Elongatable support

Details Elongatable support Elongatable support

1992-04-21

1994-05-24

Foss, J. Franklin

Supports

Props and braces

Adjustable length

254 12, 254 95, A47F 500

Patent

active

053141571

ABSTRACT:
A telescoping support has at its actuating head at which a roller engages a bar which emerges from the outer tube, a sleeve-like extension provided with a pawl which can engage the bar in a sleeve-locking manner under load to prevent spontaneous contraction of the support upon rupture of the roller.

REFERENCES:
patent: 788045 (1905-04-01), Hammond
patent: 1142452 (1915-06-01), Oliver
patent: 1420556 (1922-06-01), Klasing
patent: 1648817 (1927-11-01), Maerk
patent: 2153722 (1939-04-01), Loughmiller
patent: 2918257 (1959-12-01), Hahn
patent: 3589757 (1971-06-01), Mooney
patent: 3930645 (1976-01-01), Anderson
patent: 4083530 (1978-04-01), Linnepe

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