Rotary shafts – gudgeons – housings – and flexible couplings for ro – Overload release coupling – Torque transmitted via frangible element
Reexamination Certificate
2001-02-27
2002-12-10
Browne, Lynne H. (Department: 3679)
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Overload release coupling
Torque transmitted via frangible element
C464S901000, C464S137000, C403S326000
Reexamination Certificate
active
06491587
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates generally to the field of reciprocating driven spindle devices, and more particularly to an improved protective device for releasing a driven probe upon encountering a foreign object presenting a lateral force which might damage the spindle.
It is known in the art to provide so-called wrist protection devices for end of arm robotic tooling in the event of an inadvertent collision which deflects and possibly damages the spindle. Such devices are of relatively large diameter, and are not suitable where the probe diameter is relatively small, in the order of one quarter of an inch, as is employed in pick and place mechanisms, and the like.
SUMMARY OF THE INVENTION
Briefly stated, the invention contemplates the provision of an improved device of the class described which enables protection against damage of relatively small diameter driven spindles. To this end, the disclosed embodiment comprises a spindle adaptor element which connects to a driven shaft, and forms a resiliently-engageable socket cooperating with a probe element having an upper end forming a corresponding socket-engaging element. The device may include corresponding detent means for predetermined relative rotational positioning, as well as the transmission of torque through the engaged parts.
REFERENCES:
patent: 367578 (1887-08-01), Babb
patent: 559924 (1896-05-01), Arnold
patent: 2610879 (1952-09-01), Pope
patent: 2644475 (1953-07-01), Morton
patent: 4012155 (1977-03-01), Morris
patent: 5143500 (1992-09-01), Schuring et al.
Browne Lynne H.
Temko Charles E.
Thompson Kenn
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