Patent US3631723A successfully refreshed from Google Patents.
US3631723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-responsive instrument
Assignee: SPRINGFIELD INSTRUMENT CO Inc
•
Filing: 1970-06-15
•
Granted: 1972-01-04
•
Expires: 1990-06-15
Abstract
Abstract A motion-transmitting and amplifying mechanism for a pressureresponsive instrument, such as an aneroid barometer, which includes a readily calibrated capsule coupled by a motionamplifying leverage system to an indicator which includes a pointer journaled to move about a calibrated dial plate.
Inventors
- 👤 Heinz Eberhard
- 👤 Anton Menzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:54
CPC Classifications
G; G01; G01L; G01L7/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
208 words
A pressure-responsive instrument comprising a base plate, a circular capsule mounted on said base plate and having a wall portion movable in response to changes in fluid pressure therein, a frame mounted on said base plate and having a mounting plate extending in a plane generally parallel to and over said wall portion of said capsule, an actuating lever, means pivotally mounting said actuating lever on said mounting plate at a first pivot pin extending parallel to the plane of said mounting plate and chordwise of said capsule, means coupling said actuating lever to said capsule for movement in response to movement of said movable wall portion, indicator means including a pointer arbor journaled on said frame perpendicular to the plane of said mounting plate, axially of said capsule and at right angles to said first pivot pin, a coupling arm, means pivotally mounting said coupling arm on said mounting plate at a second pivot pin parallel to and spaced from said pointer arbor, a cord wound around said arbor and having one end connected to said coupling arm, a common instrument and indicator bias spring operatively connected to the other end of said cord and means for transmitting motion from said actuating lever to said coupling arm.
Claim 2
Dependent Claim
208 words
A pressure-responsive instrument comprising a base plate, a circular capsule mounted on said base plate and having a wall portion movable in response to changes in fluid pressure therein, a frame mounted on said base plate and having a mounting plate extending in a plane generally parallel to and over said wall portion of said capsule, an actuating lever, means pivotally mounting said actuating lever on said mounting plate at a first pivot pin extending parallel to the plane of said mounting plate and chordwise of said capsule, means coupling said actuating lever to said capsule for movement in response to movement of said movable wall portion, indicator means including a pointer arbor journaled on said frame perpendicular to the plane of said mounting plate, axially of said capsule and at right angles to said first pivot pin, a coupling arm, means pivotally mounting said coupling arm on said mounting plate at a second pivot pin parallel to and spaced from said pointer arbor, a cord wound around said arbor and having one end connected to said coupling arm, a common instrument and indicator bias spring operatively connected to the other end of said cord and means for transmitting motion from said actuating lever to said coupling arm.
Claim 3
Dependent Claim
20 words
An instrument according to claim 1 including means for adjusting the position of said capsule relative to said base plate.
Claim 4
Dependent Claim
29 words
An instrument according to claim 2 wherein said means includes a threaded stud fixed to said capsule and a threaded hole on said base plate receiving said threaded stud.
Claim 5
Dependent Claim
24 words
An instrument according to claim 1 wherein the motion-transmitting means includes an upstanding arm integral with said actuating lever and engaging said coupling arm.
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |