US3028291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making spirally corrugated reinforced flexible hose
Assignee: Individual
•
Filing: 1959-08-26
•
Granted: 1962-04-03
•
Expires: 1979-08-26
Abstract
No abstract record available.
Inventors
- 👤 Fred T Roberts
- 👤 Robert E Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:55
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/18; B29K; B29K2021/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD FOR THE MANUFACTURE OF SPIRALLY CURRUGATED REINFORCED FLEXIBLE HOSE WHICH COMPRISES FORMING AN ELONGATED TUBULAR MEMBER OF ELASTOMERIC MATERIAL, FORMING AN ASSEMBLY BY POSITIONING OVER SAID MEMBER A PLURALITY OF SEPARATE LONGITUDINALLY SPACED REINFORCING MEMBERS EACH OF WHICH COMPRISES A PLURALITY OF LONGITUDINALLY SPACED HELICAL WIRE TURNS, EACH OF SAID REINFORCING MEMBERS BEING SPACED FROM THE ADJACENT MEMBER BY A PREDETERMINED DISTANCE CORRESPONDING TO END COLLARS OF INDIVIDUAL LENGTHS OF HOSE TO BE CUT FROM SAID ELONGATED MEMBER, POSITIONING SAID TUBULAR MEMBER AND ITS SUPER IMPOSED REINFORCEMENT WITHIN A MOLD HAVING A SMOOTH CYLINDRICAL MOLDING SURFACE, EXPANDING SAID TUBULAR LAYER WITHIN SAID MOLD UNDER HEAT AND INTERNAL FLUID PRESSURE AND CAUSING SAID ELASTOMERIC MATERIAL TO FLOW AROUND SAID
Claim 2
Independent Claim
120 words
A METHOD FOR THE MANUFACTURE OF SPIRALLY CURRUGATED REINFORCED FLEXIBLE HOSE WHICH COMPRISES FORMING AN ELONGATED TUBULAR MEMBER OF ELASTOMERIC MATERIAL, FORMING AN ASSEMBLY BY POSITIONING OVER SAID MEMBER A PLURALITY OF SEPARATE LONGITUDINALLY SPACED REINFORCING MEMBERS EACH OF WHICH COMPRISES A PLURALITY OF LONGITUDINALLY SPACED HELICAL WIRE TURNS, EACH OF SAID REINFORCING MEMBERS BEING SPACED FROM THE ADJACENT MEMBER BY A PREDETERMINED DISTANCE CORRESPONDING TO END COLLARS OF INDIVIDUAL LENGTHS OF HOSE TO BE CUT FROM SAID ELONGATED MEMBER, POSITIONING SAID TUBULAR MEMBER AND ITS SUPER IMPOSED REINFORCEMENT WITHIN A MOLD HAVING A SMOOTH CYLINDRICAL MOLDING SURFACE, EXPANDING SAID TUBULAR LAYER WITHIN SAID MOLD UNDER HEAT AND INTERNAL FLUID PRESSURE AND CAUSING SAID ELASTOMERIC MATERIAL TO FLOW AROUND SAID
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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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |