Expansible chamber devices – Mutually relatively movable cylinder or sleeve – member... – Cylinder or sleeve forms working member
Patent
1995-06-07
1998-09-01
Nguyen, Hoang
Expansible chamber devices
Mutually relatively movable cylinder or sleeve, member...
Cylinder or sleeve forms working member
92 53, 91167R, 91156, F01B 720
Patent
active
057995630
ABSTRACT:
A valve spring compressor apparatus for removing and installing valve springs on automotive racing engines includes a valve seat and a compressor pump assembly. The valve seat is placed between the valve spring and the engine housing. The compressor engages the valve spring seat with a support arm and extends a piston toward the valve spring seat, thus compressing the valve spring and allowing for the removal of the retainer ring and keeper lock. The compressor uses a source of compressed air to drive a power piston into a compression chamber multiplying the supply air pressure several times. This multiplied air pressure is retained in the extension piston chamber by a one-way valve. As the extension piston extends, the multiplied air pressure in the extension piston is maintained by repeated cycling of the compressor.
REFERENCES:
patent: 3877349 (1975-04-01), Schindel
patent: 5247872 (1993-09-01), Hoshi
Nguyen Hoang
Peek Brothers Investments, LLC
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