US4381594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cold forming coupling shell
Assignee: Clevite Industries Inc
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Filing: 1981-02-17
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Granted: 1983-05-03
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Expires: 2001-02-17
Abstract
Abstract Method of cold forming a hose coupling wherein a shell element is drawn into a generally frusto-conical shape with at least one interior circular discontinuity.
Inventors
- 👤 George A. Levande
- 👤 Frederick J. Schwarzenbart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:25
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/20; F16L33/207; F16L33/2071; F16L33/2073; F16L33/2076; B; B21; B21K; B21K1/00; B21K1/14; B21K1/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49909; Y10T29/49913
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A method of making a permanently attached hose coupling comprising successively drawing a metal blank to form a hollow generally frusto-conical element having a large diameter portion at one end and a small diameter portion at the other end and a stepped interior therebetween characterized by at least one substantially continuous circular discontinuity, assembling a rigid tubular body within a flexible hose and with said element ensleeved about said hose with said smaller diameter end adjacent the hose end, and thereafter radially inwardly deforming said element rendering its shape generally cylindrical so that said at least one circular discontinuity grips into said hose.
Claim 2
Independent Claim
103 words
A method of making a permanently attached hose coupling comprising successively drawing a metal blank to form a hollow generally frusto-conical element having a large diameter portion at one end and a small diameter portion at the other end and a stepped interior therebetween characterized by at least one substantially continuous circular discontinuity, assembling a rigid tubular body within a flexible hose and with said element ensleeved about said hose with said smaller diameter end adjacent the hose end, and thereafter radially inwardly deforming said element rendering its shape generally cylindrical so that said at least one circular discontinuity grips into said hose.
Claim 3
Dependent Claim
32 words
The method of claim 1 in which a plurality of axially related steps are provided in said element which, upon said deformation, are formed into tangs directed away from said hose end.
Claim 4
Dependent Claim
34 words
The method of claim 2 in which said small diameter end is characterized by a generally cylindrical wall integral with the remainder of said element, said steps being provided only in said element remainder.
References Cited (Backward Citations)
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Cited
US2685458A
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US3056197A
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US3280613A
Cited
US3371408A
Cited
US3838592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-02 | 1986-11-01 | 1987-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-02 | 1990-11-01 | 1991-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-02 | 1994-11-01 | 1995-05-03 | $7700.00 | Window Closed / Lapsed |