US3870478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a bias fabric
Assignee: Gates Rubber Co
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Filing: 1972-07-19
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Granted: 1975-03-11
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Expires: 1992-07-19
Abstract
Abstract A method of preparing a bias fabric from a tubular fabric having selvages, which method reduces or minimizes wrinkling or puckering of the fabric when it is reached, pantographed or calendered. The bias fabric is cut from the tubular fabric in a manner that controls occurrence of selvages across the width of the bias fabric.
Inventors
- 👤 Raymond A Rohlfing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:20
CPC Classifications
D; D06; D06H; D06H7/00; D06H7/10; D06H7/12; B; B29; B29D; B29D30/00; B29D30/06; B29D30/38; B29D2030/385; B29D2030/386; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T29/00; Y10T29/11; Y10T83/00; Y10T83/04; Y10T83/0596
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
A method of precluding occurrence of more than one selvage across the width of a strip of bias fabric comprising the steps of: helically cutting a length of flatly and generally squarely woven tubular fabric having two diametrically opposed and substantially parallel selvages, at least twice at a helical angle less than forty-five degrees and forming strips of bias fabric having cut widths such that the cut widths of the strips of bias fabric is less than the ratio of the selvage spacing to the cosine of the helical angle whereby only one selvage occurs across the bias fabric width at any point along the strip of bias fabric.
Claim 2
Independent Claim
109 words
A method of precluding occurrence of more than one selvage across the width of a strip of bias fabric comprising the steps of: helically cutting a length of flatly and generally squarely woven tubular fabric having two diametrically opposed and substantially parallel selvages, at least twice at a helical angle less than forty-five degrees and forming strips of bias fabric having cut widths such that the cut widths of the strips of bias fabric is less than the ratio of the selvage spacing to the cosine of the helical angle whereby only one selvage occurs across the bias fabric width at any point along the strip of bias fabric.
Claim 3
Independent Claim
109 words
A method of precluding occurrence of more than one selvage across the width of a strip of bias fabric comprising the steps of: helically cutting a length of flatly and generally squarely woven tubular fabric having two diametrically opposed and substantially parallel selvages, at least twice at a helical angle less than forty-five degrees and forming strips of bias fabric having cut widths such that the cut widths of the strips of bias fabric is less than the ratio of the selvage spacing to the cosine of the helical angle whereby only one selvage occurs across the bias fabric width at any point along the strip of bias fabric.
Claim 4
Independent Claim
109 words
A method of precluding occurrence of more than one selvage across the width of a strip of bias fabric comprising the steps of: helically cutting a length of flatly and generally squarely woven tubular fabric having two diametrically opposed and substantially parallel selvages, at least twice at a helical angle less than forty-five degrees and forming strips of bias fabric having cut widths such that the cut widths of the strips of bias fabric is less than the ratio of the selvage spacing to the cosine of the helical angle whereby only one selvage occurs across the bias fabric width at any point along the strip of bias fabric.
Claim 5
Independent Claim
97 words
A method of preparing a fabric, having selvages, for pantographing, comprising the steps of: helically cutting a length of flatly and generally squarely woven tubular fabric having two substantially equally spaced diametrical selvages, at a helical angle less than forty-five degrees and forming at least two strips of bias fabric each having a width that is maintained to be less than the ratio of the spacing between selvages to the cosine of the helical angle whereby only one selvage occurs across the width of the bias fabric at any given point along the strips of bias fabric.
Claim 6
Independent Claim
97 words
A method of preparing a fabric, having selvages, for pantographing, comprising the steps of: helically cutting a length of flatly and generally squarely woven tubular fabric having two substantially equally spaced diametrical selvages, at a helical angle less than forty-five degrees and forming at least two strips of bias fabric each having a width that is maintained to be less than the ratio of the spacing between selvages to the cosine of the helical angle whereby only one selvage occurs across the width of the bias fabric at any given point along the strips of bias fabric.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |