Patent US4735091A successfully refreshed from Google Patents.
US4735091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure transducer
Assignee: Kristal Instrumente AG
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Filing: 1986-11-24
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Granted: 1988-04-05
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Expires: 2006-11-24
Abstract
Abstract A transducer, particularly for ballistic high pressure measurements, comprises an assembly body, with a shoulder sealing section and a sensor member, which can be received in a recess in the assembly body. The assembly body can be screwed into a component, e.g. a gun barrel, the measurement area on the sealing section being sealed. The assembly body has a tubular extension extending beyond the sealing section, which extension encompasses the sensor member on a cylindrical fitting face. The high sealing forces required for sealing the measurement area are kept remote from the sensor member. The measuring sensitivity of the transducer is therefore independent of the prevailing tightening torques. A cylindrical gap between the sensor member and assembly body provides additional insulation between the sealing forces and the prestress forces prevailing in the sensor member. The cylindrical gap is sealed against the pressure medium by a force fit or weld between the assembly body and the sensor member. A reception space can be provided ahead of the diaphragm section of the sensor member, which reception space can be formed by an annular section projecting from the diaphragm section, and can be provided with replaceable thermal and erosion protection devices.
Inventors
- 👤 Paul Engeler
- 👤 Hans-Conrad Sonderegger
- 👤 Peter Wolfer
- 👤 Reto Calderra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:34
CPC Classifications
F; F42; F42B; F42B35/00; G; G01; G01L; G01L23/00; G01L23/08; G01L23/10; G01L23/22; G01L23/221; G01L23/222; G01L5/00; G01L5/14
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
132 words
A transducer, particularly for high pressure measurements, comprising an assembly body adapted to be secured in a hole of a component by a securing portion, said assembly body having a shoulder sealing section for sealing the transducer with respect to the hole, and a sensor member connected to the assembly body, said sensor member having a diaphragm section acting on a sensor element, the assembly body including a tubular extension projecting axially from and ahead of the securing portion and the shoulder sealing section, the sensor member being connected to a lower end of said extension substantially ahead of said securing portion and said shoulder sealing section, to substantially prevent the transmission of the assembly and sealing forces which occur in the area of the shoulder sealing section to the sensor member.
Claim 2
Dependent Claim
132 words
A transducer, particularly for high pressure measurements, comprising an assembly body adapted to be secured in a hole of a component by a securing portion, said assembly body having a shoulder sealing section for sealing the transducer with respect to the hole, and a sensor member connected to the assembly body, said sensor member having a diaphragm section acting on a sensor element, the assembly body including a tubular extension projecting axially from and ahead of the securing portion and the shoulder sealing section, the sensor member being connected to a lower end of said extension substantially ahead of said securing portion and said shoulder sealing section, to substantially prevent the transmission of the assembly and sealing forces which occur in the area of the shoulder sealing section to the sensor member.
Claim 3
Dependent Claim
23 words
A transducer according to claim 1, wherein the sensor member includes a concentric centering section which is sealingly surrounded by the tubular extension.
Claim 4
Dependent Claim
33 words
A transducer according to claim 2, wherein the tubular extension is extended at least up to the diaphragm section so as to surround the diaphragm section in the manner of a protective ring.
Claim 5
Dependent Claim
23 words
A transducer according to claim 3, wherein the sensor member is connected with the tubular extension within the area of the diaphragm section.
Claim 6
Dependent Claim
20 words
A transducer according to claim 4, wherein the sensor member is spaced from the tubular extension outside the connection place.
Claim 7
Dependent Claim
33 words
A transducer according to claim 1, wherein the tubular extension is extended at least up to the diaphragm section so as to surround the diaphragm section in the manner of a protective ring.
Claim 8
Dependent Claim
23 words
A transducer according to claim 6, wherein the sensor member is connected with the tubular extension within the area of the diaphragm section.
Claim 9
Dependent Claim
20 words
A transducer according to claim 7, wherein the sensor member is spaced from the tubular extension outside the connection place.
Claim 10
Dependent Claim
38 words
A transducer according to claim 1, with a portion of the sensor member received in and spaced from the assembly body, wherein the clearance between the sensor member and the assembly body is sealed against the pressure medium.
Claim 11
Dependent Claim
16 words
A transducer according to claim 1, wherein the sensor member is welded to the tubular extension.
Claim 12
Dependent Claim
34 words
A transducer according to claim 1, wherein the sensor member is a transducer element closed in itself and adapted to be prefabricated in mass production and separately pretested before installation in an assembly body.
Claim 13
Dependent Claim
28 words
A transducer according to claim 1, wherein the diaphragm section is formed flat and is protected from attacks by gas jets by means of an elastic protective diaphragm.
Claim 14
Dependent Claim
38 words
A transducer according to claim 1, wherein an elastic replaceable flame protection cap, with gas through-flow openings is arranged in a diaphragm antechamber, and said cap being operable to direct bundled gas jets diffusely onto the diaphragm section.
Claim 15
Dependent Claim
33 words
A transducer according to claim 1, wherein the sealing forces are separated from the prestress forces prevailing in the sensor member by a cylindrical gap between the sensor member and the assembly body.
Claim 16
Dependent Claim
174 words
A transducer, particularly for high pressure measurements, comprising an assembly body adapted to be secured in a hole of a component by a securing portion, said assembly body having a shoulder sealing section for sealing the transducer with respect to the hole, and a sensor member having a diaphragm section acting on a sensor element, said assembly body including a tubular extension projecting axially from and ahead of the securing portion and the shoulder sealing section, the sensor member being connected to a lower end of said extension substantially ahead of said shoulder sealing section and said securing portion, said tubular extension extending at least up to and surrounding circumferentially the diaphragm section, and a portion of the sensor member being received in the assembly body in spaced relationship thereto, the clearance between said portion of the sensor member and the assembly body being sealed against the pressure medium, whereby the assembly and sealing forces occurring in the area of the shoulder sealing section are substantially prevented from being transmitted to the sensor member.
Claim 17
Dependent Claim
174 words
A transducer, particularly for high pressure measurements, comprising an assembly body adapted to be secured in a hole of a component by a securing portion, said assembly body having a shoulder sealing section for sealing the transducer with respect to the hole, and a sensor member having a diaphragm section acting on a sensor element, said assembly body including a tubular extension projecting axially from and ahead of the securing portion and the shoulder sealing section, the sensor member being connected to a lower end of said extension substantially ahead of said shoulder sealing section and said securing portion, said tubular extension extending at least up to and surrounding circumferentially the diaphragm section, and a portion of the sensor member being received in the assembly body in spaced relationship thereto, the clearance between said portion of the sensor member and the assembly body being sealed against the pressure medium, whereby the assembly and sealing forces occurring in the area of the shoulder sealing section are substantially prevented from being transmitted to the sensor member.
Claim 18
Dependent Claim
23 words
A transducer according to claim 15, wherein the sensor member includes a concentric centering section which is sealingly surrounded by the tubular extension.
Claim 19
Dependent Claim
16 words
A transducer according to claim 15, wherein the sensor member is welded to the tubular extension.
Claim 20
Dependent Claim
31 words
A transducer according to claim 15, wherein the sensor member is a closed transducer element adapted to be prefabricated in mass production and separately pretested before installation in the assembly body.
Claim 21
Dependent Claim
28 words
A transducer according to claim 15, wherein the diaphragm section is formed flat and is protected from attacks by gas jets by means of an elastic protective diaphragm.
Claim 22
Dependent Claim
37 words
A transducer according to claim 15, wherein an elastic replaceable flame protection cap having gas through-flow openings is arranged in a diaphragm antechamber, said cap being operable to direct bundled gas jets diffusely onto the diaphragm section.
Claim 23
Dependent Claim
149 words
A transducer, particularly for high pressure measurements, comprising an assembly body adapted to be secured in a hole of a component by a securing portion, said assembly body having a shoulder sealing section for sealing the transducer with respect to the hole, and a sensor member having a diaphragm section acting on a sensor element, said assembly body including a tubular extension projecting axially from and ahead of the securing portion and the shoulder sealing section, the sensor member being connected with an end of the tubular extension within the area of the diaphragm section substantially ahead of said securing portion and said shoulder sealing section, and the sensor member, with the exception at the place of connection, being spaced from the tubular extension, whereby the assembly and sealing forces occurring in the area of the shoulder sealing section are substantially prevented from being transmitted to the sensor member.
Claim 24
Dependent Claim
149 words
A transducer, particularly for high pressure measurements, comprising an assembly body adapted to be secured in a hole of a component by a securing portion, said assembly body having a shoulder sealing section for sealing the transducer with respect to the hole, and a sensor member having a diaphragm section acting on a sensor element, said assembly body including a tubular extension projecting axially from and ahead of the securing portion and the shoulder sealing section, the sensor member being connected with an end of the tubular extension within the area of the diaphragm section substantially ahead of said securing portion and said shoulder sealing section, and the sensor member, with the exception at the place of connection, being spaced from the tubular extension, whereby the assembly and sealing forces occurring in the area of the shoulder sealing section are substantially prevented from being transmitted to the sensor member.
Claim 25
Dependent Claim
22 words
A transducer according to claim 21, wherein the sensor member includes a concentric section which is sealingly surrounded by the tubular extension.
Claim 26
Dependent Claim
16 words
A transducer according to claim 21, wherein the sensor member is welded to the tubular extension.
Claim 27
Dependent Claim
31 words
A transducer according to claim 21, wherein the sensor member is a closed transducer element adapted to be prefabricated in mass production and separately pretested before installation in the assembly body.
Claim 28
Dependent Claim
26 words
A transducer according to claim 21, wherein the diaphragm section is formed flat and is protected from attacks by gas jets by an elastic protective diaphragm.
Claim 29
Dependent Claim
37 words
A transducer according to claim 21, wherein an elastic replaceable flame protection cap having gas through-flow openings is arranged in a diaphragm antechamber, said cap being operable to direct bundled gas jets diffusely onto the diaphragm section.
Claim 30
Dependent Claim
33 words
A transducer according to claim 21, wherein the sealing forces are separated from the prestress forces prevailing in the sensor member by a cylindrical gap between the sensor member and the assembly body.
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) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |