Patent US4132577A successfully refreshed from Google Patents.
US4132577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing hollow profiled structures, and structures produced thereby
Assignee: Individual
•
Filing: 1976-06-14
•
Granted: 1979-01-02
•
Expires: 1996-06-14
Abstract
Abstract In making a hard multi-tubular structure, one starts with a flat woven or knitted hose fabric comprising a plurality of side-by-side hoses; the hoses of the fabric are caused to expand and to set in their expanded configurations, which may be circular or substantially square in cross-section by a hardenable medium with which the fabric is impregnated or coated. Optionally, a hardenable covering and/or filling is provided over or in the hoses.
Inventors
- 👤 Erich Wintermantel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:56
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/28; E; E04; E04F; E04F13/00; E04F13/02; E04F13/04; E04F13/07; E04F13/08; E04F13/0885; E04F13/0887; F; F16; F16L; F16L59/00; F16L59/02; F16L59/026; F16L9/00; F16L9/18; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24157; Y10T428/24479; Y10T428/24562; Y10T428/24628; Y10T428/24661; Y10T428/24744
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
123 words
A method of making a hard multi-tubular structure which comprises: producing a flat hose fabric composed of a plurality of side-by-side abutting hoses, introducing uninflated foil tubes of thermoplastic shrink film into each of the hoses of the fabric, the tubes being of substantially the same length as the length of the fabric, inflating the tubes for expanding the hoses into formed hollow sections, treating the fabric with a hardening material, allowing hardening of the hardening material and setting of the fabric with the hoses in expanded condition, and leaving the tubes after setting of the hose fabric in the respective hollow sections free of any internal inflating pressure, and heating the resultant structure for the creation of perforations in the shrink film.
Claim 2
Independent Claim
123 words
A method of making a hard multi-tubular structure which comprises: producing a flat hose fabric composed of a plurality of side-by-side abutting hoses, introducing uninflated foil tubes of thermoplastic shrink film into each of the hoses of the fabric, the tubes being of substantially the same length as the length of the fabric, inflating the tubes for expanding the hoses into formed hollow sections, treating the fabric with a hardening material, allowing hardening of the hardening material and setting of the fabric with the hoses in expanded condition, and leaving the tubes after setting of the hose fabric in the respective hollow sections free of any internal inflating pressure, and heating the resultant structure for the creation of perforations in the shrink film.
Claim 3
Independent Claim
129 words
A method of making a hard multi-tubular structure which comprises: producing a flat hose fabric composed of a plurality of side-by-side abutting hoses, introducing uninflated foil tubes into each of the hoses of the fabric, the tubes being of substantially the same length as the length of the fabric, initially expending the hoses into circular cross section configurations, inflating the tubes for expanding the hoses into formed hollow sections, treating the fabric with a hardening material, allowing hardening of the hardening material and setting of the fabric with the hoses in expanded condition, after a partial setting of the fabric compressing the hoses each into substantially rectangular cross-section, and leaving the tubes after setting of the hose fabric in the respective hollow sections free of any internal inflating pressure.
Claim 4
Independent Claim
129 words
A method of making a hard multi-tubular structure which comprises: producing a flat hose fabric composed of a plurality of side-by-side abutting hoses, introducing uninflated foil tubes into each of the hoses of the fabric, the tubes being of substantially the same length as the length of the fabric, initially expending the hoses into circular cross section configurations, inflating the tubes for expanding the hoses into formed hollow sections, treating the fabric with a hardening material, allowing hardening of the hardening material and setting of the fabric with the hoses in expanded condition, after a partial setting of the fabric compressing the hoses each into substantially rectangular cross-section, and leaving the tubes after setting of the hose fabric in the respective hollow sections free of any internal inflating pressure.
Claim 5
Independent Claim
137 words
A method of making a hard multi-tubular structure which comprises: producing a flat hose fabric composed of a plurality of side-by-side abutting hoses initially expanding the hoses into configurations of circular cross section, introducing uninflated foil tubes into each of the hoses of the fabric, the tubes being of substantially the same length as the length of the fabric, inflating the tubes for expanding the hoses into formed hollow sections, treating the fabric with a hardening material, allowing hardening of the hardening material and setting of the fabric with the hoses in expanded condition, compressing the hoses at partial regions along their lengths into sections of substantially rectangular cross-section after a partial setting of the fabric, and leaving the tubes after setting of the hose fabric in the respective hollow sections free of any internal inflating pressure.
Claim 6
Independent Claim
137 words
A method of making a hard multi-tubular structure which comprises: producing a flat hose fabric composed of a plurality of side-by-side abutting hoses initially expanding the hoses into configurations of circular cross section, introducing uninflated foil tubes into each of the hoses of the fabric, the tubes being of substantially the same length as the length of the fabric, inflating the tubes for expanding the hoses into formed hollow sections, treating the fabric with a hardening material, allowing hardening of the hardening material and setting of the fabric with the hoses in expanded condition, compressing the hoses at partial regions along their lengths into sections of substantially rectangular cross-section after a partial setting of the fabric, and leaving the tubes after setting of the hose fabric in the respective hollow sections free of any internal inflating pressure.
Claim 7
Independent Claim
134 words
A method of making a hard multi-tubular structure which comprises: producing a flat hose fabric composed of a plurality of side-by-side abutting hoses, introducing uninflated foil tubes each of the hoses of the fabric, the tubes being of substantially the same length as the length of the fabric, inflating the tubes for expanding the hoses into formed hollow sections, treating the fabric with a hardening material, allowing hardness of the hardening material and setting of the fabric with the hoses in expanded condition, leaving the tubes after setting of the hose fabric in the respective hollow sections free of any internal inflating pressure and applying to the fabric in its set condition a covering which engages through the interstices the threads of the hose fabric to anchor the covering mechanically to the hose fabric.
Claim 8
Independent Claim
134 words
A method of making a hard multi-tubular structure which comprises: producing a flat hose fabric composed of a plurality of side-by-side abutting hoses, introducing uninflated foil tubes each of the hoses of the fabric, the tubes being of substantially the same length as the length of the fabric, inflating the tubes for expanding the hoses into formed hollow sections, treating the fabric with a hardening material, allowing hardness of the hardening material and setting of the fabric with the hoses in expanded condition, leaving the tubes after setting of the hose fabric in the respective hollow sections free of any internal inflating pressure and applying to the fabric in its set condition a covering which engages through the interstices the threads of the hose fabric to anchor the covering mechanically to the hose fabric.
Claim 9
Independent Claim
121 words
A method of making a hard multi-tubular structure which comprises: producing a flat hose fabric composed of a plurality of side-by-side abutting hoses, introducing uninflated foil tubes into each of the hoses of the fabric, the tubes being of substantially the same length as the length of the fabric, inflating the tubes for expanding the hoses into formed hollow sections, treating the fabric with a hardening material, allowing hardening of the hardening materials and setting of the fabric with the hoses in expanded condition, leaving the tubes after setting of the hose fabric in the respective hollow sections free of any internal inflating pressure, and filling the interiors of the hollow sections with a material similar to that of the covering.
Claim 10
Independent Claim
121 words
A method of making a hard multi-tubular structure which comprises: producing a flat hose fabric composed of a plurality of side-by-side abutting hoses, introducing uninflated foil tubes into each of the hoses of the fabric, the tubes being of substantially the same length as the length of the fabric, inflating the tubes for expanding the hoses into formed hollow sections, treating the fabric with a hardening material, allowing hardening of the hardening materials and setting of the fabric with the hoses in expanded condition, leaving the tubes after setting of the hose fabric in the respective hollow sections free of any internal inflating pressure, and filling the interiors of the hollow sections with a material similar to that of the covering.
References Cited (Backward Citations)
US2995781A
Cited
BE630654A
Cited
US3228822A
Cited
FR1335484A
Cited
US3307312A
Cited
US3388509A
Cited
US3560323A
Cited
US3530021A
Cited
US3565983A
Cited
US3629030A
Cited
US3641230A
Cited
US3544417A
Cited
US3813313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |