Patent US2537165A successfully refreshed from Google Patents.
Patent US3691843A successfully refreshed from Google Patents.
US3691843A
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US
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Condition responsive apparatus
Assignee: Dresser Industries Inc
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Filing: 1970-09-11
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Granted: 1972-09-19
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Expires: 1990-09-11
Abstract
Abstract Apparatus responsive to sensed magnitude of a variable condition input to provide an output drive for operative connection to a recorder, counter, or the like. The apparatus includes a control operative in response to condition changes by discreet bidirectional movement from a force balance null position at which sensing means for emitting correlated bidirectional signals to the output drive are at a nonemitting signal level.
Inventors
- 👤 Joseph E Gorgens
- 👤 William A Heske
- 👤 Randall Goff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:21
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/02; G01R17/06; G01R17/08
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
256 words
A fluid pressure sensitive condition responsive apparatus comprising; control means adapted for movement in one direction from a null-position in response to a force change from an increasing fluid pressure and adapted for movement in another direction from a null-position in response to a force chanGe from a decreasing fluid pressure, sensing means comprising a pair of spaced apart sensing elements located defining a null-position therebetween for said control means to move relative thereto and operable to provide a first differential signal in response to movement of said control means in said one direction away from said null-position and a second differential signal in response to movement of said control means in said another direction away from said null-position, differential amplifier means receiving signals from said sensing means to emit an amplified signal correlated and proportional thereto, bidirectional drive means receiving signals from said amplifier and adapted to generate a motion force in a first direction in response to a received signal correlated with said first signal of said sensing means and a motion force in an opposite direction in response to a received signal correlated with said second signal of said sensing means, feedback means including substantially linear spring means connected between said bidirectional drive means and said control means, said feedback means being responsive to said generated motion forces to return said control means to said null-position in opposition to the force change incurred thereby, and output means operable in conjunction with said feedback means for connection to external means to be operative thereby.
Claim 2
Dependent Claim
256 words
A fluid pressure sensitive condition responsive apparatus comprising; control means adapted for movement in one direction from a null-position in response to a force change from an increasing fluid pressure and adapted for movement in another direction from a null-position in response to a force chanGe from a decreasing fluid pressure, sensing means comprising a pair of spaced apart sensing elements located defining a null-position therebetween for said control means to move relative thereto and operable to provide a first differential signal in response to movement of said control means in said one direction away from said null-position and a second differential signal in response to movement of said control means in said another direction away from said null-position, differential amplifier means receiving signals from said sensing means to emit an amplified signal correlated and proportional thereto, bidirectional drive means receiving signals from said amplifier and adapted to generate a motion force in a first direction in response to a received signal correlated with said first signal of said sensing means and a motion force in an opposite direction in response to a received signal correlated with said second signal of said sensing means, feedback means including substantially linear spring means connected between said bidirectional drive means and said control means, said feedback means being responsive to said generated motion forces to return said control means to said null-position in opposition to the force change incurred thereby, and output means operable in conjunction with said feedback means for connection to external means to be operative thereby.
Claim 3
Dependent Claim
32 words
A condition responsive apparatus according to claim 1 wherein said control means includes a variable condition responsive Bourdon tube connected to produce movement thereof in response to changes in the variable condition.
Claim 4
Dependent Claim
34 words
A condition responsive apparatus according to claim 1 wherein said sensing means comprises a linear differential transducer energized to its respective signal providing levels in response to the respective movement of said control means.
Claim 5
Dependent Claim
32 words
A condition responsive apparatus according to claim 1 wherein said sensing means comprises dual elements separately energized to their signal providing levels in response to the respective movement of said control means.
Claim 6
Dependent Claim
30 words
A condition responsive apparatus according to claim 4 wherein said control means comprises a slitted vane movable interposed between a light source and said dual elements which comprise photoelectric cells.
Claim 7
Dependent Claim
27 words
A condition responsive apparatus according to claim 1 wherein said sensing means comprises a pneumatic detector means and said bidirectional drive means comprises a reversible air motor.
Claim 8
Dependent Claim
49 words
A condition responsive apparatus according to claim 6 wherein said pneumatic detector means comprises a first pair of aligned spaced apart nozzles adapted for connection to an air supply, and said control means comprises a vane member adapted for movement in the gap between said spaced apart aligned nozzles.
