US3575343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condition responsive parameter control means
Assignee: Robertshaw Controls Co
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Filing: 1969-12-15
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Granted: 1971-04-20
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Expires: 1989-12-15
Abstract
Abstract A unitary, multiple diaphragm structure is provided which includes integral valve means and flow passages, the structure being substantially entirely composed of a flexible resilient material. Additional rigid inserts are integrally molded into the basic structure to provide additional valving and seating arrangements for desired functional adaptability. The diaphragm structure is combined with hollow housing structures comprised of stacked plates or the like for mounting the peripheral portions of the multiple diaphragms of the unitary structure. Selective porting and pressure connections in the housing structures effect a family of differential pressure responsive modules or devices such as relays, comparators, and the like. A simplified temperature to pressure transducer is provided in which a compound bimetal spring selectively retains a spherical valve in an exhaust port to provide a modulated pressure output as a function of temperature changes. The transducer and family of differential pressure responsive modules are combined to provide a plurality of parameter control systems having a wide variety of operating modes. Several of the systems are convertible from one operating mode to another by merely changing the supply pressure magnitudes. The transducer is characterized by the fact that it requires no changeover adjustment to adapt it to the multiple modes of the systems.
Inventors
- 👤 Kenneth G Kreuter
- 👤 Klaus P Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:44
CPC Classifications
F; F24; F24F; F24F11/00; F15; F15C; F15C3/00; F24F11/70; F24F11/80; F24F11/83; F24F11/84; F24F11/88; G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0672; G05D16/14; G05D16/18; G05D16/185; F24F11/30; F24F11/72; F24F11/74; F24F2110/00; F24F2110/10; F24F2221/00; F24F2221/54; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2562
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
175 words
Control means providing control pressure outputs for a plurality of operating modes in a parameter control system in response to a like plurality of respective main supply pressure magnitudes and an input pressure variable from a fiXed mode parameter-to-pressure transducer means comprising, main supply pressure means selectively providing a plurality of supply pressure magnitudes; pressure regulator means actuated by said supply pressure means providing a selected set point pressure in each of said operating modes of said control means; parameter-topressure transducer means operating in a fixed mode of response and providing a functionally related input pressure variable in response to an ambient parameter; comparator relay means including input means respectively receiving a selected set point pressure and said input pressure variable and providing a control pressure output as a function of the differential therebetween; and supply pressure responsive diverting means selectively transmitting said selected set point pressure to said comparator relay effecting a predetermined operating mode in said comparator relay and said control means in response to a respectively predetermined magnitude of said supply pressure.
Claim 2
Dependent Claim
175 words
Control means providing control pressure outputs for a plurality of operating modes in a parameter control system in response to a like plurality of respective main supply pressure magnitudes and an input pressure variable from a fiXed mode parameter-to-pressure transducer means comprising, main supply pressure means selectively providing a plurality of supply pressure magnitudes; pressure regulator means actuated by said supply pressure means providing a selected set point pressure in each of said operating modes of said control means; parameter-topressure transducer means operating in a fixed mode of response and providing a functionally related input pressure variable in response to an ambient parameter; comparator relay means including input means respectively receiving a selected set point pressure and said input pressure variable and providing a control pressure output as a function of the differential therebetween; and supply pressure responsive diverting means selectively transmitting said selected set point pressure to said comparator relay effecting a predetermined operating mode in said comparator relay and said control means in response to a respectively predetermined magnitude of said supply pressure.
Claim 3
Dependent Claim
128 words
The invention defined in claim 1, wherein said supply pressure means provides first and second supply pressure magnitudes corresponding to first and second operating modes, respectively, for said control means; wherein said pressure regulator means provides a single set point pressure common to both said operating modes; and wherein said diverting means comprises first and second diverting relay modules alternately transmitting, respectively, said set point pressure and said input pressure variable to a predetermined respectively associated one of said input means of said comparator relay means in response to a change in said supply pressure from said first to said second magnitude thereof and vice versa, thereby effecting first and second operating modes in said control means in response to said first and second supply pressure magnitudes, respectively.
Claim 4
Dependent Claim
115 words
The invention defined in claim 1, wherein said supply pressure means provides first and second supply pressure magnitudes corresponding to first and second operating modes, respectively, for said control means; wherein said pressure regulator means provides first and second set point pressures, respectively, for said first and second operating modes; and wherein said diverting means comprises a diverting relay module alternately transmitting said first and second set point pressures to a predetermined one of said input means of said comparator relay means in response to said first and second supply pressure magnitudes, respectively, thereby effecting first and second operating modes in said control means in response to said first and second supply pressure magnitudes, respectively.
Claim 5
Dependent Claim
219 words
The invention defined in claim 1, wherein said supply pressure means provides first and second supply pressure magnitudes corresponding to first and second operating modes, respectively, for said control means; wherein said pressure regulator means provides first and second set point pressures, respectively, for said first and second operating modes; and wherein said diverting means comprises first and second diverting relay modules including biasing means constraining said diverting relay means to effect one of said operating modes corresponding to the lesser of said supply pressure magnitudes and supply pressure responsive means overriding said biasing means and constraining said diverting relay means to effect the other of said operating modes in response to the greater of said supply pressure magnitudes, said first relay module being interconnected with said main supply pressure means and transmitting supply pressure to said supply pressure responsive means in said second relay module and including manual override means precluding said greater supply pressure magnitude from overriding said biasing means in said first and second relay modules and constraining said modules to effect said one of said operating modes, and said second relay modules selectively interconnecting said first and second set point pressure with said selected one of said Input means of said comparator relay as dictated by said supply pressure magnitudes and said manual override means.
