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 Title: |
US4454765:
Extended range pressure transducers
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Lodge, Arthur S.; Madison, WI 53705
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| Assignee: |
None
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| Published / Filed: |
1984-06-19
/ 1981-11-03
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| Application Number: |
US1981000317604
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| IPC Code: |
Advanced:
G01L 9/00;
Core:
more...
IPC-7:
G01L 9/12;
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| U.S. Class: |
Current:
073/724;
073/756;
Original:
073/724;
073/756;
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| Field of Search: |
073/724,730,718,756,431
361/283
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| Priority Number: |
| 1981-11-03 |
US1981000317604 |
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| Abstract: |
The useful range of the disclosed pressure transducers is extended by isolating the sensing means of the transducer from bending moments produced in the transducer body by the fluid pressure being measured. The isolating means may comprise an isolating ring interposed between the body and the sensor means, disposed behind a diaphragm which is attached to the isolating ring and the body. The isolating ring is connected to the body by means adapted to hold the sensor means in an established relationship with the diaphragm while being of a character to avoid transmitting bending moments, whereby the isolating ring and the sensor means are isolated from bending moments developed in the body due to fluid pressure.
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| Attorney, Agent or Firm: |
Burmeister, York, Palmatier, Hamby & Jones ;
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| Primary / Asst. Examiners: |
Woodiel, Donald O.;
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| Family: |
None
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First Claim:
Show all 25 claims |
I claim:
1. A pressure measuring device, comprising substantially flat diaphragm means;
- a body backing up and supporting said diaphragm means;
- said body having an opening behind said diaphragm means;
- said diaphragm means covering said opening and affording a flexible resilient diaphragm extending across said opening;
- sensor means disposed in said opening behind said diaphragm for sensing any deflection of said diaphragm due to fluid pressure thereon;
- a mechanical isolating ring mounted in said opening behind said diaphragm;
- first connecting means between said body and said isolating ring;
- and second connecting means between said isolating ring and said sensor means for supporting said sensor means in an established relationship with said diaphragm;
- said first and second connecting means being of a character to hold said sensor means in an established relationship with said diaphragm while being of a character to avoid transmitting bending moments whereby said isolating ring and said sensor means are isolated from bending moments which may be developed in said body due to the fluid pressure which is being measured;
- said first connecting means comprising a shoulder on said body in said opening and facing away from said diaphragm,
- a portion on said isolating ring for engaging said shoulder,
- and screw threaded means between said body and said isolating ring for holding said portion of said isolating ring against said shoulder while avoiding the transmission of bending moments between said body and said isolating ring,
- said screw threaded means comprising a plurality of small machine screws extending between said isolating ring and said body.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
Show drawing descriptions
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| Description: |
Show description
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| Forward References: |
Show 20 U.S. patent(s) that reference this one
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