Patent US4489759A successfully refreshed from Google Patents.
US4489759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding hose
Assignee: Tigers Polymer Corp
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Filing: 1979-04-23
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Granted: 1984-12-25
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Expires: 1999-04-23
Abstract
Abstract A folding, bellows type, hose of synthetic resin includes a coil to from the chevrons thereof. The modulus of elasticity in bending of the synthetic resin hose wall is in the range of from 2.500 to 14.00 Kg/cm. The oblique portions of the hose wall is attached to the coil on one side thereof near a valley, and on the other side thereof near the crest of the chevron, throughout the whole length of hose.
Inventors
- 👤 Michio Yamamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:34
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/14; F16L11/16; B; B23; B23Q; B23Q11/00; B23Q11/08; B23Q11/0816; F16L11/04; F16L11/11; F16L11/115; Y; Y10; Y10S; Y10S138/00; Y10S138/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
158 words
A folding hose of the bellows-type including: hose wall of synthetic resin attached to a coil to form, in longitudinal cross-section, a series of chevrons and V-shaped valleys, said folding hose being characterized in that the modulus of elasticity in bending of the synthetic resin constituting the hose wall is in a range of 2.500 to 14.000 kg/cm 2 , wherein on one side of each chevron, when viewing the hose in cross-section, a first hose wall shoulder is attached to said coil at a position nearer an apex of the V-shaped valley and on the other side of said chevron a second hose wall shoulder is attached to the coil at a position nearer the crest of said chevron, with this condition existing substantially throughout the whole length of said hose, said V-shaped valley being characterized by having a distinct apex formed at the intersection of the first and second walls, said apex serving as as fulcrum.
Claim 2
Dependent Claim
158 words
A folding hose of the bellows-type including: hose wall of synthetic resin attached to a coil to form, in longitudinal cross-section, a series of chevrons and V-shaped valleys, said folding hose being characterized in that the modulus of elasticity in bending of the synthetic resin constituting the hose wall is in a range of 2.500 to 14.000 kg/cm 2 , wherein on one side of each chevron, when viewing the hose in cross-section, a first hose wall shoulder is attached to said coil at a position nearer an apex of the V-shaped valley and on the other side of said chevron a second hose wall shoulder is attached to the coil at a position nearer the crest of said chevron, with this condition existing substantially throughout the whole length of said hose, said V-shaped valley being characterized by having a distinct apex formed at the intersection of the first and second walls, said apex serving as as fulcrum.
Claim 3
Dependent Claim
30 words
A folding hose according to claim 1 wherein said hose wall forming said first shoulder of a chevron is made larger in thickness throughout the whole length of said hose.
Claim 4
Dependent Claim
28 words
A folding hose according to the claims 1 or 2 wherein the crest of said chevron is made greater in thickness throughout the whole length of said hose.
Claim 5
Dependent Claim
27 words
A folding hose as in claims 1 or 2 wherein the hose wall has a smaller thickness adjacent said second shoulder throughout the whole length of hose.
Claim 6
Dependent Claim
137 words
A folding hose of the bellows-type including a hose wall of synthetic resin attached to a coil to form, in longitudinal cross-section, a series of chevrons and V-shaped valleys, said folding hose being characterized in that the modulus of elasticity in bending of the synthetic resin constituting said hose wall is in a range of from 2.500 to 14.000 kg/cm 2 , on one side of each chevron, when the hose is viewed in longitudinal cross-section, a first hose wall shoulder is of a greater thickness than a second hose wall shoulder on the other side of said chevron, and this condition exists substantially throughout the whole length of said hose, said V-shaped valley being characterized by having a distinct apex formed at the intersection of the first and second walls, said apex serving as a fulcrum.
Claim 7
Dependent Claim
137 words
A folding hose of the bellows-type including a hose wall of synthetic resin attached to a coil to form, in longitudinal cross-section, a series of chevrons and V-shaped valleys, said folding hose being characterized in that the modulus of elasticity in bending of the synthetic resin constituting said hose wall is in a range of from 2.500 to 14.000 kg/cm 2 , on one side of each chevron, when the hose is viewed in longitudinal cross-section, a first hose wall shoulder is of a greater thickness than a second hose wall shoulder on the other side of said chevron, and this condition exists substantially throughout the whole length of said hose, said V-shaped valley being characterized by having a distinct apex formed at the intersection of the first and second walls, said apex serving as a fulcrum.
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) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |