Patent US3569912A successfully refreshed from Google Patents.
US3569912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit of adjustable stiffness
Assignee: United States Department of the Navy
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Filing: 1969-05-29
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Granted: 1971-03-09
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Expires: 1989-05-29
Abstract
Abstract An electrical connector including a flexible armored sheath having an insulated conductor threaded therethrough and electrically connected between a plug unit and a breech cap which is adapted for applying a firing signal to a pyrotechnic cartridge and which has flanged spring pins formed to function both as ground contacts and as spent cartridge extracting means. A braided sheath encircles the armored sheath and is mechanically connected at one end to the breech cap and at the other end through a turnbucklelike sheath stretching assembly to the plug unit. The stretching assembly enables the braided sheath to be longitudinally stretched so that it tightly grips the armored sheath and forms therewith a more rigid conduit.
Inventors
- 👤 Carl A Damm
- 👤 Albert C Eichmann
- 👤 William J Halpern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:01
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/56; H01R13/562; B; B64; B64D; B64D1/00; B64D1/02; B64D1/04; B64D1/06; H01B; H01B7/00; H01B7/04; Y; Y10; Y10S; Y10S439/00; Y10S439/919
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
189 words
A conduit of adjustable stiffness comprising: a helically coiled strip forming an elongated flexible tube whose resistance to flexure increases when subjected to radial compression; an elongated tubular sheath whose transverse dimension changes as a function of change in its length, said tube being arranged inside said sheath and having confronting boundaries for providing surface contact between said tube and said sheath; anchor means connected to one end of said sheath; a threaded coupling having a protruding boss secured to the other end of said sheath and an axial bore slidably receiving the adjacent end of said tube; a threaded fitting threadably engaging said coupling for changing the length of said sheath in a direction to cause said confronting boundaries to engage each other exerting radial compression on said tube and reducing the flexibility thereof; an anchor member having a threaded chamber receiving said fitting; said coupling, said fitting and said anchor member each having slots of which are registrable with each other; a key engageable with said slots in registration preventing rotation of said coupling and said fitting; and means for retaining said key in said registered slots.
Claim 2
Dependent Claim
189 words
A conduit of adjustable stiffness comprising: a helically coiled strip forming an elongated flexible tube whose resistance to flexure increases when subjected to radial compression; an elongated tubular sheath whose transverse dimension changes as a function of change in its length, said tube being arranged inside said sheath and having confronting boundaries for providing surface contact between said tube and said sheath; anchor means connected to one end of said sheath; a threaded coupling having a protruding boss secured to the other end of said sheath and an axial bore slidably receiving the adjacent end of said tube; a threaded fitting threadably engaging said coupling for changing the length of said sheath in a direction to cause said confronting boundaries to engage each other exerting radial compression on said tube and reducing the flexibility thereof; an anchor member having a threaded chamber receiving said fitting; said coupling, said fitting and said anchor member each having slots of which are registrable with each other; a key engageable with said slots in registration preventing rotation of said coupling and said fitting; and means for retaining said key in said registered slots.
Claim 3
Dependent Claim
45 words
A conduit according to claim 1 further comprising: an electrical conductor freely carried within said tube; and said coupling, said fitting and said anchor member defining a channel through which said conductor extends, one end of said conductor forming a terminal in said anchor member.
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |