31
Pierre Demeyer: Circuit breaker with solid-state trip unit with a digital processing system shunted by an analog processing system. Merlin Gerin, Parkhurst & Oliff, August 25, 1987: US04689712 (82 worldwide citation)

Solid-state trip unit having a unit (29, 50, 48) for digital processing of signals emitted by current sensors (16). The digital processing system provides the long delay, short delay and instantaneous tripping functions and delivers a tripping order to the relay (14). An analog processing unit (70) ...


32
Shigeo Yokoi, Takashi Isozaki, Ryuta Yamamoto, Toshiyuki Kawaguchi: System for supervising and guiding persons in construction. NGK Insulators, Parkhurst & Oliff, November 24, 1987: US04709330 (81 worldwide citation)

A system for supervising and guiding workers at various places in a construction such as an underground substation, underground market, building, or tunnel is disclosed which includes a number of receivers arranged in a number of sections of the construction for receiving infrared radiation emitted ...


33
Satsuki Komatsu: Ion concentration measuring apparatus. Olympus Optical, Parkhurst & Oliff, February 3, 1987: US04641084 (80 worldwide citation)

An apparatus for measuring a concentration of a specific ion contained in a test liquid held in a container with the aid of a reference electrode and an ion sensitive field effect transistor having a gate portion selectively sensitive to the specific ion, including a series circuit of a reference re ...


34
Gunter Rau: Measuring sensor for the non-invasive detection of electro-physiological quantities. Parkhurst & Oliff, August 11, 1987: US04685466 (79 worldwide citation)

The measuring sensor for biomedical signals, above all electro-physiological quantities, in contrast to invasive needle and wire electrodes introduced into the body through the physiological "skin" barrier, and in contrast to pure surface electrodes merely brought in contact with the body surface, h ...


35
Guy Rotbart: Circuit protection devices. Societe d Exploitation Soremec Chess, Parkhurst & Oliff, July 8, 1986: US04599597 (79 worldwide citation)

A circuit protection device, particularly for printed circuit boards, comprises a slider (25) which is held in a first operating position by fusible wire (49) extending between two pegs (19,20). The slider is propelled by a spring (48), upon fusion of the fusible wire, into a second position in whic ...


36
Yoshiki Nozaka: Apparatus for splicing successive web rolls to feed a web into a rotary press or the like. Dai Nippon Insatsu Kabushiki Kaisha, Parkhurst & Oliff, September 24, 1985: US04543152 (78 worldwide citation)

An infeed mechanism coacts with a splicer mechanism for splicing successive rolls of web and for feeding the continuous web thus obtained into a rotary press or the like via a web storage mechanism, which normally stores therein a predetermined length of the web for delivery to the press or the like ...


37
Tokio Kano, Akira Tamagawa: Particle agglutination analyzing plate. Olympus Optical, Parkhurst & Oliff, August 21, 1984: US04466740 (77 worldwide citation)

A plate for use in an immunological analysis on the basis of agglutination reaction of particles, has formed therein a number of reaction vessels each having a conical bottom surface. The plate is formed by molding of chemically resistive acrylic resins. Each vessel has an inclined bottom surface an ...


38
Ei Mochida, Takashi Kudo, Toshiyuki Sugawara, Minoru Tsumura: Apparatus for rotating reaction vessels in inclined posture. Mochida Pharmaceutical, Parkhurst & Oliff, October 30, 1984: US04479720 (77 worldwide citation)

An apparatus for rotating reaction vessels in an inclined posture, comprising a plate, means for rotatably supporting the plate, means for rotating the plate at a predetermined speed, a plurality of reaction vessel holders mounted on the edge portion of the plate and adapted for mounting reaction ve ...


39
Kazuo Hijikata, Hajime Sakuma, Yutaka Kato, Hidehiko Yamamoto: Analyzing apparatus and method for immunological agglutination reactions. Olympus Optical, Parkhurst & Oliff, February 23, 1988: US04727033 (76 worldwide citation)

An apparatus for analyzing blood samples by detecting particle agglutination patterns formed on inclined bottom surfaces of reaction vessels formed in a microplate includes a diluted sample preparing section for delivering given amounts of blood cells and serum contained in a sample tube into diluti ...


40
Jorg Sekler, Alphonse E Zumsteg, Hans Erich Hintermann: Piezoelectric contamination detector. Laboratoire Suisse de recherches Horlogeres, Parkhurst & Oliff, December 31, 1985: US04561286 (75 worldwide citation)

A piezoelectric detector for determination of the mass or film thickness of gaseous, liquid or solid substances being adsorbed or condensed on the surface of a piezoelectric resonator, having at least one measuring resonator with at least one integrated thin-film sensor, one discrete or integrated o ...