Patent US3743267A successfully refreshed from Google Patents.
US3743267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorbing device
Assignee: Ametek Inc
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Filing: 1971-11-19
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Granted: 1973-07-03
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Expires: 1991-11-19
Abstract
Abstract A self-erecting device has a base on which is mounted a selferecting tube. An energy absorbing coil of wire has one end connected to the outer end of the tube and the other end connected to the base. The erection of the tube extends the coil beyond its elastic unit to absorb energy by deformation in the plastic range.
Inventors
- 👤 R Guerster
- 👤 L Leiter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:32
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/12; F16F7/125; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/459
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
61 words
In combination with a self-erecting device having a base and a self-erecting tube, an energy absorbing coil of wire within the tube having one end connected to the outer end of the tube and other end connected to the base, the erection of the tube extending the coil beyond its elastic limit to absorb energy by deformation in the plastic range.
Claim 2
Dependent Claim
61 words
In combination with a self-erecting device having a base and a self-erecting tube, an energy absorbing coil of wire within the tube having one end connected to the outer end of the tube and other end connected to the base, the erection of the tube extending the coil beyond its elastic limit to absorb energy by deformation in the plastic range.
Claim 3
Dependent Claim
31 words
The combination of claim 1 in which the self-erecting device is a tube formed from a helical ribbon spring having adjacent turns set to tightly coil in overlapping and telescoping engagement.
Claim 4
Dependent Claim
37 words
The combination of claim 2 having a guide pin mounted on the base and in which the other end of the coil of wire is connected to the base by rotatable means co-axial with the guide pin.
Claim 5
Dependent Claim
33 words
The combination of claim 2 having releasable means engaging the top of the tube to hold the tube in a collapsed position comprising a collar and a releasable stop member engaging the collar.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |