US3749530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Governor for pneumatic motor
Assignee: Dresser Industries Inc
•
Filing: 1972-01-24
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Granted: 1973-07-31
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Expires: 1992-01-24
Abstract
Abstract A safety governor operable on failure of the primary governor to arrest operation of the motor with which it is associated. An annular spring-washer, that includes weights supported peripherally distributed about its face, is secured to the drive spindle proximately displaced opposite inlet air passages to the motor. In response to centrifugal forces of rotation, the weights bend or deflect the spring-washer in an axial direction increasingly toward the inlet air passages until, at a predetermined overspeed, passage closure is effected interrupting air supply to the motor.
Inventors
- 👤 G Amador
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:02
CPC Classifications
F; F01; F01C; F01C20/00; F01C20/28; F01C20/08; Y; Y02; Y02P; Y02P80/00; Y02P80/10; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/1026; Y10T137/108
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
86 words
The combination of: a. a pneumatic motor having a drive spindle for providing a rotational output; b. inlet means to receive operating air from a supply source for delivery to said motor; and c. governor means located in the delivery path of the air between said inlet means and said motor for limiting operating speed of said motor; d. said governor means being responsive to the rotational speed of said motor to frictionlessly move toward interrupting said delivery path concomitantly with increases in said rotational speed.
Claim 2
Dependent Claim
86 words
The combination of: a. a pneumatic motor having a drive spindle for providing a rotational output; b. inlet means to receive operating air from a supply source for delivery to said motor; and c. governor means located in the delivery path of the air between said inlet means and said motor for limiting operating speed of said motor; d. said governor means being responsive to the rotational speed of said motor to frictionlessly move toward interrupting said delivery path concomitantly with increases in said rotational speed.
Claim 3
Dependent Claim
29 words
The combination according to claim 1 in which said governor means frictionlessly moves to a position effectively shutting said delivery path at a predetermined rotational speed of said motor.
Claim 4
Dependent Claim
41 words
The combination according to claim 1 in which said governor means is secured to the drive spindle of said motor for conjoint rotation therewith and is operatively responsive to the centrifugal forces imposed by the rotational speed rate of said spindle.
Claim 5
Dependent Claim
88 words
The combination according to claim 3 in which said governor means comprises an annular spring-washer proximately displaced from at least the inlet of one air passage to said motor and weight means secured uniformly distributed about the face of said washer, said weights means being responsive to the centrifugal forces of rotation to effect said frictionless movement by deflecting said washer from its proximate displaced relation with said one passage toward a superposed transverse relation therewith at a predetermined rate correlated with the rotational speed of said motor.
Claim 6
Dependent Claim
32 words
The combination according to claim 4 in which said deflection rate is effective for said washer to close said one passage at a predetermined speed of said motor for effecting shutoff thereof.
Claim 7
Dependent Claim
38 words
The combinaTion according to claim 5 in which said annular spring-washer is of frusto-conical cross section and said deflection thereof effects a directional reversal of apex in being deflected from speedless to the shutoff speed of said motor.
Claim 8
Dependent Claim
32 words
The combination according to claim 4 in which said deflection in response to increases in rotational speed directionally corresponds with the flow direction of operating air being delivered to said one passage.
Claim 9
Dependent Claim
103 words
The combination of: a. a pneumatic motor having a drive spindle for providing a rotational output; b. inlet means to receive operating air from a supply source for delivery to said motor; c. a main governor for modulating the flow of said delivered air to effectively limit the operating speed of said motor; and d. a safety governor operative independent of said main governor at a predetermined motor speed exceeding the limit speed to be effected by said main governor; e. said safety governor including operative means frictionlessly effective at said predetermined motor speed to interrupt delivery of operating air to said motor.
Claim 10
Dependent Claim
103 words
The combination of: a. a pneumatic motor having a drive spindle for providing a rotational output; b. inlet means to receive operating air from a supply source for delivery to said motor; c. a main governor for modulating the flow of said delivered air to effectively limit the operating speed of said motor; and d. a safety governor operative independent of said main governor at a predetermined motor speed exceeding the limit speed to be effected by said main governor; e. said safety governor including operative means frictionlessly effective at said predetermined motor speed to interrupt delivery of operating air to said motor.
Claim 11
Dependent Claim
56 words
The combination according to claim 8 in which the operative means of said safety governor is located in the delivery path of the air between said inlet means and said motor and is responsive to the rotational speed of said motor to frictionlessly move toward interrupting said delivery path concomitantly with increases in said rotational speed.
Claim 12
Dependent Claim
43 words
The combination according to claim 9 in which said safety governor operative means is secured to the drive spindle of said motor for conjoint rotation therewith and is operatively responsive to the centrifugal forces imposed by the rotational speed rate of said spindle.
Claim 13
Dependent Claim
90 words
The combination according to claim 10 in which said safety governor operative means comprises an annular spring-washer proximately displaced from at least the inlet of one air passage to said motor and weight means secured uniformly distributed about the face of said washer, said weights means being responsive to the centrifugal forces of rotation to effect said frictionless movement by deflecting said washer from its proximate displaced relation with said one passage toward a superposed transverse relation therewith at a predetermined rate correlated with the rotational speed of said motor.
Claim 14
Dependent Claim
26 words
The combination according to claim 11 in which said deflection rate is effective for said washer to close said one passage at said predetermined motor speed.
Claim 15
Dependent Claim
37 words
The combination according to claim 12 in which said annular spring-washer is of frusto-conical cross section and said deflection thereof effects a directional reversal of apex in being deflected from zero motor speed to said predetermined motor.
Claim 16
Dependent Claim
32 words
The combination according to claim 11 in which said deflection in response to increases in rotational speed directionally corresponds with the flow direction of operating air being delivered to said one passage.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |