US3851374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assemblying energy absorbers
Assignee: ARA PROD Inc
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Filing: 1972-12-01
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Granted: 1974-12-03
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Expires: 1992-12-01
Abstract
Abstract Methods of assembling energy absorbers of the type comprising telescoping tubes having a helically wound energy absorbing element between the tubes. The basic method comprises the steps of helically winding the convolutions of wire onto the inner telescoping tube and fitting the tubes in telescoping relationship with the helical winding between them. Variations are possible in the order of execution of the steps and also in the details of the steps.
Inventors
- 👤 B Mazelsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:32
CPC Classifications
B; B23; B23P; B23P19/00; B23P19/04; F; F16; F16F; F16F7/00; F16F7/12; F16F7/125; B23P2700/00; B23P2700/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879; Y10T29/49881; Y10T29/49895
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
126 words
A method of assembling energy absorbers of the type comprising cylindrical telescoping members having circular energy absorbing means in the annular space between the members, comprising the steps of: positioning the circular elements adjacent to each other about an axis by winding a continuous element into convolutions about a cylindrical dummy member having an axis coinciding with said axis; aligning the inner and outer telescoping members with said axis; positioning said dummy member between said telescoping members; and moving the inner and outer telescoping members axially relatively to push the circular elements axially off said dummy member and onto said telescoping member in a position between said telescoping members thereby to cause the circular elements to be positioned in the annular space between the telescoping members.
Claim 2
Independent Claim
126 words
A method of assembling energy absorbers of the type comprising cylindrical telescoping members having circular energy absorbing means in the annular space between the members, comprising the steps of: positioning the circular elements adjacent to each other about an axis by winding a continuous element into convolutions about a cylindrical dummy member having an axis coinciding with said axis; aligning the inner and outer telescoping members with said axis; positioning said dummy member between said telescoping members; and moving the inner and outer telescoping members axially relatively to push the circular elements axially off said dummy member and onto said telescoping member in a position between said telescoping members thereby to cause the circular elements to be positioned in the annular space between the telescoping members.
Claim 3
Dependent Claim
31 words
The method as in claim 1, including the step of positioning the circular elements by winding continuous elongated elements into a helix having convolutions of the same size about said axis.
Claim 4
Dependent Claim
23 words
The method as in claim 1, including the step of continuing to push the telescoping members together and then removing the dummy member.
Claim 5
Dependent Claim
16 words
A method as in claim 3, including radially holding the circular elements while moving them axially.
Claim 6
Dependent Claim
20 words
A method as in claim 1, including holding the circular elements together axially while pushing them off the dummy member.
Claim 7
Dependent Claim
16 words
The invention defined in claim 1, including radially holding the circular elements while moving them axially.
Claim 8
Dependent Claim
20 words
The invention defined in claim 6, including holding the circular elements together axially while pushing them off the dummy member.
Claim 9
Dependent Claim
23 words
The invention defined in claim 7, inclUding the step of continuing to push the telescoping members together and then removing the dummy member.
References Cited (Backward Citations)
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US2138144A
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US2329000A
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US3089520A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |