Caterpillar Tractor Co.

James A Ritchie

Alexander Goloff

Noble G Barker

An improved slant axis rotary mechanism such as an engine, a compressor, a pump, or the like. The mechanism includes a housing, a shaft journalled in the housing having an angularly offset portion within the housing, and a rotor journalled within the housing on the angularly offset portion. The rotor hub has a pair of opposed grooves, each of which is adapted to receive a closed unitary annular seal which can be inserted therein to a predetermined depth. Additionally situated within each groove is a back-up spring urging the seal to bear against the housing and an O-ring providing a static seal between the seal and the groove.

Oil seal for a rotary engine

An improved rotary mechanism having a housing defining an operating chamber, a shaft journalled in the housing and extending through the chamber, a rotor journalled on the shaft and within the operating chamber, at least one seal receiving groove in the rotor and a seal within the groove having a surface sealingly engaging the housing. An elastomeric O-ring is disposed within the groove and sealingly engages the sides of the groove. It is also disposed adjacent the seal oppositely from the sealing surface. A conduit is provided for directing fluid under pressure to the interior of the O-ring to cause the same to bias the seal against the housing.

Seals for rotary mechanisms

An improved ported mechanism such as an engine, compressor or the like. The mechanism includes a housing defining a chamber and a liner is disposed within the housing and supported thereby to define the chamber walls. Coolant passages extend between the housing and the liner and a piston is movable within the chamber. A port receiving opening is located in the housing and a port in the liner is provided and includes a tubular element extending from the liner into the opening. A fluid-impervious heat transfer impeding structure is exteriorly of and surrounds the tubular element and is disposed within the opening. A flexible seal is in the opening and interposed between the housing and the heat transfer impeding device so that the seal prevents leakage at the port and the impeding device prevents rapid deterioration of the seal.

Engine ports

A slant axis rotary mechanism such as an engine, pump, or the like. The mechanism includes a shaft having an angularly off-set portion journalling a rotor thereon. The rotor has a peripheral flange with a plurality of apices on each side of the flange. The mechanism further includes a housing defining an operating chamber receiving the rotor and including an outer spherical peripheral wall adapted to be sealingly engaged by a seal carried by the periphery of the flange. The housing also includes spaced, generally radially extending side walls adapted to be sealingly engaged by seals carried by the rotor apices. According to the invention, the housing is defined by a pair of housing segments flanking the rotor, each segment having one of the radially extending side walls formed therein. A liner having a spherical inner surface defining the outer spherical peripheral wall is clamped between the housing segments.

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Peoria Heights, IL, United States of America

James A Ritchie