§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
EP0067548A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Vibration suppressor

Assignee: ML Aviation Ltd
•
Filing: 1982-05-19
•
Granted: —
•
Expires: 2002-05-19
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Unwanted oscillatory forces are counteracted by means of a vibration generating unit comprising a vibration generator in the form of an electric motor 1 which is itself caused to vibrate as a result of the reaction between a stationary swash plate 6 and a co-operating follower 5 driven by the motor 1. A sensing device in the form of an accelerometer mounted in the base of the unit responds to the amplitude, frequency and phase of an oscillatory force applied to the unit and provides automatic control to the motor 1 in respect of these parameters in such a way as to counterbalance the effects of the oscillatory force, the control in respect of amplitude of vibration being by adjustment of the angle of a mounting 10 for the swash plate 6 by means of a servo motor 18 driving a worm 15 meshing with a toothed sector 16 forming part of the mounting 10.

Inventors

  • 👤 Reginald Gene Austin

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 17:43
CPC Classifications
G; G05; G05D; G05D19/00; G05D19/02; B; B64; B64C; B64C27/00; B64C27/001; F; F16; F16F; F16F7/00; F16F7/10; B64C2027/004; B64C2027/005

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 57 words
A vibration generating unit comprising a vibration generator and one or more sensing devices responsive to the amplitude, frequency and phase of an oscillatory force applied to the unit and connected to provide automatic control to the vibration generator in respect of these parameters in such a way as to counterbalance the effects of the oscillatory force.
Claim 2
Dependent Claim 57 words
A vibration generating unit comprising a vibration generator and one or more sensing devices responsive to the amplitude, frequency and phase of an oscillatory force applied to the unit and connected to provide automatic control to the vibration generator in respect of these parameters in such a way as to counterbalance the effects of the oscillatory force.
Claim 3
Dependent Claim 25 words
A vibration generating unit according to claim 1 in which the vibration generator is driven by an electric motor which is itself caused to vibrate.
Claim 4
Dependent Claim 25 words
A vibration generating unit according to claim 2 in which the vibration is generated by the reaction between a swash plate and a co-operating follower.
Claim 5
Dependent Claim 40 words
A vibration generating unit according to claim 3 in which the swash plate is stationary and has a mounting of which the angle is adjustable in response to the output of the sensing device to control the amplitude of vibration.
Claim 6
Dependent Claim 43 words
A vibration generating unit according to any one of claims 2 to 4 in which there are two sensing devices, each in the form of an accelerometer, on mounted on the electric motor and the other mounted on a housing for the unit.
Claim 7
Dependent Claim 28 words
A vibration generating unit according to claim 5 and including means for comparing the outputs of the sensing devices and for providing control signals to the electric motor.

References Cited (Backward Citations)

US3635429A Cited
FR2415330A1 Cited
EP0008585A1 Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag