Expansible chamber devices – Collapsible chamber wall portion – Wall portion formed of flexible material
Patent
1985-04-24
1987-05-19
Garrett, Robert E.
Expansible chamber devices
Collapsible chamber wall portion
Wall portion formed of flexible material
60594, 188344, F01B 1900, B60T 1116
Patent
active
046658033
ABSTRACT:
A brake actuating master cylinder unit for bicycles and the like comprising a unit mountable upon the handlebars of a bicycle, a master cylinder having a piston mounted therewithin, a bellofram secured to the inner surface of the master cylinder at one end thereof and at the piston engaging closed end thereof secured to the piston by means of a plurality of projecting tits extending through complementary apertures in the piston. A snap ring preferably is used to positively secure the tits with the piston. A two-part piston rod is employed between the piston and the brake actuating handle to allow same to return to the normal, non-actuated position freely and without withdrawing the piston therealong. This two-part slidable connection permits positive actuation of the piston during braking operation, but yet permits free separation and non-positive return upon completion of the brake actuation.
REFERENCES:
patent: 1442223 (1923-01-01), Knebusch
patent: 2641283 (1953-06-01), Houston
patent: 2720564 (1955-10-01), Soreng et al.
patent: 2733572 (1956-02-01), Butterfield et al.
patent: 2877996 (1959-03-01), Kinney et al.
patent: 3269276 (1966-08-01), Natanson
patent: 3899057 (1975-08-01), Carre
patent: 4391353 (1983-07-01), Mathauser
Garrett Robert E.
Williamson Mark A.
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