US4052024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic gear motor application
Assignee: United States Department of the Army
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Filing: 1976-05-12
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Granted: 1977-10-04
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Expires: 1996-05-12
Abstract
Abstract A pneumatic gear motor application in which a tank filled to a predetermined pressure with an inert gas such as nitrogen is heated by a heat squib device to raise the temperature of the gas and also to increase the pressure of the gas in the storage tank and be supplied through a first frangible valve to a pressure regulator for regulating an outlet pressure to a servo valve for controlling flow to and from a pneumatic motor. The pneumatic motor drives through a reduction gear mechanism that drives a worm and worm gear to actuate a control fin of a missile. The missile has four drive motors and four control fins to provide guidance for the missile.
Inventors
- 👤 James M. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:30
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/60; F42B10/62; F42B10/64
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
A pneumatic device comprising a source of pneumatic gas supply, means supplying said gas at a predetermined pressure to a manifold, servo valve means connected to said manifold for receiving said gas at said predetermined pressure and connected to a pneumatic gear motor for supplying and exhausting said gas to and from said pneumatic gear motor, a gear of said pneumatic gear motor being connected to reduction gearing that is driven by said pneumatic gear motor, and said reduction gearing being connected for driving a control fin and a position feedback potentiometer to indicate the position of the control fin.
Claim 2
Dependent Claim
100 words
A pneumatic device comprising a source of pneumatic gas supply, means supplying said gas at a predetermined pressure to a manifold, servo valve means connected to said manifold for receiving said gas at said predetermined pressure and connected to a pneumatic gear motor for supplying and exhausting said gas to and from said pneumatic gear motor, a gear of said pneumatic gear motor being connected to reduction gearing that is driven by said pneumatic gear motor, and said reduction gearing being connected for driving a control fin and a position feedback potentiometer to indicate the position of the control fin.
Claim 3
Dependent Claim
42 words
A pneumatic device as set forth in claim 1, wherein said reduction gearing is spur gears connected at said pneumatic gear motor and a worm and worm gear connected at said control fin for driving said control fin and said feedback potentiometer.
Claim 4
Dependent Claim
35 words
A pneumatic device as set forth in claim 1, wherein said reduction gearing has a reduction ratio of about 150:1 and a velocity transducer is connected to one of said spur gears for indicating velocity.
Claim 5
Dependent Claim
33 words
A pneumatic device as set forth in claim 3, wherein said spur gears have a reduction ratio of about 15:1 and said worm and worm gear have a reduction ratio of about 10:1.
Claim 6
Dependent Claim
49 words
A pneumatic device as set forth in claim 4, wherein said means supplying said gas at a predetermined pressure is a tank containing said gas supply, a valve interconnecting said tank to a pressure regulator, and said pressure regulator delivering said gas at a regulated pressure to said manifold.
Claim 7
Dependent Claim
28 words
A pneumatic device as set forth in claim 5, wherein said tank has means mounted thereon for raising the pressure and temperature of the gas within said tank.
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) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |