Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1990-01-10
1991-08-27
Watson, Robert C.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
B23P 1904
Patent
active
050421328
ABSTRACT:
A simple, hydraulically powered tool for removing and installing the camshaft bushings of an internal combustion engine including an elongated shaft adapted to extend through the camshaft bearing journals to a hydraulic unit which is adapted to be reversibly mounted at one end of the engine to apply either a pushing or pulling force to the shaft. The elongated shaft includes a plurality of axially spaced annular grooves which are adapted to receive a first slotted collar at one end for interconnecting the shaft to the piston of the hydraulic unit and a second slotted collar at the other end to interconnect the shaft to a slotted bushing support mandrel which is adapted to be slid onto the shaft for engagement with a bushing to be installed or removed. A spacer is provided for mounting the hydraulic cylinder unit on the engine when the cylinder unit is operated to impart a pulling force to the shaft and a cradle is provided for mounting the hydraulic cylinder unit when a pushing force is to be imparted to the shaft.
REFERENCES:
patent: 2617181 (1952-11-01), D'Halm
patent: 2751670 (1956-06-01), Grad
patent: 3268995 (1966-08-01), Pullin
patent: 3327337 (1967-06-01), Nelson
patent: 4477956 (1984-10-01), Mefford
patent: 4619027 (1986-10-01), Ohannesian
patent: 4841627 (1989-06-01), Arnold et al.
patent: 4899899 (1990-01-01), Hamatani
Cummins Engine Company, Inc.
Watson Robert C.
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