Lifting strut for a tractor

Details Lifting strut for a tractor Lifting strut for a tractor

1990-11-13

1991-08-27

Taylor, Dennis L.

Earth working

Mast type hitch

74586, 172776, 403327, 403 46, A01B 59043, A01B 5906, A01B 6302

Patent

active

050425889

ABSTRACT:
A lifting strut having an adjusting sleeve with an externally threaded portion and an internally threaded portion. A connecting end with a threaded journal is screwed into the internally threaded portion, with a connecting end with a threaded sleeve being screwed on to the externally threaded portion. In addition, there is provided a movable holding sleeve having grooves and stops. The holding sleeve may be moved into any position relative to a rotary cross member of the adjusting sleeve provided with teeth for the purpose of changing the length of the lifting strut. Furthermore, the holding sleeve, with its grooves, may be moved across the teeth of the rotary cross member and across the teeth provided at the threaded sleeve in a corresponding position in order to arrest the change in length.

REFERENCES:
patent: 3056458 (1962-10-01), Gray
patent: 3255828 (1966-06-01), Abott
patent: 3498638 (1970-03-01), Magruder
patent: 3708017 (1973-01-01), Alexandrovsky et al.
patent: 3825283 (1974-07-01), Hansen
patent: 3837753 (1974-09-01), Weiste et al.
patent: 4519623 (1985-05-01), Orthman
patent: 4715770 (1987-12-01), Kryscyk

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