US3245852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making single ply and multi-ply corrugated hose
Assignee: Hoover Co
•
Filing: 1963-03-26
•
Granted: 1966-04-12
•
Expires: 1983-03-26
Abstract
No abstract record available.
Inventors
- 👤 Frank A Martin
- 👤 Andrew C Miller
- 👤 William E Ashbaugh
- 👤 Rodney D Murphy
- 👤 Mark W Helm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:29
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/18; B29C; B29C48/00; B29C48/15; B29C48/151; B29C48/03; B29C48/09; B29C48/12; B29C48/13; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE METHOD OF MAKING A SINGLE PLY FLIXIBLE HOSE COMPRISING, APPLYING A SHEATH OF AN ELASTOMERIC THERMOPLASTIC TO A METALLIC WIRE, COILING SAID SHEATHED WIRE INTO A CYLINDRICAL HELIX HAVING SPACED APART COIL TURNS WITH AN ORIGINAL PITCH, COMPRESSING SAID HELIX TO A PITCH LESS THAN SAID ORIGINAL PITCH, HEATING SAID HELIX TO SOFTEN SAID SHEATH TO A BONDING CONDITION, EXTRUDING A THIN ELASTOMERIC THERMOPLASTIC TUBE OVER SAID COMPRESSED HELIX, APPLYING SUCTION TO THE INTERIOR OF SAID TUBE AS IT IS EXTRUDED TO CAUSE THE WALLS THEREOF TO BE DRAWN INWARDLY BETWEEN SAID COIL TURNS INTO LOOPS TO FORM A CORRUGATED CARCASS AND TO CAUSE SAID SHEATH TO BE BONDED TO THE CRESTS OF THE CORRUGATIONS AND COOLING SAID CARCASS TO SET SAID TUBE IN ITS CORRUGATED FORM.
Claim 2
Independent Claim
128 words
THE METHOD OF MAKING A SINGLE PLY FLIXIBLE HOSE COMPRISING, APPLYING A SHEATH OF AN ELASTOMERIC THERMOPLASTIC TO A METALLIC WIRE, COILING SAID SHEATHED WIRE INTO A CYLINDRICAL HELIX HAVING SPACED APART COIL TURNS WITH AN ORIGINAL PITCH, COMPRESSING SAID HELIX TO A PITCH LESS THAN SAID ORIGINAL PITCH, HEATING SAID HELIX TO SOFTEN SAID SHEATH TO A BONDING CONDITION, EXTRUDING A THIN ELASTOMERIC THERMOPLASTIC TUBE OVER SAID COMPRESSED HELIX, APPLYING SUCTION TO THE INTERIOR OF SAID TUBE AS IT IS EXTRUDED TO CAUSE THE WALLS THEREOF TO BE DRAWN INWARDLY BETWEEN SAID COIL TURNS INTO LOOPS TO FORM A CORRUGATED CARCASS AND TO CAUSE SAID SHEATH TO BE BONDED TO THE CRESTS OF THE CORRUGATIONS AND COOLING SAID CARCASS TO SET SAID TUBE IN ITS CORRUGATED FORM.
References Cited (Backward Citations)
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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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |