Foldable frame flexing hinge

Details Foldable frame flexing hinge Foldable frame flexing hinge

1984-03-23

1986-08-26

Johnson, Richard J.

Earth working

Miscellaneous

172311, 172457, 280411A, A01B 7300, A01B 6322, B62D 5300

Patent

active

046077081

ABSTRACT:
A forwardly foldable implement frame having a horizontal pivot or flex hinge to enable vertical flexing of the wing sections to follow the ground contour. The frame includes a pair of cam bumpers rigidly attached to the wing beam in near proximity to the flex hinge. Folding of the wing sections toward one another causes the cam bumpers to contact and automatically lock out the flex hinge.

REFERENCES:
patent: 1724143 (1929-08-01), Penland
patent: 3654999 (1972-04-01), Fischer
patent: 3982773 (1976-09-01), Stufflebeam et al.
patent: 4137852 (1979-02-01), Pratt
patent: 4172537 (1979-10-01), Gandrud et al.
patent: 4211287 (1980-07-01), Garrison
patent: 4223743 (1980-09-01), Garrison
patent: 4355689 (1982-10-01), Friggstad
patent: 4364581 (1982-12-01), Shoup

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