Ratchet mechanism for telescope devices on toy vehicles

Details Ratchet mechanism for telescope devices on toy vehicles Ratchet mechanism for telescope devices on toy vehicles

1994-12-19

1996-11-12

Marmor, Charles A.

Machine element or mechanism

Elements

Pawls and ratchets

74575, 74577SF, 74577M, 74586, 446426, G05G 518

Patent

active

055729088

ABSTRACT:
A ratchet mechanism for telescope devices on toy vehicles comprises a manually drivable driving gearwheel rotatably positioned on a telescope base body, a rack on the telescopic arm, the rack engaging with the driving gearwheel, and a pawl of ratcheting engagement with a tooth gap of the driving gearwheel for the telescopic arm to be fixed in different positions of displacement on the telescopic base body. The pawl consists of elastically flexible plastics material so that on the one hand it ratchets over the teeth of the driving gearwheel upon actuation of the driving gearwheel for the extraction of the telescopic arm and that on the other hand it is elastically deformable upon actuation of the telescopic arm in the direction of retraction. The pawl then ratchets over the teeth of the driving gearwheel while releasing the telescopic arm in the latter's direction of retraction.

REFERENCES:
patent: 1371590 (1921-03-01), Woodward
patent: 1928048 (1933-09-01), Currens
patent: 2649179 (1953-08-01), Barkdoll
patent: 5052303 (1991-10-01), Edminster
patent: 5183140 (1993-02-01), Nicoll

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