Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1996-10-17
1998-05-19
Marmor, Charles A
Machine element or mechanism
Control lever and linkage systems
Elements
403109, 16115, B25G 104
Patent
active
057524157
ABSTRACT:
A retracting handle bar including a plurality of tubes that slide one inside another, a plurality of lock devices for locking the tubes in the extended position, and a press bar for unlocking the lock devices, wherein: each of the lock devices includes an axial member mounted in one end of an antecedent tube, a retainer strip pivoted to the axial member, and a socket mounted around the retainer strip and the axial member, the axial member having a body with a taper hole at one end, and an extension rod at an opposite end, the body of the axial member being inserted into a second tube, the axial extension rod of the axial member being inserted into the antecedent tube, the retainer strip having a fixed end pivoted to the axial extension rod of the axial member inside the antecedent tube, and a free end disposed inside the antecedent tube, the free end of the retainer rod having a raised portion forced into engagement with a locating hole in the antecedent tube, the socket being disposed inside the second tube, having an inner diameter smaller than the outer diameter of the body of the axial member, and at least one axial spring arm, each of the at least one axial spring arm having a raised portion at an outer side forced into engagement with one locating hole in the second tube; when the press bar is depressed, the retainer strip of each lock devices is disengaged from the corresponding tube, permitting the retracting handle bar to be collapsed.
REFERENCES:
patent: 2427841 (1947-09-01), Dichter
patent: 4256320 (1981-03-01), Hager
patent: 5519919 (1996-05-01), Lee
Battista Mary Ann
Marmor Charles A
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