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US3603151A Expired / Lapsed US ⏱️ 0.0 years remaining

Gas adsorption thermometer

Assignee: Dresser Industries Inc
•
Filing: 1969-06-16
•
Granted: 1971-09-07
•
Expires: 1989-06-16
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Abstract

Abstract A gas adsorbent thermometer comprising an external housing; a temperature indicating member; means defining a chamber interiorly of the housing; a shaft member having one end thereof supporting the indicator member for rotational movement relative to the housing and the opposite end thereof disposed within the chamber; a multiconvolution helical Bourdon tube disposed within the chamber and arranged coaXially of the shaft; the chamber being provided with a quantity of fluid for dampening movement of the Bourdon tube relative to the housing; bearing means for rotatably supporting the shaft and constructed such that the fluid within the chamber will not leak therefrom regardless of the relative orientation of the housing; a takeoff member extending between the Bourdon tube and the shaft and adapted to impart rotary movement to the shaft in response to winding and unwinding movement of the Bourdon tube; a temperature sensing bulb containing a mass of gas adsorbent material, and a capillary tube communicating the bulb with the Bourdon tube.

Inventors

  • 👤 Herbert J Zurstadt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 03:18
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/003

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 24 words
The combination as set forth in claim 1 wherein said movable element comprises an elongated shaft member rotatably mounted coaxially of said Bourdon tube.
Claim 2
Dependent Claim 52 words
The combination as set forth in claim 2 which includes bearing means exteNding around at least a portion of said shaft member and positioned within said chamber such that at least a portion of said bearing means is out of contact with said fluid regardless of the operative position of the thermometer.
Claim 3
Dependent Claim 26 words
The combination as set forth in claim 3 wherein one end of said bearing means is located approximately midway between the opposite ends of said chamber.
Claim 4
Dependent Claim 43 words
The combination as set forth in claim 1 wherein said fluid engages at least a portion of each of the convolutions of said Bourdon tube when said housing is disposed in a position wherein the axis of said Bourdon tube extends generally horizontally.
Claim 5
Dependent Claim 21 words
The combination as set forth in claim 5 which includes means for adjustably connecting said Bourdon tube to said movable element.
Claim 6
Dependent Claim 50 words
The combination as set forth in claim 1 which includes bearing means for movably supporting said element and exposed inward of said chamber, and wherein the predetermined quantity of fluid is maintained free of at least a portion of said bearing means regardless of the angular orientation of the housing.
Claim 7
Dependent Claim 41 words
The combination as set forth in claim 7 wherein said movable element comprises an elongated rotatable shaft member, which includes a generally cylindrically shaped bearing member extending coaxially of said Bourdon tube and adapted for rotatable support of said shaft member.
Claim 8
Dependent Claim 18 words
The combination as set forth in claim 7 wherein said bearing means comprises an elongated hollow cylindrical member.
Claim 9
Dependent Claim 44 words
The combination as set forth in claim 9 wherein said bearing member is positioned inwardly of said Bourdon tube and arranged within said chamber such that a portion thereof remains out of contact with said fluid regardless of the angular orientation of the housing.
Claim 10
Dependent Claim 52 words
The combination as set forth in claim 10 which includes means for adjustably connecting said Bourdon tube to said shaft member, and compensation means located inwardly of said Bourdon tube for compensating the relative position of said shaft member with respect to said Bourdon tube in response to changes in ambient temperature.
Claim 11
Dependent Claim 30 words
The combination as set forth in claim 11 in which said compensating means comprises a generally spiral bimetallic member intermediately connected between the Bourdon tube and said adjustably connecting means.

References Cited (Backward Citations)

US1430688A Cited
US1518939A Cited
US1521343A Cited
US1724520A Cited
DE824564C Cited
US2695776A Cited
US3213688A Cited
US3163046A Cited
US3410141A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-06 1975-03-08 1975-09-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-06 1979-03-08 1979-09-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-06 1983-03-08 1983-09-07 $7700.00 Window Closed / Lapsed

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