Metal working – Method of mechanical manufacture – Repairing
Patent
1978-05-04
1980-10-14
Husar, Francis S.
Metal working
Method of mechanical manufacture
Repairing
29523, 29DIG1, 291564WL, 2940206, 2940211, B23P 700, B23P 1500
Patent
active
042272920
ABSTRACT:
A worn or defective brake master cylinder is disassembled and degreased. The bore of the housing is reamed to a diameter somewhat larger than the desired finished bore diameter. A stainless steel tube is then cut to produce an insert sleeve of correct length for the housing bore and the outside diameter of the sleeve is ground to a slightly smaller diameter than the reamed diameter of the cylinder bore. The reamed bore and the exterior surface of the stainless steel sleeve are coated with an adhesive and the sleeve is inserted into the bore to the correct depth. The interior of the sleeve is then roller burnished to expand the sleeve into intimate contact with the bore. The sleeve is then drilled from the outside of the master cylinder to reopen all of the necessary ports in the master cylinder bore, following which the bore of the sleeve is honed to a very smooth finish.
REFERENCES:
patent: 1437904 (1922-12-01), Moomaw
patent: 1619479 (1927-03-01), Maupin
patent: 2424878 (1947-07-01), Crook
patent: 2500340 (1950-03-01), Boulton
patent: 2903309 (1959-09-01), Brand
patent: 3171189 (1965-03-01), Hedgecock
patent: 3828415 (1974-08-01), Kammeraad et al.
Husar Francis S.
Rayloc
Rising V. K.
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