Adjustable extension assembly

Details Adjustable extension assembly Adjustable extension assembly

1992-11-12

1993-10-26

Bray, W. Donald

Woodworking

Process

83574, 83859, 108 33, 108 65, 108 71, 144 1R, 144114R, 144286A, 144287, B27C 902, B25H 104

Patent

active

052557243

ABSTRACT:
An extension assembly increases the safety of bench or table-type machines without significantly reducing the mobility of the machines. The extension assembly includes an extension table, rigidly connected to a support surface of the machine, and a longitudinally adjustable support element connecting the extension table to the body of the machine. A self-adjust mechanism is provided which facilitates adjustment of the extension table of the extension assembly upon adjustment of the support surface. The self-adjust mechanism preferably includes a spring biasing inner and outer telescoping tubes of the extension assembly. Leveling assemblies may be mounted on the machine to increase its stability.

REFERENCES:
patent: 1864840 (1932-06-01), Lehner
patent: 2584196 (1952-02-01), Fernandes
patent: 3307814 (1967-03-01), Bogar, Jr.
patent: 4106381 (1978-08-01), Kreitz
patent: 4248115 (1981-02-01), Brodbeck et al.
patent: 4341247 (1982-07-01), Price
patent: 4561336 (1985-12-01), Davis
patent: 4565263 (1986-01-01), Southworth
patent: 4830076 (1989-05-01), Feyer
patent: 4874025 (1989-10-01), Cleveland
patent: 4934423 (1990-06-01), Withrow
patent: 5004029 (1991-04-01), Garner
patent: 5011104 (1991-04-01), Fang
patent: 5105862 (1992-04-01), Skinner et al.

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