1
Sylvester W Bies: Retractable blade knife. The Stanley Works, Prutzman Kalb Chilton & Alix, November 18, 1980: US04233734 (185 worldwide citation)

A retractable blade knife of the type having an elongate tubular handle and an elongate flat thin blade mounted for longitudinal sliding movement in the handle, is provided with a combination slide and latching member for positioning the blade which includes a slide mounted for sliding movement on t ...


2
Charles J Burstone, A Jon Goldberg: Orthodontic appliance of titanium alloy. University of Connecticut, Prutzman Kalb Chilton & Alix, April 15, 1980: US04197643 (97 worldwide citation)

A beta-titanium alloy wire is used as the force-imparting component in orthodontic appliances. The alloy provides up to a threefold improvement over 18-8 stainless steel wire in load deflection rate and a twofold increase in maximum elastic displacement while providing a low modulus of elasticity an ...


3
Robert D Goodfellow: Rotary cutter assembly. Prutzman Kalb Chilton & Alix, December 23, 1986: US04630693 (78 worldwide citation)

A rotary cutter assembly employs a wear sleeve to improve the durability of the drill head and to seal off a fluid passageway in the shank of a drill bit which is mounted to the drill head. The shank of the drill bit is releasably secured to the drill head by means of lock pins received in intersect ...


4
Lambert H Mott: Inertial filter of the porous metal type. Prutzman Kalb Chilton & Alix, January 29, 1980: US04186100 (77 worldwide citation)

A porous filter is formed of sintered metal particles and is characterized by having sintered metal particles of relatively large size throughout and a thin subsurface area adjacent the upstream surface containing sintered metal particles of relatively small size, thus providing a thin area of relat ...


5
Henning N Kornbrekke, Leon Boiucaner: Automatic door control system. The Stanley Works, Prutzman Kalb Chilton & Alix, January 7, 1986: US04563625 (73 worldwide citation)

An automatic control system for controlling the operation of a sliding door system employs an electric motor for driving the sliding door system. An encoder is mounted to the shaft of the motor for generating signals which are decoded to detect the operational position of the sliding door system. A ...


6
Walter E Allen: Solenoid operated valve. Prutzman Kalb Chilton & Alix, October 20, 1981: US04295631 (65 worldwide citation)

A solenoid operated valve with a primary diaphragm type valve member controlled in accordance with the fluid pressure on opposite sides thereof and a solenoid operated pilot valve having a fixed axially extending pilot valve outlet tube extending through a central opening in the diaphragm valve memb ...


7
George F Weimann: Knife handle. The Stanley Works, Prutzman Kalb Chilton & Alix, May 6, 1986: US04586256 (62 worldwide citation)

A knife handle employs a blade carrier having a planar blade support, a pair of parallel projecting flanges, and a laterally projecting lug for securing a blade in position to the carrier. A lateral retention tab extends from said carrier to capture an upper portion of a mounted blade for laterally ...


8
William E Howard: Spring type exercising device. Prutzman Kalb Chilton & Alix, November 17, 1981: US04300761 (61 worldwide citation)

An exercising equipment unit is provided in which a cabinet of rectilinear form having the appearance of a conventional piece of furniture when not in use, has mounted therein an articulated body support platform having an inner section pivotally connected to the interior of the cabinet, a center be ...


9
Senichi Masuda, Naoki Sugita: High-efficiency electrostatic air filter device. Midori Anzen, Prutzman Kalb Chilton & Alix, November 2, 1982: US04357150 (60 worldwide citation)

An improved high-efficiency electrostatic air filter device which has a high efficiency of dust collection and a long service life. The device is composed of a charging section having a plurality pairs of electrodes to charge the dust particles in the gas to be treated; and a dust collecting section ...


10
John C Catlett: Electromechanical door operator. The Stanley Works, Prutzman Kalb Chilton & Alix, September 2, 1980: US04220051 (56 worldwide citation)

A door operator with a reciprocable rack gear adapted to be actuated in opposite directions by an electric motor driven screw and a coaxial helical compression spring for rotating a drive gear of a door operating spindle in opposite directions for opening and closing a swinging door, the rack gear f ...