Claim 9
Dependent Claim
74 words
A condition responsive apparatus according to claim 7 wherein said vane member is adapted for longitudinal movement between said aligned nozzles and said pneumatic means further comprises pneumatic relay means responsive to pressure changes in said nozzles produced by movement of said vane member and adapted to provide said first signal for driving said reversible air motor in one direction and said second signal for driving said reversible air motor in the opposite direction.
Claim 10
Dependent Claim
26 words
A condition responsive apparatus according to claim 7 wherein said feedback means comprises a linear spring connected between said vane member and said reversible air motor.
Claim 11
Dependent Claim
34 words
A condition responsive apparatus according to claim 9 wherein said linear spring is attached to a threaded support member which threadedly engages a threaded drive member connected for rotation with said reversible air motor.
Claim 12
Dependent Claim
111 words
A condition responsive apparatus according to claim 7 wherein said pneumatic detector means further comprises a second pair of spaced apart aligned nozzles adjacent said first pair of aligned nozzles and adapted for connection to an air supply, said vane member is adapted for transverse movement in the gaps between said firSt and second pairs of aligned nozzles and said pneumatic means further comprises pneumatic relay means responsive to pressure changes in said nozzles produced by movement of said vane member and adapted to provide said first signal for driving said reversible air motor in one direction and said second signal for driving said reversible air motor in the opposite direction.
Claim 13
Dependent Claim
32 words
A condition responsive apparatus according to claim 11 wherein said pneumatic detector means comprises a pneumatic amplifier means for amplifying said first and second signals before application to said reversible air motor.
Claim 14
Dependent Claim
35 words
A condition responsive apparatus according to claim 1 wherein said control means comprises bidirectional rotational means and said feedback means comprises a torsional spring means connected between said control means and said bidirectional drive means.
Claim 15
Dependent Claim
27 words
A condition responsive apparatus according to claim 1 wherein said sensing means comprises an electrical detector means and said bidirectional drive means comprises a reversible electric motor.
Claim 16
Dependent Claim
72 words
A condition responsive apparatus according to claim 14 wherein said control means comprises a magnetic element adapted for movement in response to the variable condition, and said electrical detector means comprises a normally balanced circuit adapted in response to movement of said magnetic element to provide said first signal for driving said reversible electric motor in one direction and said second signal for driving said reversible electric motor in the opposite direction.
Claim 17
Dependent Claim
51 words
A condition responsive apparatus according to claim 1 wherein said control means comprises a differential pressure responsive device adapted for fluid communication connection with regions of different pressure, and a movable member adapted to provide said bidirectional movement in response to changes in the differential pressure existing in the connected regions.
Claim 18
Dependent Claim
27 words
A condition responsive apparatus according to claim 16 wherein said sensing means comprises a pneumatic detector means and said bidirectional drive means comprises a reversible air motor.
Claim 19
Dependent Claim
49 words
A condition responsive apparatus according to claim 17 wherein said pneumatic detector means comprises a first pair of aligned spaced apart nozzles adapted for connection to an air supply, and said movable member comprises a vane member adapted for movement in the gap between said spaced apart aligned nozzles.
Claim 20
Dependent Claim
74 words
A condition responsive apparatus according to claim 18 wherein said vane member is adapted for longitudinal movement between said aligned nozzles and said pneumatic means further comprises pneumatic relay means responsive to pressure changes in said nozzles produced by movement of said vane member and adapted to provide said first signal for driving said reversible air motor in one direction and said different signal for driving said reversible air motor in the opposite direction.
Claim 21
Dependent Claim
174 words
A condition responsive apparatus comprising; a light source, a vane having slit and adapted for bidirectional movement from a null-position past said light source in response to a variable condition, dual photoelectric cells separately energized to their signal providing levels by light received from said source through said vane slit in response to appropriate movement of said vane, said cells providing a first signal in response to movement of said vane in one direction from said null-position and a second signal in response to movement of said vane in the other direction from said null-position, bidirectional drive means actuated by said cell signals and adapted to generate one motion in response to said first signal and a different motion in response to said second signal, feedback means comprising a linear spring connected between said bidirectional drive means and said vane, said feedback means being responsive to said generated motion to return said vane to said null-position, and output means actuated concomitantly with said feedback means for connection to external means to be operAtive thereby.
