Coupling hook

Details Coupling hook Coupling hook

1990-04-04

1991-09-24

Cuomo, Peter M.

Earth working

With means to facilitate mounting of implement on motor vehicle

414703, 280508, 172439, A01B 5100, A01B 59043

Patent

active

050506846

ABSTRACT:
A coupling hook (5) comprises a housing (7, 8) defining a recess (10) in which a bearing ball (12) of an implement pin (41) is received. The hook also comprises a springt-loaded locking catch (14). The catch (14) is pivotal about a bearing pin (19) with play in the direction of a first line (18) connecting the center (13) of the recess (10) to a contact point (15) between the locking catch (14) and a ball (12) in the recess (10). The coupling hook (5) also comprises a locking stop (23) engaging the locking catch (14) in an undercut recess (25) thereof to define the locking position. The size of the undercut is less than or equal to the size of the play of the catch (14) on the bearing pin (19).

REFERENCES:
patent: 3807769 (1974-04-01), Thompson et al.
patent: 3977698 (1976-08-01), von Allworden
patent: 4014562 (1977-03-01), Kunze
patent: 4071263 (1978-01-01), Kunze
patent: 4366967 (1983-01-01), Vollmer et al.

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