US3572959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling controller
Assignee: Trane US Inc
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Filing: 1969-05-01
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Granted: 1971-03-30
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Expires: 1989-05-01
Abstract
Abstract Covers equipment employing a sensor, such as a magnetic pickup, which senses the speed of the output shaft of a fluid drive apparatus, and determines whether the output shaft speed differs from a predetermined reference speed. If there is a difference or error, a correction signal is generated for correspondingly controlling the fluid drive apparatus to reduce the error signal, step by step, to a substantially zero magnitude. The correction signal, derived from the magnetic pickup which is spaced from but coupled to a gear device on the output shaft, is converted into a series of variable width pulses which are employed for the control function.
Inventors
- 👤 William James Shaughnessy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:46
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/0016; F; F16; F16D; F16D33/00; F16D33/06; F16D33/08; F16D33/14; Y; Y10; Y10S; Y10S60/00; Y10S60/911
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
89 words
Control apparatus for a fluid drive coupled to a load, comprising means for changing the coupling of the fluid drive step by step as the magnitude of the load changes from a predetermined value to return the load to said predetermined value said means comprising means coupled to said fluid drive and responsive to changes in the magnitude of the load to produce pulses of a magnitude corresponding to the changes in the load magnitude for maintaining substantially constant the power supplied through the fluid drive to the load.
Claim 2
Dependent Claim
89 words
Control apparatus for a fluid drive coupled to a load, comprising means for changing the coupling of the fluid drive step by step as the magnitude of the load changes from a predetermined value to return the load to said predetermined value said means comprising means coupled to said fluid drive and responsive to changes in the magnitude of the load to produce pulses of a magnitude corresponding to the changes in the load magnitude for maintaining substantially constant the power supplied through the fluid drive to the load.
Claim 3
Dependent Claim
73 words
Control apparatus for a fluid drive coupled to a load, comprising means for changing the coupling of the fluid drive step by step as the magnitude of the load changes from a predetermined value to return the load to said predetermined value, said means comprising an electromagnetic structure having a controlled moving element which changes the rotating vortex of the fluid drive step by step to change the power delivered to the load.
Claim 4
Dependent Claim
73 words
Control apparatus for a fluid drive coupled to a load, comprising means for changing the coupling of the fluid drive step by step as the magnitude of the load changes from a predetermined value to return the load to said predetermined value, said means comprising an electromagnetic structure having a controlled moving element which changes the rotating vortex of the fluid drive step by step to change the power delivered to the load.
Claim 5
Dependent Claim
51 words
Control apparatus for a fluid drive coupled to a load according to claim 2, in which the coupling changing means generates pulses of a magnitude and polarity which are responsive to load changes, and means responsive to said pulses to vary the rotating vortex of the fluid drive step by step.
Claim 6
Dependent Claim
84 words
Control apparatus for a moving load comprising a fluid drive coupled to the load by a shaft, means responsive to the speed of the shaft to generate a first plurality of pulses, means responsive to said first plurality of pulses to produce a second plurality of pulses corresponding to changes required to return the power developed by the load to a predetermined value, and means responsive to the second plurality of pulses to change the rotating vortex of the fluid drive step by step.
Claim 7
Dependent Claim
84 words
Control apparatus for a moving load comprising a fluid drive coupled to the load by a shaft, means responsive to the speed of the shaft to generate a first plurality of pulses, means responsive to said first plurality of pulses to produce a second plurality of pulses corresponding to changes required to return the power developed by the load to a predetermined value, and means responsive to the second plurality of pulses to change the rotating vortex of the fluid drive step by step.
Claim 8
Dependent Claim
52 words
Control apparatus for a moving load according to claim 4 in which the means for generating the first plurality of pulses comprises a toothed gear and a coil coupled to said gear, the magnetic field of which changes as the rate at which the teeth of the gear move past said coil.
Claim 9
Dependent Claim
57 words
Control apparatus for a moving load according to claim 4 in which the means responsive to the second plurality of pulses comprises an electromagnetic structure having an armature which moves in one direction to change the rotating vortex in one direction and which moves in the opposite direction to change the rotating vortex in the opposite direction.
Claim 10
Dependent Claim
109 words
Apparatus for controlling a power-supplied load comprising a drive coupled between the power source and the load, sensing means for producing a first plurality of pulses corresponding to changes in the operating property of the load, means for converting said first plurality of pulses to a continuous voltage representation of said pulses, means responsive to the difference between the continuous voltage and a predetermined magnitude to produce a second plurality of pulses which are poled to correspond to the directional change to be made in the operating property of the load, and means responsive to said second plurality of pulses to directionally change the operating property of the load.
Claim 11
Dependent Claim
109 words
Apparatus for controlling a power-supplied load comprising a drive coupled between the power source and the load, sensing means for producing a first plurality of pulses corresponding to changes in the operating property of the load, means for converting said first plurality of pulses to a continuous voltage representation of said pulses, means responsive to the difference between the continuous voltage and a predetermined magnitude to produce a second plurality of pulses which are poled to correspond to the directional change to be made in the operating property of the load, and means responsive to said second plurality of pulses to directionally change the operating property of the load.
Claim 12
Dependent Claim
42 words
Apparatus for controlling a power-supplied load according to claIm 7 in which the sensing means comprises a rotating mechanical gear coupled to the load and a magnetic detector adjacent to the teeth of the gear to generate pulses as the gear rotates.
Claim 13
Dependent Claim
37 words
Apparatus for controlling a power-supplied load according to claim 7 in which the means responsive to the second plurality of pulses is an electromagnetic structure having a controlled moving element which changes the coupling of the drive.
Claim 14
Dependent Claim
115 words
Apparatus for controlling a load comprising a fluid drive which is coupled to the load by a rotatable shaft, a gear mounted on said shaft, a coil juxtaposed to said gear and producing a first group of pulses corresponding to the changes in the speed of said gear, means for integrating said first group of pulses into a continuous voltage, a comparator for comparing said continuous voltage with a predetermined voltage, means responsive to the departure of the continuous voltage from the predetermined voltage to generate a second plurality of pulses, and an electromagnetic structure having a moving element to change the rotating vortex of the fluid drive according to said second plurality of pulses.
Claim 15
Dependent Claim
115 words
Apparatus for controlling a load comprising a fluid drive which is coupled to the load by a rotatable shaft, a gear mounted on said shaft, a coil juxtaposed to said gear and producing a first group of pulses corresponding to the changes in the speed of said gear, means for integrating said first group of pulses into a continuous voltage, a comparator for comparing said continuous voltage with a predetermined voltage, means responsive to the departure of the continuous voltage from the predetermined voltage to generate a second plurality of pulses, and an electromagnetic structure having a moving element to change the rotating vortex of the fluid drive according to said second plurality of pulses.
Claim 16
Dependent Claim
26 words
Apparatus for controlling a load according to claim 10, in which said predetermined voltage is adjustable to correspond to the predetermined operating property of said load.
Claim 17
Dependent Claim
33 words
Apparatus for controlling a load according to claim 10, in which the moving element of the electromagnetic structure is operated step by step to correspondingly change the rotating vortex of the fluid drive.
Claim 18
Dependent Claim
34 words
Apparatus for controlling a load according to claim 12, in which the moving element of the electromagnetic structure is mechanically coupled to a device for physically changing the rotating vortex of the fluid drive.
Claim 19
Dependent Claim
102 words
Apparatus for controlling the changing operating property of a load, comprising a fluid drive coupled to the load by a rotatable shaft, means responsive to changes in the speed of said shaft to produce a continuous voltage corresponding to said changes in said speed, means responsive to said continuous voltage to generate pulsations of a magnitude and polarity corresponding to the departure of the operating property of said load from a predetermined value, and means responsive to said pulsations to change the rotating vortex of said drive step by step to return said operating property of said load to said predetermined value.
Claim 20
Dependent Claim
102 words
Apparatus for controlling the changing operating property of a load, comprising a fluid drive coupled to the load by a rotatable shaft, means responsive to changes in the speed of said shaft to produce a continuous voltage corresponding to said changes in said speed, means responsive to said continuous voltage to generate pulsations of a magnitude and polarity corresponding to the departure of the operating property of said load from a predetermined value, and means responsive to said pulsations to change the rotating vortex of said drive step by step to return said operating property of said load to said predetermined value.
Claim 21
Dependent Claim
41 words
Apparatus for controlling the changing operating property of a load according to claim 14 in which the means to change the rotating vortex includes an electromechanical element coupled to a device for physically changing the rotating vortex of the fluid drive.
Claim 22
Dependent Claim
78 words
Apparatus for controlling a variable pressure load comprising a fluid drive which is coupled to said load by a rotatable shaft, pressure-sensitive means electrically coupled to said fluid drive and said load and producing pulses responding to changes in the pressure of said load, and means responsive to the departure of the pressure sensed by said pressure sensitive means from a predetermined value to change the pressure of said load to return it substantially to its predetermined value.
Claim 23
Dependent Claim
78 words
Apparatus for controlling a variable pressure load comprising a fluid drive which is coupled to said load by a rotatable shaft, pressure-sensitive means electrically coupled to said fluid drive and said load and producing pulses responding to changes in the pressure of said load, and means responsive to the departure of the pressure sensed by said pressure sensitive means from a predetermined value to change the pressure of said load to return it substantially to its predetermined value.
Claim 24
Dependent Claim
20 words
Apparatus for controlling a variable pressure load according to claim 16 in which the variable pressure load includes a pump.
Claim 25
Dependent Claim
84 words
Apparatus for controlling a fluid-conveying device comprising a fluid drive which is coupled to said fluid conveying device, pressure-sensitive means electrically interposed between said fluid drive and said load and producing pulses responding to the pressure of the fluid conveyed by said device, and means responsive to the departure of the pressure of the conveyed fluid from a predetermined value for electrically controlling the fluid drive so as to return the pressure of the fluid conveyed by said device substantially to its predetermined value.
Claim 26
Dependent Claim
84 words
Apparatus for controlling a fluid-conveying device comprising a fluid drive which is coupled to said fluid conveying device, pressure-sensitive means electrically interposed between said fluid drive and said load and producing pulses responding to the pressure of the fluid conveyed by said device, and means responsive to the departure of the pressure of the conveyed fluid from a predetermined value for electrically controlling the fluid drive so as to return the pressure of the fluid conveyed by said device substantially to its predetermined value.
Claim 27
Dependent Claim
38 words
Apparatus for controlling a fluid conveying device according to claim 18 in which the fluid drive is controlled step by step to return the pressure of the fluid conveyed by the fLuid device substantially to its predetermined value.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |