January 27, 1981: US04247051 (57 worldwide citation)

An irrigation hose comprises an elongated flat sheet of flexible water impervious material bent along its length to form a lapped longitudinal seam between opposing longitudinal margins of the sheet. Two transverse ribs in spaced apart relationship interconnect the opposing margins along their lengt ...


52
Dale A Mueller, Stephen L Serber: Heat pump system compressor fault detector. Honeywell, Roger W Jensen, January 27, 1981: US04246763 (57 worldwide citation)

A compressor fault detection and control system for a reverse cycle refrigeration system for detecting faulty compressor operation and for controlling the system in response to the detection of a fault by inhibiting the compressor and for providing a fault indication, the control system comprising a ...


53
Friedrich Wilhelm Schroder: Diaper including moisture-responsive seal means. Paul Hartmann Aktiengesellschaft, Laubscher & Laubscher, January 27, 1981: US04246900 (56 worldwide citation)

A diaper construction is disclosed including a pair of elastic leg seal members extending longitudinally of the diaper adjacent each side edge thereof, the leg seal members being operable between expanded and contracted conditions, respectively, and moisture-responsive devices initially maintaining ...


54
Paul J Kovar, Marvin D Southerlan: Joist bridging member. Warren F B Lindsley, January 27, 1981: US04246736 (55 worldwide citation)

A one-piece cross brace or bridging member for parallel structure beams, such as joists, studs, rafter trusses and the like which spaces and holds them in place relative to each other during assembly, and under normal building load conditions holds them in place longitudinally and prevents or greatl ...


55
Kazuichi Seki, Yoshio Shimizu, Yoshio Kato: Vertical axis wind turbine. Gakko Hojin Tokai University, Koda and Androlia, January 27, 1981: US04247253 (55 worldwide citation)

Wind turbines are largely divided into vertical axis wind turbines and propeller (horizontal axis) wind turbines. The present invention discloses a vertical axis high speed wind turbine provided with rotational speed control systems. This vertical axis wind turbine is formed by having blades of a pr ...


56
William S Credle: Non-pressurized fluid transfer system. The Coca Cola Company, Birch Stewart Kolasch & Birch, January 27, 1981: US04247018 (54 worldwide citation)

A non-pressurized fluid transfer system for stock rotation of liquids packaged in large non-pressurized containers such as 55 gallon drums is described. Two drums or sets of drums are used and the system automatically changes over from a first drum to a second drum when the first drum no longer cont ...


57
James A Rodrian: Animal identification and estrus detection system. Quarles & Brady, January 27, 1981: US04247758 (54 worldwide citation)

An animal such as a dairy cow carries a transponder unit which includes a motion sensor. When the animal comes within range of a transceiver unit, it is interrogated and the transponder unit transmits data which identifies the animal and indicates the number of movements of the animal. The number of ...


58
William W Angell: Natural tissue heart valve fixation process. Thomas E Ciotti, January 27, 1981: US04247292 (54 worldwide citation)

A process for fixing a natural tissue heart valve whereby the valve has improved hydraulic performance is disclosed. The valve is first placed in glutaraldehyde with the valve cusps kept in the closed position by applying hydraulic pressure to the ventricular side of the valve. The valve is then tri ...


59
Olagoke Olabisi: Process for molding of plastic structural web articles. Union Carbide Corporation, Gerald R O Brien Jr, January 27, 1981: US04247515 (54 worldwide citation)

Process is disclosed wherein plastic material is passed into a mold cavity; pressurizing fluid is injected into the plastic material under controlled pressure and at a controlled rate to cause the plastic material to flow out and assume the contour of the cavity, the gas pressure being maintained un ...


60
Almar T Widiger, Charles C Hwo, Norman G Gaylord, Pang Chia Lu: Composition comprising a blend of EVA polymers having differing VA contents; films and laminates made therefrom by extrusion; and heat-sealed food bags made from the laminates. American Can Company, Robert P Auber, Ira S Dorman, January 27, 1981: US04247584 (52 worldwide citation)

Molecularly oriented films, and compositions used therein, comprise blends of a first EVA copolymer having a relatively low VA content, and a second EVA copolymer having a relatively high VA content. The blend exhibits a balance of properties which permit ready processability for orientation, while ...