Implements or apparatus for applying pushing or pulling force – Portable implements or apparatus for tensioning flexible... – Including rotatably driven drum for engaging either material...
Patent
1985-05-03
1987-03-03
Levy, Stuart S.
Implements or apparatus for applying pushing or pulling force
Portable implements or apparatus for tensioning flexible...
Including rotatably driven drum for engaging either material...
74 892, 254242, 254334, 254358, 254387, B66D 136, B66D 316, B66F 344, F16H 2702
Patent
active
046470140
ABSTRACT:
A telescopic device with two telescopic members (1, 2) comprises a control means with a flexible transmission element (4) for bringing the telescopic members in relative movement. The transmission element (10) is in engagement with a driving wheel (5), which is fixed relative to one (1) of the telescopic members in that the driving wheel is journalled at a base part (3) attached to said one telescopic member and from which the transmission element extends in a loop, which is arranged about a diverting wheel (8) arranged within a space limited by the telescopic members. The diverting wheel (8) is likewise fastened relative to the first telescopic member (1). The second telescopic member (2) is connected to a part (10) of the transmission element which extends between the driving member (5) and the diverting member (8), whereby thus a rotation of the driving member in a first direction causes contraction of the telescopic members while a rotation of the driving wheel in a second direction causes extension of the telescopic members.
REFERENCES:
patent: 191619 (1877-06-01), Slaton
patent: 1861191 (1932-05-01), Russell
patent: 2352678 (1944-07-01), Angell
patent: 2661816 (1953-12-01), Hulsart
patent: 3337187 (1967-08-01), Sumner
patent: 3745725 (1973-07-01), Boucaud
patent: 3891184 (1975-06-01), Fields
Hail III Joseph J.
Levy Stuart S.
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