11
Steven A Johnson: Multiple-phase flowmeter and materials analysis apparatus and method. J Winslow Young, H Ross Workman, Rick D Nydegger, October 14, 1980: US04228353 (115 worldwide citation)

An apparatus and method for elemental analysis and non-invasive measurement of the mass flow rate and/or density distribution of a multiple-phase system. The apparatus includes at least two X-ray sources, transmission detectors for the X-ray sources, fluorescence detectors, and collimators all of wh ...


12
Theodore L Bernhard, Ernst Dummermuth, Thomas M Hoch, Bruce S Jaffe, Gregory L Merrell: Multiprocessor numerical control system. Allen Bradley Company, Quarles & Brady, October 14, 1980: US04228495 (103 worldwide citation)

A numerical control system includes a main processor which performs such functions as interpolation and outputting of motion command signals to the servomechanisms on a machine tool. A separate programmable interface processor connects to the main processor bus structure and it operates as a program ...


13
Jack Goss: Mechanism for aurally instructing a patient and method. Extracorporeal Medical Systems, Tilton Fallon Lungmus & Chestnut, October 14, 1980: US04227526 (102 worldwide citation)

A mechanism for aurally instructing a patient whose circulatory system is coupled to an infusion or exchanging machine and which includes a comparing means for discriminating between various malfunctions of the machine and reporting serially those of higher priority, with the objective of institutin ...


14
Stephen C Wardlaw: Automatic disposable hypodermic syringe. William W Jones, October 14, 1980: US04227528 (100 worldwide citation)

A hypodermic syringe for use in situations wherein an experienced medical person may not be available to administer an injection. The device is sterile and water-tight and may be carried about on one's person without special precautions being taken. Upon use, substantially instantaneous but sequenti ...


15
Kyong Park: Capacitive pressure transducer. Kavlico Corporation, Poms Smith Lande & Rose, October 14, 1980: US04227419 (98 worldwide citation)

A highly linear capacitive pressure transducer system includes one or more conductive plates mounted on a diaphragm for deflection toward and away from another conducting plate. The opposed conductive plates include both a main variable capacitor and a small separate compensation capacitor mounted o ...


16
William A Roberts: Hospital bed monitor. Alvin E Hendricson, October 14, 1980: US04228426 (95 worldwide citation)

A monitoring system has a connecting unit that is adapted for connection between a nurse call button and a communication panel in a hospital room and is attached to a movable pressure activated switching means for placement in a bed or chair to operate an alarm in the nurse call system for remotely ...


17
Alan D Rousseau: Photopolymerizable composition containing ethylenically unsaturated oligomers. Minnesota Mining and Manufacturing Company, Cruzan Alexander, Donald M Sell, Mark A Litman, October 14, 1980: US04228232 (93 worldwide citation)

A photopolymerizable composition is disclosed which comprises 10 to 60% by weight of an ethylenically unsaturated, carboxylic acid containing oligomer,


18
Gaston A Palombo, Daniel B Jones: Electronic tachometer and combined brushless motor commutation and tachometer system. Dataproducts Corporation, October 14, 1980: US04228396 (85 worldwide citation)

An electronic tachometer utilizes a transducer, typically an optical encoder disc, connected to a movable mechanical element. The transducer produces a pair of triangular waves of fixed relative phase, each having slopes proportional to the velocity of the mechanical element. The triangular waves ar ...


19
Peter W Sprague: 7-Oxabicycloheptane and 7-oxabicycloheptene prostaglandin analogs. E R Squibb & Sons, Lawrence S Levinson, Burton Rodney, October 14, 1980: US04228180 (84 worldwide citation)

New 7-oxabicycloheptane and 7-oxabicycloheptene prostaglandin analogs which have the general formula ##STR1## wherein R.sup.1 is hydrogen or lower alkyl; n is 0 to 4, m is 0 to 4 and x is 0 to 8, are useful as cardiovascular agents.


20
Ernest H Price: Well perforating apparatus and method. Dennis T Griggs, October 14, 1980: US04227582 (83 worldwide citation)

A method and apparatus for perforating a well casing and surrounding formation are disclosed. The perforating apparatus includes a laser source for projecting a high intensity laser beam transversely through the well bore and surrounding formation and a nozzle assembly for injecting exothermically r ...



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