1
Zinon C Possis: Heart valve prosthesis and suturing assembly and method of implanting a heart valve prosthesis in a heart. St Jude Medical, L Paul Burd, William A Braddock, Richard O Bartz, December 21, 1976: US03997923 (190 worldwide citation)

A heart valve prosthesis removably mounted on a suturing assembly. The suturing assembly has an annular sleeve carrying a fabric collar. Sutures secure the collar to heart tissue. The heart valve has a base that is removably mounted on the annular sleeve. The suturing assembly is initially secured t ...


2
Masaichiro Konishi, Tohru Kisanuki, Akio Yamanishi, Yutaka Majima: Photoelectric oximeter. Minolta Camera Corporation, Jackson & Jones Law Corporation, December 21, 1976: US03998550 (163 worldwide citation)

An optical non-invasive oximeter for measuring oxygen saturation in arterial blood utilizes a light source capable of giving off light having different wavelengths, such as light in the infrared and red region, and a pair of photoelectric devices, one responding to one wavelength and the other to th ...


3
Shigeo Fukase, Ushio Kawabe: Method of manufacturing thin-film field-emission electron source. Hitachi, Craig & Antonelli, December 21, 1976: US03998678 (138 worldwide citation)

A method of manufacturing a thin-film field-emission electron source which is of a sandwich structure of a substrate - metallic film-insulating film - metallic film and which has at least one minute cavity and a field-emitter of, for example, a conical shape within the cavity, comprises the steps of ...


4
Peter J Mandas, Inge S Telnaes: Coin accepting device. Bally Manufacturing Corporation, Gerald L Moore, December 21, 1976: US03998309 (137 worldwide citation)

A coin acceptor to prevent a cheating operation known as "stringing" wherein a coin is dropped into such an acceptor with a string attached and manipulated in a manner to make it appear that several coins have passed through the acceptor. This coin acceptor uses a series of coin position detectors w ...


5
Clifford J Anderson, James T Gumbusky: Bio-medical electrode conductive gel pads. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, December 21, 1976: US03998215 (135 worldwide citation)

A gel pad has impregnated in a porous matrix or held within a cavity, an electrically conductive hydrogel capable of transferring electrical signals between the human body and an electrode of an electrical sensing device when the hydrogel is in contact with the body surface. The hydrogel is lightly ...


6
Robert A Price: Self-adjustable holder for automatically positioning electroencephalographic electrodes. Bio Volt Corporation, Brumbaugh Graves Donohue & Raymond, December 21, 1976: US03998213 (130 worldwide citation)

A self-adjustable holder for automatically positioning electroencephalographic electrodes on the head of an animal in accordance with the International 10/20 System. This holder comprises a cap which is expandable and elastic so as to self-adjust to a snug fit when in place on the head, and a plural ...


7
Samuel F Peterson, Alfons Rundzaitis: Selectable multiple-nozzle showerhead. Associated Mills, Allegretti Newitt Witcoff & McAndrews, December 21, 1976: US03998390 (115 worldwide citation)

The improved showerhead disclosed herein includes at least two, and preferably four, separate spray nozzles and is constructed so as to permit users to select the particular spray nozzle through which water is to be discharged. The showerhead may be mounted on the end of a conventional shower arm ex ...


8
Satyan G Pitroda: Electronic diary. Lester N Arnold, December 21, 1976: US03999050 (113 worldwide citation)

An electronic diary having combined clock-calendar means and diary storage means is provided wherein a random access memory is employed in a diary mode of operation for the storage and readout of preselected daily schedule and message events keyed for visual display in response to equal time compari ...


9
Lee Webber Ramstrom, Alvydas Petras Karasa, Stanley Alan Markle: Battery pack and latch. The Black and Decker Manufacturing Company, William Kovensky, Edward D Murphy, Walter Ottesen, December 21, 1976: US03999110 (113 worldwide citation)

Securing means particularly for slide-in type battery pack to be used in cordless electric power tools. An L-shaped latch is pivoted on the tool, and its short leg cooperates with a release mechanism at the remote end of the battery pack. A release member, spring loaded on the battery pack, urges th ...


10
John A Kressin, Charles T Bergman, Arnold R Buchholz: Coin sorter. Brandt, Quarles & Brady, December 21, 1976: US03998237 (107 worldwide citation)

A coin sorter is disclosed in which coins deposited on a horizontal rotating disc are directed in single file to the circumference of the disc where the coins are removed, by denomination, by means of plows which lift one side of the coin so that the coins will fly off the disc. The removed coins en ...