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Patent Searching and Data


Title:
BRAKE DEVICE, CONTROL DEVICE, OPERATING FORCE REGULATOR AND OPTICAL DEVICE
Document Type and Number:
Japanese Patent JP3269260
Kind Code:
B2
Abstract:

PURPOSE: To obtain a brake device which is simple and low-priced in its constitution in a braking force variable brake device, by which the braking torque at the same rotating speed can be varied, and which is suitable for constant- speed rotation.
CONSTITUTION: A brake device includes a cylindrical member 1 where a Newtonian liquid is applied to the inside surface or the outside surface, and a member 3 disposed on the inside or outer periphery of the cylindrical member 1, wherein a part or the whole of the member 3 is brought into contact with the cylindrical member 1 through the liquid to generate the braking force depending on the rotating speed of the cylindrical member, and the space between the cylindrical member 1 and a part or the whole of the member 1 is varied to change the contact area, thereby varying the braking force.


Inventors:
Fujiike, Hiroshi
Application Number:
JP1994000127044
Publication Date:
March 25, 2002
Filing Date:
May 16, 1994
Export Citation:
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Assignee:
CANON INC
International Classes:
G02B7/08; B60T10/04; F16D57/00; G05G1/08; G05G5/00; H02K7/102; (IPC1-7): F16D57/00; G02B7/08; G05G1/08; G05G5/00; H02K7/102
Attorney, Agent or Firm:
高梨 幸雄