1
Leonard J DeCant Jr, Samir F Idriss, Frank R Prosl: Variable flow implantable infusion apparatus. Infusaid Corporation, Cesari and McKenna, May 8, 1984: US04447224 (277 worldwide citation)

Implantable variable flow infusion apparatus comprises a collapsible infusate chamber having an outlet conduit leading to the infusion site by way of series-connected fixed and variable fluid flow restrictors. The infusate in the chamber is maintained under substantially constant pressure by a nonel ...


2
Constantine A Kotsanis: Multi-purpose medical devices. Endoscopy Surgical Systems, John Kurucz, May 8, 1984: US04447227 (277 worldwide citation)

Multi-purpose pneumatic and hydraulic devices suitable for diagnostic and surgical use facilitate surgical procedures as well as enhance patient care and recovery by minimizing trauma, infection and iatrogenic complications. The multi-purpose devices each have at least one medical grade balloon and ...


3
Paul H Johnson, Robert B Stevenson: Footwear having improved shock absorption. Head Johnson & Stevenson, May 8, 1984: US04446634 (201 worldwide citation)

Footwear having improved shock absorption in a shoe having a heel and box portion, a first flat elastomeric bladder supported by the shoe heel portion to bear the weight of the heel of the foot of a user, an elastomeric bladder portion supported by the shoe box portion to bear the weight of the ball ...


4
John C Todd: Method and apparatus for producing viscous or waxy crude oils. Hubbard Thurman Turner & Tucker, May 8, 1984: US04446917 (170 worldwide citation)

Tubing which contains crude oil being moved to the surface is surrounded by concentric sections of pipe at various depths along portions of the tubing. Said concentric sections of pipe contain a porous media incorporating an oxidizing catalyst in the annulus between said pipe and the tubing. A fuel ...


5
Tomas E Hirschfeld: Fluorescent immunoassay employing optical fiber in capillary tube. Myron J Block, Schiller & Pandiscio, May 8, 1984: US04447546 (167 worldwide citation)

Fluorescent immunoassay apparatus and method employing a disposable consisting, in a preferred embodiment, of a short length of precise diameter capillary tubing having an axially disposed optical fiber to which is immobilized a monolayer of a component of the antibody-antigen complex (e.g., an anti ...


6
Eldon E Frisch, Leon C Parks: Valving slit construction and cooperating assembly for penetrating the same. Dow Corning Corporation, Research Against Cancer, Cushman Darby & Cushman, May 8, 1984: US04447237 (163 worldwide citation)

An improvement in the implantable shunt device of the type disclosed in U.S. Pat. No. 4,181,132 wherein each valving slit within the elastomeric body of the shunt is formed by a flattened sleeve of woven vascular prosthesis material presenting opposed interior surfaces interengaged when the valving ...


7
Michael Hamid: Dielectric loaded horn antennas having improved radiation characteristics. The United States of America represented by the Secretary of the Navy, R F Beers, Charles D B Curry, George L Craig, May 8, 1984: US04447811 (128 worldwide citation)

An H-plane sectoral horn antenna is loaded with low-loss dielectric inserts n alternative embodiments so as to reduce beamwidth, increase axial gain and to achieve non-mechanical beam scanning. In one embodiment, the antenna is transversely loaded with a multi-layer dielectric array containing an ai ...


8
William B Mayfield: Medication infusion pump. Parker Hannifin Corporation, James A Baker, Frederick L Tolhurst, May 8, 1984: US04447233 (125 worldwide citation)

An extracorporeal medication infusion device provides a precise infusion rate of a liquid medication into a human or animal body. The infusion device includes a permanent portion which has a case, a battery, a programmable electronic controller, and an electromagnetic solenoid core and solenoid coil ...


9
Edward C Duwel, Howell A Jones Jr: Remote postage meter systems having variable user authorization code. Pitney Bowes, David E Pitchenik, William D Soltow Jr, Albert W Scribner, May 8, 1984: US04447890 (124 worldwide citation)

A postage meter for use in a remote meter resetting system has data entered by a user of a selected, variable amount of postage in preparation for funding the postage meter with that amount. A unique combination is generated by the meter which varies as they function of signals generated within the ...


10
Wilber H Bailey: Transducer calibration system. Camino Laboratories, Fulwider Patton Rieber Lee & Utecht, May 8, 1984: US04446715 (120 worldwide citation)

A transducer system that provides accurate measurements of a physical variable such as pressure for any one of a number of different transducers. Each transducer includes special calibration indicators for identifying any inaccuracies in its output signal, and monitoring and correcting circuitry is ...