US3707032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming an abrasion resistant hose assembly
Assignee: Weatherhead Co
•
Filing: 1970-11-20
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Granted: 1972-12-26
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Expires: 1990-11-20
Abstract
Abstract An abrasion resistant flexible hose assembly includes a length of flexible hose having hose end fittings attached to its ends and abrasion resistant means in the form of separate annular bumpers arranged along the hose in longitudinally spaced positions. Each bumper encircles a small portion of the length of the hose and cooperates with the other bumpers to protect the hose from abrading engagement with adjacent structures. The bumpers individually engage the hose with a shrink fit to maintain their spacing.
Inventors
- 👤 William Brunelle
- 👤 James W Cartwright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:29
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/74; F; F16; F16L; F16L11/00; F16L11/04; F16L11/12; F16L57/00; B29K; B29K2021/00; B29L; B29L2023/00; B29L2023/005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
A method of forming an abrasion resistant hose assembly comprising the sequential steps of selecting a length of flexible hose having an outer surface, securing metallic hose fittings to each end of said hose, placing said hose in a mold formed to receive a portion of said hose interspacing the ends of the hose and including a plurality of chambers extending circumferentially around said hose in said mold, filling said chambers with a liquid plastic material at a temperature above the melting point of said plastic, allowing said plastic material to harden, and removing said hose from said mold with the solid plastic material forming shaped bumper members on the surface of said hose, each of said bumper members retaining the shape of the chamber in which it was formed and gripping the external surface of said hose with a shrink fit resulting from the thermal contraction of said plastic material around the outer surface of said hose.
Claim 2
Independent Claim
158 words
A method of forming an abrasion resistant hose assembly comprising the sequential steps of selecting a length of flexible hose having an outer surface, securing metallic hose fittings to each end of said hose, placing said hose in a mold formed to receive a portion of said hose interspacing the ends of the hose and including a plurality of chambers extending circumferentially around said hose in said mold, filling said chambers with a liquid plastic material at a temperature above the melting point of said plastic, allowing said plastic material to harden, and removing said hose from said mold with the solid plastic material forming shaped bumper members on the surface of said hose, each of said bumper members retaining the shape of the chamber in which it was formed and gripping the external surface of said hose with a shrink fit resulting from the thermal contraction of said plastic material around the outer surface of said hose.
Claim 3
Dependent Claim
76 words
The method of forming an abrasion resistant hose assembly as set forth in claim 1 wherein said outer surface has longitudinally extending serrations therein and the step of filling said chambers with a liquid plastic material includes disposing a portion of said plastic material into said serrations within said bumper members to provide said bumper members with an internal surface which is mechanically interlocked with said outer surface thereby fixing said bumper members against relative rotation.
Claim 4
Independent Claim
155 words
A method of forming an abrasion resistant hose assembly comprising first securing metallic end fittings to the ends of a length of flexible hose and then frictionally locking a plurality of bumper members about said hose at spaced locations intermediate the ends thereof, the step of frictionally locking said bumper members about said hose including providing a mold having a plurality of chambers arranged to close circumferentially around said hose at spaced locations interspacing the ends thereof, placing said hose in said mold, filling said chambers with a liquid plastic material which contracts upon solidification, causing said plastic material to solidify and contract to form said bumper members and secure them to said hose solely by the frictional forces developed intermediate the internal surface of said bumper members and the outer surface of said hose upon contraction of said plastic material, and removing said hose with said bumper members frictionally locked thereto from said mold.
Claim 5
Independent Claim
155 words
A method of forming an abrasion resistant hose assembly comprising first securing metallic end fittings to the ends of a length of flexible hose and then frictionally locking a plurality of bumper members about said hose at spaced locations intermediate the ends thereof, the step of frictionally locking said bumper members about said hose including providing a mold having a plurality of chambers arranged to close circumferentially around said hose at spaced locations interspacing the ends thereof, placing said hose in said mold, filling said chambers with a liquid plastic material which contracts upon solidification, causing said plastic material to solidify and contract to form said bumper members and secure them to said hose solely by the frictional forces developed intermediate the internal surface of said bumper members and the outer surface of said hose upon contraction of said plastic material, and removing said hose with said bumper members frictionally locked thereto from said mold.
Claim 6
Dependent Claim
76 words
The method of forming an abrasion resistant hose assembly as set forth in claim 3 wherein said outer surface has longitudinally extending serrations therein and the step of filling said chambers with a liquid plastic material includes disposing a portion of said plaStic material into said serrations within said bumper members to provide said bumper members with an internal surface which is mechanically interlocked with said outer surface thereby fixing said bumper members against relative rotation.
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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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |