Positive drive override mechanism

Details Positive drive override mechanism Positive drive override mechanism

1985-05-07

1987-05-26

Bonck, Rodney H.

Machine element or mechanism

Elements

Pitmans and connecting rods

192150, 83543, 83623, F16D 900, F16P 500

Patent

active

046675337

ABSTRACT:
An override for a positive drive mechanism which includes a first bearing block which is fixedly secured to tie rods and a second bearing block which is secured to the tie rods through release and relatch means. The blocks are designed to couple to either a positive drive unit or a unit to be driven by the drive unit. When the driven unit encounters a solid obstruction, release and relatch means associated with the second bearing block will permit the tie rods to slide within the second bearing block, thereby allowing the driven unit to stop. The override mechanism is advantageous in that within a relatively small physical size when a high maximum preselected load in the mechanism is attained, the mechanism will release and apply no further load to the drive. Very long override strokes can be accommodated after which the device will reset at the end of each stroke.

REFERENCES:
patent: 2327946 (1943-08-01), Ward
patent: 2516642 (1950-07-01), Murphy
patent: 2775137 (1956-12-01), Chung
patent: 4012155 (1977-03-01), Morris

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