Forbes G de Brie Perry: Continuously-variable ratio transmission. National Research Development, Cushman Darby & Cushman, December 16, 1986: US04628766 (93 worldwide citation)

A continuously-variable-ratio automotive transmission, typically of the toroidal-race rolling traction type, in which mechanism comprising a clutch, a brake and two epicyclic combinations--a reversing train and a mixing train--is interposed between the ratio-varying unit and the output of the transm ...

David W Mortara: High resolution ECG waveform processor. Mortara Instrument, Fitch Even Tabin & Flannery, December 16, 1986: US04630204 (92 worldwide citation)

A waveform processor for processing waveforms of the ECG type from surface electrodes connected to the human body. Differential lead waveforms are sampled by a fast, high resolution A/D converter which are thereafter provided to a preprocessor where filtering and a reconstruction of the leads wavefo ...

Arthur Winters, Casper S Molee: Stereotaxic array plug. Victory Engineering, Albert F Kronman, December 16, 1986: US04629451 (91 worldwide citation)

There is disclosed a surgical stereotaxic array plug of biocompatible material having an outer periphery adapted to be secured in a complementary threaded opening provided in the skull with bores traversing the plug for receiving and positioning therapeutic apparatus and fluid dispensing devices.

David R Cok: Signal processing method and apparatus for sampled image signals. Eastman Kodak Company, Thomas H Close, December 16, 1986: US04630307 (90 worldwide citation)

A signal processing method and apparatus for providing interpolated values between sampled values in a sampled image signal, is characterized by providing a plurality of different interpolation routines for producing interpolated signal values for appropriately completing a respective plurality of k ...

Robert J Stanton: Ceramic filter with plural layers of different porosity. Refractron, Martin Lukacher, December 16, 1986: US04629483 (89 worldwide citation)

A monolithic, layered, tubular ceramic filter structure with clearly defined layers of different permeabilities and porosities formed by compressing plastic masses of ceramic materials of selected particle size with binders to form the substrate layer with the desired, typically more open structure, ...

Kamal A Youssef: Toothbrush. December 16, 1986: US04628564 (89 worldwide citation)

A toothbrush with a liquid-storing sponge structure formed with a thickness diminishing to a pointed head which projects outwardly longitudinally from the bristle head. The sponge structure is in contacting engagement with the bristles whereby the stored liquid may be introduced into and along the r ...

Michael E Murphy: Adjustable hospital mattress with removable inserts. Lutheran Hospital Foundation, Foley & Lardner, December 16, 1986: US04628557 (88 worldwide citation)

A hospital mattress which is flexible and permits head elevation and knee flexion has removably securable inserts which can be repeatedly removed or replaced and secured without requiring substantial displacement of the patient. A body of resilient material, preferably closed-cell polymer foam, is u ...

Max Lerman: Cervical thoracic orthosis. United States Manufacturing Co, Christie Parker & Hale, December 16, 1986: US04628913 (88 worldwide citation)

A cervical thoracic orthosis includes a chest plate and a back plate for overlying a patient's chest and back, fastening means for securing in a fixed position around the patient's upper torso, an occipital support shaped to conform to the occipital region of the patient's head, an occipital support ...

Josef Pfeifer: Polyimides, a process for their preparation and their use. Ciba Geigy Corporation, Luther A R Hall, Michael W Glynn, December 16, 1986: US04629777 (85 worldwide citation)

Homopolyimides and copolyimides of aromatic tetracarboxylic acids and aromatic diamines which are substituted in the two ortho-positions relative to at least one N atom by alkyl, alkoxy, alkoxyalkyl, cycloalkyl or aralkyl, are soluble in organic solvents and have increased glass transition temperatu ...

Rudolf Polzer: Programmable inductively coupled transponder. ANT Nachrichtentechnik, Spencer & Frank, December 16, 1986: US04630044 (85 worldwide citation)

An automatic information transmission system for a mobile object, the system including a response unit arranged to be carried along with the mobile object, and an interrogation unit arranged to be disposed alongside the path of movement of the mobile object for movement of the response unit past the ...