Claim 22
Dependent Claim
174 words
A condition responsive apparatus comprising; a light source, a vane having slit and adapted for bidirectional movement from a null-position past said light source in response to a variable condition, dual photoelectric cells separately energized to their signal providing levels by light received from said source through said vane slit in response to appropriate movement of said vane, said cells providing a first signal in response to movement of said vane in one direction from said null-position and a second signal in response to movement of said vane in the other direction from said null-position, bidirectional drive means actuated by said cell signals and adapted to generate one motion in response to said first signal and a different motion in response to said second signal, feedback means comprising a linear spring connected between said bidirectional drive means and said vane, said feedback means being responsive to said generated motion to return said vane to said null-position, and output means actuated concomitantly with said feedback means for connection to external means to be operAtive thereby.
Claim 23
Dependent Claim
22 words
A condition responsive apparatus according to claim 20 including compensating means to offset spring non-linearity through changes in the helix angle thereof.
Claim 24
Dependent Claim
28 words
A condition responsive apparatus according to claim 20 wherein said output means is connected to a digital counter readout means adapted to record movement of said drive means.
Claim 25
Dependent Claim
49 words
A condition responsive apparatus according to claim 20 in which the signals provided by said cells are differential signals and there is included a differential amplifier to receive said cell signals and emit an amplified signal correlated and proportional to said received signals for actuating said bi-directional drive means.
Claim 26
Dependent Claim
22 words
A condition responsive apparatus according to claim 23 including compensating means to offset spring non-linearity through changes in the helix angle thereof.
Claim 27
Dependent Claim
28 words
A condition responsive apparatus according to claim 23 wherein said output means is connected to a digital counter readout means adapted to record movement of said drive means.
Claim 28
Dependent Claim
18 words
A condition responsive apparatus according to claim 26 in which said stabilizer circuit comprises a phase lag network.
Claim 29
Dependent Claim
187 words
A condition responsive apparatus comprising; a light source, a vane having a slit and adapted for bidirectional movement from a null-position past said light source in response to a variable condition, dual photoelectric cells separately energized to their signal providing levels by light received from said source through said vane slit in response to appropriate movement of said vane, said cells being connected in a normally balanced circuit and providing a first signal in response to movement of said vane in one direction from said null-position and a second signal in response to movement of said vane in the other direction form said null-position, an amplifier including a conjoined stabilizer circuit and receiving said cell signals to emit amplified signals thereof, bidirectional drive means actuated by said amplifier signals and adapted to generate one motion in response to an amplified second signal, feedback means connected between said bidirectional drive means and said vane, said feedback means being responsive to said generated motion to return said vane to said null-position, and output means actuated concomitantly with said feedback means for connection to external means to be operative thereby.
Claim 30
Dependent Claim
187 words
A condition responsive apparatus comprising; a light source, a vane having a slit and adapted for bidirectional movement from a null-position past said light source in response to a variable condition, dual photoelectric cells separately energized to their signal providing levels by light received from said source through said vane slit in response to appropriate movement of said vane, said cells being connected in a normally balanced circuit and providing a first signal in response to movement of said vane in one direction from said null-position and a second signal in response to movement of said vane in the other direction form said null-position, an amplifier including a conjoined stabilizer circuit and receiving said cell signals to emit amplified signals thereof, bidirectional drive means actuated by said amplifier signals and adapted to generate one motion in response to an amplified second signal, feedback means connected between said bidirectional drive means and said vane, said feedback means being responsive to said generated motion to return said vane to said null-position, and output means actuated concomitantly with said feedback means for connection to external means to be operative thereby.
Claim 31
Dependent Claim
18 words
A condition responsive apparatus according to claim 26 in which said stabilizer circuit comprises a phase lead network.
Claim 32
Dependent Claim
18 words
A condition responsive apparatus according to claim 26 in which said stabilizer circuit comprises a phase lead-lag network.
Claim 33
Dependent Claim
27 words
A condition responsive apparatus according to claim 26 in which said amplifier emits an amplified signal correleated and proportional to the signal differential from said photoelectric cells.
Claim 34
Dependent Claim
28 words
A condition responsive apparatus according to claim 26 wherein said output means is connected to a digital counter readout means adapted to record movement of said drive means.
Claim 35
Dependent Claim
39 words
A condition responsive apparatus according to claim 26 in which the signals provided by said cells are differential signals and said amplifier is a differential amplifier to emit amplified signals correlated and proportional to the cell signals received thereat.
Claim 36
Dependent Claim
18 words
A condition responsive apparatus according to claim 32 in which said stabilizer circuit comprises a phase lag network.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |