Patent US4518018A successfully refreshed from Google Patents.
US4518018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced formed hose
Assignee: Flexible Technologies Inc
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Filing: 1980-06-02
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Granted: 1985-05-21
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Expires: 2000-06-02
Abstract
Abstract A preformed radiator hose and a method of manufacturing such a hose are disclosed herein. A long length of an uncured hose is first fabricated by alternately wrapping layers of an uncured elastomer and fiber reinforcements around a straight mandrel. The uncured hose is then removed from the straight mandrel and cut into shorter segments. Each of these segments is then placed on a contoured mandrel having a shape corresponding to the intended configuration of the final hose and cured by heating. Although the fully cured hose does have a permanent shape, because of the unique arrangement of the reinforcements, etc., it has sufficient deformability to be easily slipped off the mandrel.
Inventors
- 👤 Thomas A. Kutnyak
- 👤 George T. Dunn
- 👤 Chester L. Guiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:58
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/081; F16L11/082; F16L11/12; Y; Y10; Y10S; Y10S138/00; Y10S138/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
156 words
A permanently shaped, deformable reinforced hose formed with at least one curved portion, comprising: a first, innermost layer formed along an axis by a strip of elastomer helically wound edge to edge in a non-overlapping manner to form an essentially smooth and unbroken surface; a second, reinforcement layer formed by a plurality of spaced, parallel reinforcing strands helically wrapped around said first, innermost layer oppositely with respect to the direction of wrap of said first, innermost layer at an angle from about 20 degrees to about 30 degrees with respect to the perpendicular to the axis of said first, innermost layer; and a third layer formed by a strip of elastomer helically wound over and around said second, reinforcement layer, each of said layers being bonded together by heat curing into a single, monolithic structure which can be slidably removed from a mandrel without causing any substantial separation of said reinforcing strands from the adjacent layers.
Claim 2
Dependent Claim
156 words
A permanently shaped, deformable reinforced hose formed with at least one curved portion, comprising: a first, innermost layer formed along an axis by a strip of elastomer helically wound edge to edge in a non-overlapping manner to form an essentially smooth and unbroken surface; a second, reinforcement layer formed by a plurality of spaced, parallel reinforcing strands helically wrapped around said first, innermost layer oppositely with respect to the direction of wrap of said first, innermost layer at an angle from about 20 degrees to about 30 degrees with respect to the perpendicular to the axis of said first, innermost layer; and a third layer formed by a strip of elastomer helically wound over and around said second, reinforcement layer, each of said layers being bonded together by heat curing into a single, monolithic structure which can be slidably removed from a mandrel without causing any substantial separation of said reinforcing strands from the adjacent layers.
Claim 3
Dependent Claim
85 words
The hose according to claim 1, further comprising: a fourth, reinforcement layer formed by a plurality of spaced, parallel reinforcing strands helically wrapped around said third layer oppositely with respect to the direction of wrap of said second, reinforcement layer and at an angle from about 20 degrees to about 30 degrees with respect to the perpendicular to the axis of said first, innermost layer; and a fifth, outermost layer formed by a strip of elastomer helically wound over and around said fourth, reinforcement layer.
Claim 4
Dependent Claim
36 words
The hose according to claim 1 or 2, wherein the elastomer in each of said layers formed by a strip of elastomer is one of the group consisting of silicone rubber, silicone, polyisoprene, chloroprene, and ethylene/propylene.
Claim 5
Dependent Claim
16 words
The hose according to claim 1 or 2, wherein said reinforcing strands are silicone-coated fiberglass strands.
Claim 6
Dependent Claim
19 words
The hose according to claim 1 or 2, wherein said third layer is softer than said first, innermost layer.
Claim 7
Dependent Claim
16 words
The hose according to claim 1 or 2, wherein the cross-section of said hose is circular.
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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |