Reduced stress rotational coupling and a method of using same

Details Reduced stress rotational coupling and a method of using same Reduced stress rotational coupling and a method of using same

2006-10-10

2006-10-10

Binda, Greg (Department: 3679)

Rotary expansible chamber devices

Positively actuated abutment

Cam actuated

C403S381000

Reexamination Certificate

active

07118360

ABSTRACT:
A rotational coupling couples a rotor, or driven member, to a rotating shaft. The rotational coupling reduces stress by distributing a driving force from a coupling over a planar contact area on the rotor. The rotor is coupled to a rotating shaft via a coupling that can include a pin. The coupling includes a drive surface that is connected to, but radially separated from, the rotating shaft. An inner surface of the rotor includes at least one contact surface, and the coupling includes at least one drive surface. A portion of the coupling including the drive surface can be comprised of a stronger material than a portion of the rotor that includes the contact surface. The drive surface and the contact surface contacting over a planar contact area, over which the driving force from the shaft is distributed.

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