Joints and connections – Articulated members – Rotatable
Patent
1993-01-11
1994-08-30
Reese, Randolph A.
Joints and connections
Articulated members
Rotatable
403119, 403117, 362427, 248122, F16D 310
Patent
active
053421370
ABSTRACT:
A swing arm is disclosed including a bottom curved tube, which has a first fitting with an inward bottom staking step and a second fitting with an inside chamber respectively at two opposite ends, a top straight tube, which has a first fitting with an inward bottom staking step and a second fitting with an external stop knob respectively formed at two opposite ends, and a connecting device to connect the first fitting of the top straight tube to the first fitting of the bottom curved tube through a hollow T-shaped rivet joint for permitting the top straight tube to be turned on the bottom curved tube for engaging the external stop knob of the second fitting of the top straight tube into or disconnecting it from the chamber of the second fitting of the bottom curved tube, a first washer retained between one head of the hollow rivet and one bottom staking step, a second washer retained between the other head of the hollow rivet and the other bottom staking step, and two friction washers retained between the staking steps.
REFERENCES:
patent: 2242303 (1941-05-01), Irmischer
patent: 2488898 (1949-11-01), Brasty
patent: 3601598 (1971-08-01), Horn
patent: 4121280 (1978-10-01), Chapman et al.
patent: 4347557 (1982-08-01), Warshawsky
patent: 4381538 (1983-04-01), Warshawsky
patent: 4821159 (1989-04-01), Pike
patent: 4880193 (1989-11-01), Warshawsky
Kim Harry C.
Reese Randolph A.
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