Telescopic shuttering support

Details Telescopic shuttering support Telescopic shuttering support

1990-03-22

1991-10-29

Smith, Gary L.

Supports

Props and braces

Adjustable length

2483544, 248161, 108144, 403109, A47F 500

Patent

active

050609033

ABSTRACT:
A telescopic support 14 of variable length has an outer tube tube 11 and an inner tube 12 which is telescopically displaceable therein. A shallow external thread 16 is provided at one end of the outer tube 11 onto which there is screwed a positioning nut 17 with a lowering sleeve 14 rotatably secured thereto. In the region of the thread 16 there is at least one elongate slot 18 in the outer tube into which a latch bolt 13 engages which is supported axially on the lowering sleeve 15. In accordance with the invention the lowering sleeve 15 can be rotationally locked in both directions in the extended position by a rotary latch 21 which engages in the elongate slot 18.

REFERENCES:
patent: 994598 (1911-06-01), Martin
patent: 2302237 (1942-11-01), McFall
patent: 3266840 (1966-08-01), D'Estrube
patent: 3516200 (1970-06-01), Marin
patent: 3870268 (1975-03-01), Larkin
patent: 3887155 (1975-06-01), Bertalot
patent: 4318352 (1982-03-01), Friedman et al.
patent: 4419026 (1983-12-01), Leto
patent: 4589622 (1986-05-01), Hutter
patent: 4627543 (1986-12-01), Nicely
patent: 4752057 (1988-06-01), Hagemes

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