US4074412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of repairing or reinforcing tubular plastic members
Assignee: Individual
•
Filing: 1976-10-04
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Granted: 1978-02-21
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Expires: 1996-10-04
Abstract
Abstract A method of repairing or reinforcing a tubular plastic member is described. According to the method, a metal sleeve is applied to the plastic member under the action of heat. The sleeve is of a shape and size selected to closely fit and make surface-to-surface contact with the member at the region thereof to be repaired or reinforced. The sleeve is heated to a temperature sufficient to cause melting of the surface of the member where it contacts the metal sleeve. Subsequently, the plastic member and sleeve are abruptly cooled.
Inventors
- 👤 Franjo Miskic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:52
CPC Classifications
B; B23; B23P; B23P6/00; F; F16; F16L; F16L47/00; F16L47/20; F16L55/00; F16L55/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49732; Y10T29/49734; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
A method of repairing a plastic hose connector including a tubular member having an outer end portion which originally included an outwardly projecting annular lip retaining a captive nut, the method comprising the steps of: (a) applying to the member under the action of heat, a metal sleeve which is of a shape and size selected to closely fit and make surface-to-surface contact with the tubular plastic member at the region thereof to be repaired, the sleeve having an outer end which includes a lip simulating said lip of the tubular plastic member and retaining a captive nut, the sleeve being heated to a temperature sufficient to cause melting of the surface of the member where it contacts the metal sleeve, and the sleeve being applied to the member in a position such that the lip and nut of the sleeve replace the corresponding original parts of the hose connector; and, (b) abruptly cooling the plastic member and sleeve.
Claim 2
Independent Claim
159 words
A method of repairing a plastic hose connector including a tubular member having an outer end portion which originally included an outwardly projecting annular lip retaining a captive nut, the method comprising the steps of: (a) applying to the member under the action of heat, a metal sleeve which is of a shape and size selected to closely fit and make surface-to-surface contact with the tubular plastic member at the region thereof to be repaired, the sleeve having an outer end which includes a lip simulating said lip of the tubular plastic member and retaining a captive nut, the sleeve being heated to a temperature sufficient to cause melting of the surface of the member where it contacts the metal sleeve, and the sleeve being applied to the member in a position such that the lip and nut of the sleeve replace the corresponding original parts of the hose connector; and, (b) abruptly cooling the plastic member and sleeve.
Claim 3
Dependent Claim
59 words
A method as claimed in claim 1, wherein step (a) is performed by preheating the metal sleeve and applying it to the tubular plastic member in a hot condition, the temperature to which the sleeve is pre-heated being such that, when the sleeve is fitted to the member the surface of the member melts where it contacts the sleeve.
Claim 4
Dependent Claim
55 words
A method as claimed in claim 1, wherein step (a) is performed by fitting the metal sleeve to the member in an unheated condition and subsequently applying heat to the sleeve and thereby also to the member, to a temperature sufficient to cause melting of the surface of the member where it contacts the sleeve.
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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |