1
Lawrance F Berg, Peter F M Prillinger: Sealed ball and socket connection. Caterpillar Tractor Co, Phillips Moore Weissenberger Lempio & Strabala, March 30, 1976: US03947077 (15 worldwide citation)

An outer bearing race is mounted in a bore defined in a support member and an inner bearing race is universally mounted in the outer race to form a ball and socket connection therebetween. An annular retainer is secured in the bore on each side of the outer race to retain an annular lip seal therebe ...


2
Phillip R Johnson, Peter F M Prillinger, Alfred W Sieving: Control system for an integral spring-loaded parking and service brake. Caterpillar Tractor Co, Phillips Moore Weissenberger Lempio & Strabala, December 21, 1976: US03999075 (13 worldwide citation)

A control system for a spring-applied service brake which can also be used as a parking brake. Pressure from the vehicle hydraulic system is normally used to release the brakes. In the event of a loss of the primary pressure from the hydraulic system, the control system switches automatically to use ...


3
Peter F M Prillinger, Paul C Rosenberger, Alfred W Sieving: Brake master cylinder construction. Caterpillar Tractor Co, Phillips Moore Weissenberger Lempio & Majestic, October 11, 1977: US04052855 (2 worldwide citation)

Dual master cylinders are arranged to apply hydraulic pressure to a single set of vehicle brakes through a double check valve and single brake fluid conduit. A first of the master cylinders is actuated by compressed air in response to manipulation of an operator's service brake control, while the se ...


4
Peter F M Prillinger, Paul C Rosenberger: Strain-limiting fastening apparatus. Caterpillar Tractor Co, Charles E Lanchantin Jr, March 30, 1976: US03946898 (2 worldwide citation)

A strain-limiting fastening apparatus for containing a source of potential energy in entrapped relation between a pair of axially separable members includes a plurality of fasteners securable to one of the members for substantially axially holding the other member thereto in opposition to the source ...