Claim 6
Dependent Claim
186 words
The invention defined in claim 1, wherein said parameter-to-pressure transducer comprises a base, a pressure chamber in said base, said pressure chamber including input, bleed and output port means, said input port means including flow restrictor means and adapted to be connected therethrough to a source of supply pressure, and said bleed port means including a valve seat externally of said pressure chamber, a bleed valve comprising a free valve body operatively engaged with said valve seat, first elongated parameter distortable means secured to said base over said valve seat and being so shaped and so proportioned as to permit said valve body to extend therethrough, and second elongated parameter distortable means coterminous with and having its ends engaged with the ends of said first distortable means engageable intermediate its ends with said valve body, said first and second distortable means being distortable in opposition in response to a given parameter variation whereby said valve body is selectively constrained by said second distortable means, as a function of said parameter variation, toward said valve seat in opposition to the pressure acting thereon in said bleed port.
Claim 7
Dependent Claim
162 words
The invention defined in claim 1, wherein said comparator relay means comprises housing means, multiple diaphragm means including a common body portion in said housing defining displaceable wall pressure chambers therein, said input means being interconnected through said housing means with preselected ones of said pressure chambers and said integral body portion being displaceable as a function of said differential between said input pressure variable and said set point pressure, a control pressure output, and control pressure modulating valve means actuated in response to a displacement of said integral body portion; and wherein said control means further includes throttling range control means comprising displaceable means in said housing of said relay means constraining said body portion to a predetermined quiescent position and effecting a predetermined change in the effective area of said diaphragm means and the proportionate response of said relay means to a given change in said input pressure variable, thereby precluding the need for compensating adjustments of said transducer means.
Claim 8
Dependent Claim
219 words
Control means effecting multiple set point parameter control and providing a control pressure output in response to a sensed parameter input comprising parameter-to-pressure transducer means converting a sensed ambient parameter variation to a functionally related input pressure variable; supply pressure means selectively providing first and second supply pressure magnitudes; pressure regulator means providing first and second preselected set point pressures; diverting relay means selectively constraining said regulator means to provide said first and second set point pressures in response to said first and second supply pressure magnitudes, respectively; and pressure responsive comparator relay means having a first input supplied with one of said selected set point pressures through said diverting relay means, a second input supplied with said input pressure variable, means responsive to the differential in said set point pressure and said input pressure variable effecting a functionally related control pressure output from said comparator relay means; said transducer means, said pressure regulator means, said diverting relay means, and said comparator relay means all being supplied by said supply pressure means; and said diverting relay means being responsive to changes in the magnitude of said supply pressure to selectively apply the respective corresponding one of said set point pressures to said first input of said comparator relay means and diverting the other of said set point pressures therefrom.
Claim 9
Dependent Claim
219 words
Control means effecting multiple set point parameter control and providing a control pressure output in response to a sensed parameter input comprising parameter-to-pressure transducer means converting a sensed ambient parameter variation to a functionally related input pressure variable; supply pressure means selectively providing first and second supply pressure magnitudes; pressure regulator means providing first and second preselected set point pressures; diverting relay means selectively constraining said regulator means to provide said first and second set point pressures in response to said first and second supply pressure magnitudes, respectively; and pressure responsive comparator relay means having a first input supplied with one of said selected set point pressures through said diverting relay means, a second input supplied with said input pressure variable, means responsive to the differential in said set point pressure and said input pressure variable effecting a functionally related control pressure output from said comparator relay means; said transducer means, said pressure regulator means, said diverting relay means, and said comparator relay means all being supplied by said supply pressure means; and said diverting relay means being responsive to changes in the magnitude of said supply pressure to selectively apply the respective corresponding one of said set point pressures to said first input of said comparator relay means and diverting the other of said set point pressures therefrom.
Claim 10
Dependent Claim
121 words
The invention defined in claim 7, wherein said diverting relaY means comprises a first and second diverting relay modules, said first module selectively controlling said pressure regulator means and effecting interconnection of said set point pressures with said comparator relay means, and said second module selectively controlling the transmission of supply pressure to said first module and including manual override means selectively precluding the application of supply pressure to said first module and latching said second module in a state of operation corresponding to that set point other than the one dictated by the magnitude of said supply pressure and constraining said first module to apply said other set point pressure to said first input means of said comparator relay means.
Claim 11
Dependent Claim
188 words
The invention defined in claim 8, wherein said parameter-to-pressure transducer comprises a base, a pressure chamber in said base, said pressure chamber including input, bleed and output port means, said input port means including flow restrictor means and adapted to be connected therethrough to a source of supply pressure, and said and said bleed port means including a valve seat externally of said pressure chamber, a bleed valve comprising a free valve body operatively engaged with said valve seat, first elongated parameter distortable means secured to said base over said valve seat and being so shaped and so proportioned as to permit said valve body to extend therethrough, and second elongated parameter distortable means coterminous with and having its ends engaged with the ends of said first distortable means engageable intermediate its ends with said valve body, said first and second distortable means being distortable in opposition in response to a given parameter variation whereby said valve body is selectively constrained by said second distortable means, as a function of said parameter variation, toward said valve seat in opposition to the pressure acting thereon in said bleed port.
References Cited (Backward Citations)
US3140047A
Cited
US3305172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |