Bearing ball for a three-point connecting device

Details Bearing ball for a three-point connecting device Bearing ball for a three-point connecting device

1989-07-28

1990-08-14

Kindrat, Andrew V.

Joints and connections

With adjunctive protector, broken parts retainer, repair,...

Position or guide means

403131, 403122, B25G 300

Patent

active

049482874

ABSTRACT:
The invention relates to a bearing ball (10, 11) for receiving the implement pin (8, 9) of an agricultural implement (1) in the catching jaw (7) of the catching hook (6) of a three-point connecting device (3) belonging to a tractor (2). The bearing ball comprises a hollow ball (2) with a cylindrical tube (14) passing through it. The central region of the cylindrical tube (14) has been provided with a formation (15) which extends radically and supports the inner face (13) of the hollow ball (12) in a force-free way. It secures the hollow ball (12) on the cylindrical tube (14) in the axial direction and permits relative rotation between the two. This provides better support because only the ends of the cylindrical tube (14) rest against the implement pin and bending of the cylindrical tube (14) no longer adversely affects the bearing ball.

REFERENCES:
patent: 2477676 (1949-08-01), Woodling
patent: 2673507 (1954-03-01), Sawyer
patent: 4243192 (1981-01-01), Johnson
patent: 4619543 (1986-10-01), Vollmer et al.
patent: 4842310 (1989-06-01), Muffke et al.

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