Title:
【発明の名称】回転ドラグ装置の改良
Document Type and Number:
Japanese Patent JPH11512510
Kind Code:
A
Abstract:
The disclosure relates to a rotary drag device having relatively rotatable members one (4) of which has a stack (5) of closely spaced, thin-walled flexible annular plates (20) peripherally mounted thereon to provide annular running faces and a viscous fluid filling the spaces between the plates, and the other (6) of which members has a stack (8) of segmental plates (33) having part-annular running faces interleaved with the annular plates to slide between the plates with relative rotation of the members. Slits (26, 27) in the annular plates permit release of viscous fluid from between the plates as fluid pressure rises ahead of the segmental plates with increasing relative speed between the members. The flexibility of the annular plates allowing the plates to close together accommodating the loss of viscous fluid from between the plates whereby the damping characteristic of the device can vary between viscous drag between the relative running surfaces of the annular and segmental plates at low relative speeds of the members and, with loss of viscous fluid from between the plates, can change to boundary lubrication between the running surfaces of the respective plates at higher relative speeds of rotation of the members.
Inventors:
Lindsey Richard Arthur
Sayer Robin Andrew
Sayer Robin Andrew
Application Number:
JP51249997A
Publication Date:
October 26, 1999
Filing Date:
September 20, 1996
Export Citation:
Assignee:
Vitec Group PLC
International Classes:
F16M11/00; F16F9/12; F16M11/06; (IPC1-7): F16M11/06; F16M11/00
Attorney, Agent or Firm:
Kenji Yoshida (2 outside)