Telescoping arm apparatus

Details Telescoping arm apparatus Telescoping arm apparatus

1992-03-20

1993-10-05

Reese, Randolph A.

Joints and connections

Interfitted members

Including discrete retainer

403377, 403365, 403109, F16B 710

Patent

active

052498816

ABSTRACT:
A telescoping arm has a rod slidable within a sleeve defining an interior bore. A bushing attached to the rod slides within the bore and has a substantially rigid block constrained by the bore against substantial rotation or lateral movement. The bushing further includes a spring portion biased against the sleeve to provide frictional resistance to telescoping of the apparatus and to prevent the bushing from rattling in the bore. The spring responsively accommodates small lateral and rotational forces, while the block bears more substantial loads.

REFERENCES:
patent: 2542967 (1951-02-01), Waechter
patent: 3430994 (1969-03-01), Keller, II
patent: 3539185 (1990-11-01), Andis
patent: 4174900 (1979-11-01), Ina
patent: 4629078 (1986-12-01), Korty
patent: 4649679 (1987-03-01), Arens
patent: 4685751 (1987-08-01), Dupree
patent: 4733911 (1988-03-01), Fulcheri
patent: 4932622 (1990-06-01), Hayakawa
patent: 4997307 (1991-03-01), Schmanski
patent: 5069570 (1991-12-01), Pryor et al.
patent: 5152627 (1992-10-01), Arnold
Promotional literature showing unit No. 2046 with Telescoping Arm Assembly No. 42-0608-00, p. 38 of A-Dec.RTM. Equipment Catalog, Sep., 1991.
Engineering drawing of Telescoping Arm Assembly No. 42-0608-00, unpublished.

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