US4037821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescoping retractor
Assignee: United States Department of the Army
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Filing: 1976-08-10
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Granted: 1977-07-26
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Expires: 1996-08-10
Abstract
Abstract A telescoping retractor comprised of a two stage cylinder assembly actuatedy an electroexplosive power cartridge. A pair of cylinders are mounted in concentric relation. A piston rod is carried in the inner cylinder. The power cartridge produces the gas which sequentially retracts the outer cylinder, the inner cylinder and then the piston which is secured to the structure to be retracted.
Inventors
- 👤 Frank E. Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:46
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/19; F41; F41F; F41F3/00; F41F3/04; F41F3/055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A telescoping retraction device for rapidly withdrawing an umbilical connector from a missile comprising: A. an outer cylinder having a first inlet port therein; B. an inner cylinder slidably carried in said outer cylinder, said inner cylinder having a second inlet port therein; C. a piston slidably carried in said inner cylinder, and a piston rod having a first end secured to said piston and a second end secured to said umbilical connector; d. a power cartridge for generating a source of gas and for directing gas in said first inlet port to retract said inner cylinder for alignment of said second inlet port with said first inlet port whereby gas is directed against said piston for movement of said first object from said second object; and, shock absorbing means carried in the base of said outer cylinder.
Claim 2
Dependent Claim
138 words
A telescoping retraction device for rapidly withdrawing an umbilical connector from a missile comprising: A. an outer cylinder having a first inlet port therein; B. an inner cylinder slidably carried in said outer cylinder, said inner cylinder having a second inlet port therein; C. a piston slidably carried in said inner cylinder, and a piston rod having a first end secured to said piston and a second end secured to said umbilical connector; d. a power cartridge for generating a source of gas and for directing gas in said first inlet port to retract said inner cylinder for alignment of said second inlet port with said first inlet port whereby gas is directed against said piston for movement of said first object from said second object; and, shock absorbing means carried in the base of said outer cylinder.
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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |