Patent US3636786A successfully refreshed from Google Patents.
US3636786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive adjustment for fixed center drive
Assignee: Fedders Corp
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Filing: 1970-09-03
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Granted: 1972-01-25
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Expires: 1990-09-03
Abstract
Abstract A motor, having a shaft, is pivotally mounted for rotation about an axis parallel to but displaced from the axis of the shaft. First and second pulleys are mounted on said shaft for driving a pair of rotatable devices through first and second belts respectively. A spring mounted idler applies a predetermined tension to the second belt and a stop member is mounted to the motor for preventing the idler from contacting the second pulley when the second belt is either broken or removed. The stop is positioned so that the idler exerts upon the motor a predetermined moment about the axis when the idler contacts the stop and said moment establishes the proper tension of the first belt.
Inventors
- 👤 Leo V Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:10
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/08; F16H7/10; F16H7/12; F16H7/1254; F16H7/1281; F16H2007/0802; F16H2007/0804
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
168 words
In combination with a belt drive system having a single motor driving two devices through first and second belt drives each having a pair of pulleys and a belt, the improvement which comprises: means for mounting said motor for free movement in directions to vary the distance between the pulleys of at least the first belt drive; means for securing said motor in a selected position; spring means for applying a predetermined tension to the belt of the second belt drive; and a stop member mounted to said motor for intercepting said spring means and absorbing the force therefrom when the second belt upon which it acts is removed, the stop member being positioned so that a predetermined tension is applied to the belt of the first belt drive when the motor is free to move, whereby the first belt is under a predetermined tension which is maintained when the motor is secured by said securing means and the second belt is properly tensioned by the spring means.
Claim 2
Dependent Claim
168 words
In combination with a belt drive system having a single motor driving two devices through first and second belt drives each having a pair of pulleys and a belt, the improvement which comprises: means for mounting said motor for free movement in directions to vary the distance between the pulleys of at least the first belt drive; means for securing said motor in a selected position; spring means for applying a predetermined tension to the belt of the second belt drive; and a stop member mounted to said motor for intercepting said spring means and absorbing the force therefrom when the second belt upon which it acts is removed, the stop member being positioned so that a predetermined tension is applied to the belt of the first belt drive when the motor is free to move, whereby the first belt is under a predetermined tension which is maintained when the motor is secured by said securing means and the second belt is properly tensioned by the spring means.
Claim 3
Dependent Claim
35 words
A system as described in claim 1, wherein the stop member is also positioned to prevent said spring means from contacting the pulley of the second belt drive when the second belt breaks during operation.
Claim 4
Dependent Claim
41 words
A belt drive system as described in claim 1, wherein the motor is slidably mounted by said mounting means to allow for free movement in a direction to vary the distance between the pulleys of at least the first belt drive.
Claim 5
Dependent Claim
31 words
A belt drive system as described in claim 1, wherein the motor is pivotally mounted for rotation about an axis parallel to but displaced from a shaft axis of the motor.
Claim 6
Dependent Claim
26 words
A belt drive system as described in claim 4, wherein the rotation axis is displaced from a line between the pulleys of the first belt drive.
Claim 7
Dependent Claim
64 words
A belt drive system as described in claim 4, wherein the stop member is positioned so that a predetermined moment is applied to the motor about the rotation axis when the belt of the second belt drive is removed, said moment establishing the proper tension on the belt of the first belt drive when the motor is free to rotate about the rotation axis.
Claim 8
Dependent Claim
65 words
A belt drive system as described in claim 1, wherein the spring means comprises: a spring metal arm having a known spring constant and a fixed end portion; a bifurcated mounting portion formed on the other end of said spring arm; and an idler pulley rotatably mounted within the bifurcated portion of the arm and positioned to contact the belt of the second belt drive.
Claim 9
Dependent Claim
137 words
A belt drive system, comprising: a motor having a rotating shaft; a pair of drive pulleys mounted to said shaft; a pair of drive pulleys mounted to drive devices; a pair of belts connecting the drive and driven pulleys; means for pivotally mounting said motor for rotation about an axis parallel to the shaft axis; means for securing said motor in a selected position; spring means for applying a predetermined tension to one of said belts; and a stop member fixedly connected to the motor for intercepting said spring means when the belt upon which it acts is removed, the stop member being positioned so that the spring means exerts a predetermined moment on the motor about the rotation axis, said moment establishing the proper tension on the other belt when the motor is free to rotate.
Claim 10
Dependent Claim
137 words
A belt drive system, comprising: a motor having a rotating shaft; a pair of drive pulleys mounted to said shaft; a pair of drive pulleys mounted to drive devices; a pair of belts connecting the drive and driven pulleys; means for pivotally mounting said motor for rotation about an axis parallel to the shaft axis; means for securing said motor in a selected position; spring means for applying a predetermined tension to one of said belts; and a stop member fixedly connected to the motor for intercepting said spring means when the belt upon which it acts is removed, the stop member being positioned so that the spring means exerts a predetermined moment on the motor about the rotation axis, said moment establishing the proper tension on the other belt when the motor is free to rotate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |