Overextensible, three-piece telescopic guide

Details Overextensible, three-piece telescopic guide Overextensible, three-piece telescopic guide

1989-08-14

1990-09-04

Hannon, Thomas R.

Bearings

Linear bearing

Ball bearing for drawer

312286, 384 21, A47B 8800

Patent

active

049539906

ABSTRACT:
An overextensible, three-piece telescopic guide comprising an outer or housing bar (1), a middle bar (2) and an inner or drawer bar (3). The bars are slidable relatively to each other by two ball cages (4,5) respectively mounted between the housing bar and the middle bar and between the middle bar and the drawer bar. For the purpose of locking the bars (1,2,3) in the direction of extension, loose sliding buffers (6,7) are mounted at both ends of the two ball cages (4,5) which sliding buffers are slidable within the corresponding bars and lock the middle and the drawer bars (2,3) in both extended end positions by end stops (12,14).
At each end (10) of the middle bar (2) a substantially triangular tilting member (8) is mounted, by which the guide's movement in the direction of extension is defined so that the drawer bar (2) and the middle bar (3) first move jointly outwardly until the middle bar (2) has reached its end position.

REFERENCES:
patent: 1363687 (1920-12-01), Sorg
patent: 1736108 (1929-11-01), Anderson et al.
patent: 2914370 (1959-11-01), Hensch et al.
patent: 4178049 (1979-12-01), Loo
patent: 4183596 (1980-01-01), Greene et al.

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