US4413529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustably keyed pressure gauge construction
Assignee: Dresser Industries Inc
•
Filing: 1981-09-17
•
Granted: 1983-11-08
•
Expires: 2001-09-17
Abstract
Abstract A pressure gauge having a rotatably secured Bourdon tube, and a dial plate arcuately displaceable for effecting zero calibration of the gauge includes a rotationally presettable key for registered placement within a key-slotted receptacle in which the gauge is to be utilized. Keying is provided by a simulated Y-shaped washer mounted in an annular groove on the gauge stem and arcuately secured post-calibration at a predetermined angular setting from a reference point on the gauge dial.
Inventors
- 👤 Robert D. Bissell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:30
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/04; G01L7/048; Y; Y10; Y10T; Y10T403/00; Y10T403/16; Y10T403/1616; Y10T403/1624
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
71 words
In a pressure gauge including a casing, a Bourdon tube rotationally secured relative to said casing, a pointer operably connected to said Bourdon tube, a dial plate arcuately displaceable for zero calibration setting relative to said pointer and a reference indicia on said dial plate, key means supported on said gauge and adjustably set at a predetermined angular displacement from said reference indicia on the post-calibration setting of said dial plate.
Claim 2
Dependent Claim
71 words
In a pressure gauge including a casing, a Bourdon tube rotationally secured relative to said casing, a pointer operably connected to said Bourdon tube, a dial plate arcuately displaceable for zero calibration setting relative to said pointer and a reference indicia on said dial plate, key means supported on said gauge and adjustably set at a predetermined angular displacement from said reference indicia on the post-calibration setting of said dial plate.
Claim 3
Dependent Claim
41 words
In a pressure gauge according to claim 1 including a stem extending laterally rearward from said casing, support means on said stem for supporting said key means and means securing said key means on said stem at said angular displacement setting.
Claim 4
Dependent Claim
24 words
In a pressure gauge according to claim 2 in which said support means comprises a groove extending transversely in the periphery of said stem.
Claim 5
Dependent Claim
30 words
In a pressure gauge according to claim 3 in which said groove is annular and said key means is of a simulated Y-shape adapted to be received in said groove.
Claim 6
Dependent Claim
76 words
In the method of manufacturing a pressure gauge including a casing, a Bourdon tube rotationally secured relative to said casing, a pointer operably connected to said Bourdon tube, a dial plate arcuately displaceable for zero calibration setting relative to said pointer and a reference indicia on said dial plate, the step of adjustably setting key means on said gauge at a predetermined angular displacement from the reference indicia on the post-calibration setting of said dial plate.
Claim 7
Dependent Claim
76 words
In the method of manufacturing a pressure gauge including a casing, a Bourdon tube rotationally secured relative to said casing, a pointer operably connected to said Bourdon tube, a dial plate arcuately displaceable for zero calibration setting relative to said pointer and a reference indicia on said dial plate, the step of adjustably setting key means on said gauge at a predetermined angular displacement from the reference indicia on the post-calibration setting of said dial plate.
Claim 8
Dependent Claim
27 words
In the method according to claim 5 including the added step of securing the key means to said gauge at the adjusted setting of the preceding step.
References Cited (Backward Citations)
US1922616A
Cited
US3010520A
Cited
US3463517A
Cited
US3952598A
Cited
US4046387A
Cited
US4161888A
Cited
US4296949A
Cited
US4384736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |