Portable grinding machine for resurfacing cylinder head retainer

Details Portable grinding machine for resurfacing cylinder head retainer Portable grinding machine for resurfacing cylinder head retainer

1976-02-19

1978-01-24

Kelly, Donald G.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

B24B 1900

Patent

active

040696243

ABSTRACT:
A portable grinding apparatus which refinishes the cylinder head retainer seat in an engine block to provide a surface substantially flat and square with the axis of the cylinder bore. The positioning discs are axially mounted on a central shaft, the lower of these discs enables the grinding apparatus to be initially inserted and centered within the cylinder while the upper disc is expandable within the cylinder for securing the grinding apparatus in the proper orientation for a grinding tool to refinish the surface of the cylinder head retainer seat square to the axis of the cylinder bore.

REFERENCES:
patent: 2297074 (1942-09-01), Rohrdanz
patent: 2371465 (1945-03-01), Olsson
patent: 2458472 (1949-01-01), Irwin
patent: 2541412 (1951-02-01), Frost
patent: 2707358 (1955-05-01), Grunder
patent: 2997822 (1961-08-01), Lass
patent: 3148486 (1964-09-01), Gray et al.

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