The Nupro Company

Whitey Research Tool Co.

Whitney Research Tool Company

Stephen Matousek

Ulrich H Koch

Earl D Shufflebarger

William C Steiss

William P Tobbe

Carl R Bork, Jr

Thomas J Gardner

A pressure relief valve includes a valve body having an axial inlet port and a lateral outlet port, with an enlarged bore extending between such ports. A valve bonnet attached to the valve body slidably guides a poppet for movement between closed and open positions for closing and opening the inlet port. A seal ring positioned in the bore adjacent the inlet port sealingly surrounds the poppet in its closed position. The seal ring is axially compressed between a retainer ring and a backup surface, and a ring nut threaded in the bore compressively engages the retainer ring. The ring nut is located entirely on the inlet port side of the outlet port so it does not inhibit flow to the outlet port when the poppet is open. A poppet guide bore in the bonnet extends inwardly from a bonnet end surface, and a pair of concentric recesses of different diameters also extend into the bonnet from the end surface. One recess receives a seal ring positioned in surrounding sealing relationship with the poppet, and the other recess receives a push-in retainer for retaining the seal ring in its recess. A small diameter stem on the poppet extends into a bonnet spring receiving bore and has a rounded end received by a conical recess in a guide disc. Close fitting cylindrical locating surfaces are used for providing accurate concentricity between the bonnet and body, and between the retainer ring and the bore.

Pressure relief valve

A rotary actuator wherein linear movement of a piston and rack assembly disposed in a unitary housing is converted to precise rotational movement of an operating member mounted to a pinion which operably engages the rack. The operating member extends outwardly from opposite sides of the housing and is adapted for coupling with either a single or a pair of mechanisms for purposes of selectively controlling operation of the mechanisms. The actuator includes new means for locating and supporting the rack, for locating and sealing a pinion assembly in the housing, for precisely controlling rotational movement of the operating member, and for precisely and positively locating mechanism mounting brackets to the housing. The actuator may be either single or double acting.

Rotary actuator

Adaptor plate

Growing community of inventors

Chagrin Falls, OH, United States of America

Stephen Matousek