Browse Prior Art Database

Externally Engaged Clutch or Brake

IP.com Disclosure Number: IPCOM000091738D
Original Publication Date: 1968-May-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Lambiotte, JC: AUTHOR

Abstract

This clutch can be engaged and set its load in operation in less than 1 degree of rotation of the input shaft. The mechanism is converted to a brake by fixing the output member. Input member 1 and intermediate member 2 are adapted to be driven in the plus omega direction. Members 1 and 2 have coacting surfaces 3a and 3b such that members 1 and 2 can move laterally relative to each other by displacing surfaces 3a and 3b. Member 2 has a disk portion 4. Output member 5 has a disk portion 6 whose outer surface 6a is opposed to outer surface 4a of disk 4 of member 2.

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Externally Engaged Clutch or Brake

This clutch can be engaged and set its load in operation in less than 1 degree of rotation of the input shaft. The mechanism is converted to a brake by fixing the output member. Input member 1 and intermediate member 2 are adapted to be driven in the plus omega direction. Members 1 and 2 have coacting surfaces 3a and 3b such that members 1 and 2 can move laterally relative to each other by displacing surfaces 3a and 3b. Member 2 has a disk portion 4. Output member 5 has a disk portion 6 whose outer surface 6a is opposed to outer surface 4a of disk 4 of member 2.

Member 5 is free to rotate in either direction until a force is applied to member 2 by bringing shoe 7 into contact with shaft portion 8 of member 2. The drag created by shoe 7 causes coacting surfaces 3a and 3b to displace, thus moving member 2 to the right and forcing surface 4a into contact with surface 6a of member 5, thus driving member 5 in the plus omega direction. When shoe 7 is moved out of contact with shaft 8, spring 9, mounted between members 1 and 2, returns surfaces 3a and 3b to the start position causing disk 4 to be moved out of contact with disk 6.

The mechanism is converted to a brake for member 1 by fixing member 5 to maintain disk 6 stationary. When shoe 7 contacts shaft 8 of member 2 and forces disk 4 into contact with fixed disk 6, a braking action on member 1 results.

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