US3664175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Velocity gauge
Assignee: Sparton Corp
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Filing: 1969-04-01
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Granted: 1972-05-23
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Expires: 1989-04-01
Abstract
Abstract A gauge capable of sensing the velocity at which it is displaced utilizing a pendulous mass dampened within a high viscosity oil, and utilizing polarized electromagnetic deflection means for deflecting the mass for test and calibration purposes.
Inventors
- 👤 William D Pierson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:51
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/18; G01V1/181; G01P; G01P21/00; G01P21/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
171 words
A velocity sensing device comprising, in combination, a casing, pendulum pivot means mounted within said casing defining a pivot axis, a pendulum within said casing supported upon said pivot means having a null position, said pendulum including an oscillatable pendulous mass portion, electrical sensing means within said casing sensing oscillation of said pendulum comprising a pair of armatures mounted on said pendulum adjacent said pivot axis and on opposite sides of said pendulum and an electric inductance coil mounted within said casing adjacent each of said armatures, an electromagnetic coil within said casing disposed adjacent said pendulum mass portion, magnetic means upon said mass portion whereby energizing of said coil displaces said mass portion from said null position, and a pendulum stop mounted within said casing remotely spaced from the pendulum null position, said pendulum stop adapted to engage said pendulum mass portion upon said portion being displaced toward said stop upon energization of said coil to provide predetermined penduLum movement upon deenergizing said coil for permitting calibration of said device.
Claim 2
Dependent Claim
171 words
A velocity sensing device comprising, in combination, a casing, pendulum pivot means mounted within said casing defining a pivot axis, a pendulum within said casing supported upon said pivot means having a null position, said pendulum including an oscillatable pendulous mass portion, electrical sensing means within said casing sensing oscillation of said pendulum comprising a pair of armatures mounted on said pendulum adjacent said pivot axis and on opposite sides of said pendulum and an electric inductance coil mounted within said casing adjacent each of said armatures, an electromagnetic coil within said casing disposed adjacent said pendulum mass portion, magnetic means upon said mass portion whereby energizing of said coil displaces said mass portion from said null position, and a pendulum stop mounted within said casing remotely spaced from the pendulum null position, said pendulum stop adapted to engage said pendulum mass portion upon said portion being displaced toward said stop upon energization of said coil to provide predetermined penduLum movement upon deenergizing said coil for permitting calibration of said device.
Claim 3
Dependent Claim
183 words
A velocity sensing device comprising, in combination, a casing, pendulum pivot means mounted within said casing defining a pivot axis, a pendulum within said casing supported upon said pivot means having a null position, said pendulum including an oscillatable pendulous mass portion, electrical sensing means within said casing sensing oscillation of said pendulum, an electromagnetic coil within said casing disposed adjacent said pendulum mass portion, magnetic means upon said mass portion whereby energizing of said coil displaces said mass portion from said null position, and a single pendulum stop mounted within said casing remotely spaced from the pendulum null position, said pendulum stop adapted to engage said pendulum mass portion upon said portion being displaced toward said stop upon energization of said coil to provide predetermined pendulum movement upon deenergizing said coil for permitting calibration of said device, said electromagnetic coil being polarized to deflect said pendulum mass portion toward said stop, said electromagnetic coil polarization including surface portions disposed adjacent the lateral sides of said pendulum mass portion, said surface portions being nonparallel and converging in the direction toward said pendulum stop.
Claim 4
Dependent Claim
183 words
A velocity sensing device comprising, in combination, a casing, pendulum pivot means mounted within said casing defining a pivot axis, a pendulum within said casing supported upon said pivot means having a null position, said pendulum including an oscillatable pendulous mass portion, electrical sensing means within said casing sensing oscillation of said pendulum, an electromagnetic coil within said casing disposed adjacent said pendulum mass portion, magnetic means upon said mass portion whereby energizing of said coil displaces said mass portion from said null position, and a single pendulum stop mounted within said casing remotely spaced from the pendulum null position, said pendulum stop adapted to engage said pendulum mass portion upon said portion being displaced toward said stop upon energization of said coil to provide predetermined pendulum movement upon deenergizing said coil for permitting calibration of said device, said electromagnetic coil being polarized to deflect said pendulum mass portion toward said stop, said electromagnetic coil polarization including surface portions disposed adjacent the lateral sides of said pendulum mass portion, said surface portions being nonparallel and converging in the direction toward said pendulum stop.
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |