Hand-held apparatus for machining of cylinder head valve guide h

Details Hand-held apparatus for machining of cylinder head valve guide h Hand-held apparatus for machining of cylinder head valve guide h

1994-04-12

1995-08-29

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Processes

Bit detachable

408 835, 408 95, B23B 3500, B23B 4112

Patent

active

054454786

ABSTRACT:
A cradle for a hand-held tool for machining of cylinder head valve guide holes. The tooling has a pilot portion. A collar has a passage for the tooling and is shaped to engage a least worn portion of a valve seat associated with the valve guide hole around the circumference thereof without engaging more worn portions of the valve seat. The cradle comprises a bracket which has a passage for the tooling without passage of the collar so that the bracket can bear on the collar. Force is applied to the bracket to hold the collar in engagement with the valve seat.

REFERENCES:
patent: 3157068 (1964-11-01), Rickert
patent: 3333487 (1967-08-01), Parry
patent: 3764204 (1973-10-01), Kammeraad
patent: 4147462 (1979-04-01), Appleby et al.
patent: 4545706 (1985-10-01), Hiroyasu et al.
patent: 5281057 (1994-01-01), Ritt
"Rapid Crankshaft Repair Sleeves Phosphor-Bronze Valve Guide Sleeves," brochure from Parts Manufacturing Company, Ltd., pp. 6 and 7.

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