US3860684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless belt making
Assignee: Gates Rubber Co
•
Filing: 1974-01-10
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Granted: 1975-01-14
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Expires: 1994-01-10
Abstract
Abstract A method of curing belt sleeves or bands of endless belts in an open-end press by partially curing a circumferential segment of the sleeve between platens of the press, incrementally advancing the sleeve a portion of the way between platens overlapping the segment and repeating the steps of partially curing and advancing the sleeve until the sleeve is effectively cured.
Inventors
- 👤 Sr James C Vance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:38
CPC Classifications
B; B29; B29D; B29D29/00; B29K; B29K2021/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
191 words
A method for curing a power transmission belt sleeve in an open ended press comprising the steps of: supporting the sleeve at spaced points on its inner periphery; moving the supporting points apart tensioning the belt sleeve; pressurizing and heating at least one circumferential initial segment of the sleeve while simultaneously molding the initial segment to a predetermined thickness and cooling the belt sleeve adjacent the initial segment; partially curing the initial segment; pressurizing and heating successive circumferential segments of the sleeve while simultaneously molding the segments to the thickness and cooling the sleeve adjacent each segment, each successive segment overlapping at least half of its preceding segment; incrementally curing the successive segments, each successive segment receiving generally a 100 percent effective cure after complete overlapping by successive segments; pressurizing and heating at least a portion of the initial segment by overlapping with at least one of the successive segments, while simultaneously molding the successive segments to the thickness and cooling the sleeve adjacent the successive segments; and incrementally curing the initial segment, in conjunction with the overlapping successive segments effecting at least a 100 percent cure of the initial segment.
Claim 2
Independent Claim
191 words
A method for curing a power transmission belt sleeve in an open ended press comprising the steps of: supporting the sleeve at spaced points on its inner periphery; moving the supporting points apart tensioning the belt sleeve; pressurizing and heating at least one circumferential initial segment of the sleeve while simultaneously molding the initial segment to a predetermined thickness and cooling the belt sleeve adjacent the initial segment; partially curing the initial segment; pressurizing and heating successive circumferential segments of the sleeve while simultaneously molding the segments to the thickness and cooling the sleeve adjacent each segment, each successive segment overlapping at least half of its preceding segment; incrementally curing the successive segments, each successive segment receiving generally a 100 percent effective cure after complete overlapping by successive segments; pressurizing and heating at least a portion of the initial segment by overlapping with at least one of the successive segments, while simultaneously molding the successive segments to the thickness and cooling the sleeve adjacent the successive segments; and incrementally curing the initial segment, in conjunction with the overlapping successive segments effecting at least a 100 percent cure of the initial segment.
Claim 3
Dependent Claim
42 words
A method as set forth in claim 1 and further including the steps of: dividing the sleeve into a plurality of generally equal circumferential lengths and overlapping the initial and successive segments generally equal fractional amounts of the generally equal circumferential length.
Claim 4
Dependent Claim
29 words
A method as set forth in claim 1 including moving the supporting points apart to a predetermined length prior to the step of pressurizing and heating the initial segment.
Claim 5
Dependent Claim
20 words
A method as set forth in claim 1 including cooling the belt sleeve while rotating it about the supporting points.
Claim 6
Independent Claim
187 words
A method for curing a power transmission belt in an open-ended press comprising the steps of: supporting the belt at spaced points on its inner periphery; moving the supporting points apart tensioning the belt; pressurizing and heating at least one cirumferential initial segment of the belt while simultaneously molding the initial segment to a predetermined shape and cooling the belt adjacent the initial segment; partially curing the initial segment; pressurizing and heating successive circumferential segments of the belt while simultaneously molding the segments to the thickness and cooling the belt adjacent each segment, each successive segment overlapping at least half of its preceding segment; incrementally curing the successive segments, each successive segment receiving generally a 100 percent effective cure after complete overlapping by successive segments; pressurizing and heating at least a portion of the initial segment by overlapping with at least one of the successive segments, while simultaneously molding the successive segments to the thickness and cooling the belt adjacent the successive segments; and incrementally curing the initial segment, in conjunction with the overlapping successive segments effecting at least a 100 percent cure of the initial segment.
Claim 7
Independent Claim
187 words
A method for curing a power transmission belt in an open-ended press comprising the steps of: supporting the belt at spaced points on its inner periphery; moving the supporting points apart tensioning the belt; pressurizing and heating at least one cirumferential initial segment of the belt while simultaneously molding the initial segment to a predetermined shape and cooling the belt adjacent the initial segment; partially curing the initial segment; pressurizing and heating successive circumferential segments of the belt while simultaneously molding the segments to the thickness and cooling the belt adjacent each segment, each successive segment overlapping at least half of its preceding segment; incrementally curing the successive segments, each successive segment receiving generally a 100 percent effective cure after complete overlapping by successive segments; pressurizing and heating at least a portion of the initial segment by overlapping with at least one of the successive segments, while simultaneously molding the successive segments to the thickness and cooling the belt adjacent the successive segments; and incrementally curing the initial segment, in conjunction with the overlapping successive segments effecting at least a 100 percent cure of the initial segment.
Claim 8
Dependent Claim
42 words
A method as set forth in claim 5 and further including the steps of: dividing the sleeve into a plurality of generally equal circumferential lengths and overlapping the initial and successive segments generally equal fractional amounts of the generally equal circumferential length.
Claim 9
Dependent Claim
29 words
A method as set forth in claim 3 including moving the supporting points apart to a predetermined length prior to the step of pressurizing and heating the initial segment.
Claim 10
Dependent Claim
20 words
A method as set forth in claim 5 including cooling the belt sleeve while rotating it about the supporting points.
Claim 11
Dependent Claim
208 words
In a method for curing belt sleeves of the type having the process steps of supporting a sleeve at spaced points on its inner periphery, tensioning the sleeve by moving the supports apart, and curing circumferential portions of the sleeve, the improvement in curing the circumferential portions of the sleeve comprising the steps of: pressurizing and heating at least one circumferential initial segment of the sleeve while simultaneously molding the initial segment to a predetermined thickness and cooling the belt sleeve adjacent the initial segment; partially curing the initial segment; pressurizing and heating successive circumferential segments of the sleeve while simultaneously molding the segments to the thickness and cooling the sleeve adjacent each segment, each successive segment overlapping at least half of its preceeding segment; incrementally curing the successive segments, each successive segment receiving generally a 100 percent effective cure after complete overlapping by successive segments; pressurizing and heating at least a portion of the initial segment by overlapping with at least one of the successive segments, while simultaneously molding the successive segments to the thickness and cooling the sleeve adjacent the successive segments; and incrementally curing the initial segment, in conjunction with the overlapping successive segments effecting at least a 100 percent cure of the initial segment.
Claim 12
Dependent Claim
208 words
In a method for curing belt sleeves of the type having the process steps of supporting a sleeve at spaced points on its inner periphery, tensioning the sleeve by moving the supports apart, and curing circumferential portions of the sleeve, the improvement in curing the circumferential portions of the sleeve comprising the steps of: pressurizing and heating at least one circumferential initial segment of the sleeve while simultaneously molding the initial segment to a predetermined thickness and cooling the belt sleeve adjacent the initial segment; partially curing the initial segment; pressurizing and heating successive circumferential segments of the sleeve while simultaneously molding the segments to the thickness and cooling the sleeve adjacent each segment, each successive segment overlapping at least half of its preceeding segment; incrementally curing the successive segments, each successive segment receiving generally a 100 percent effective cure after complete overlapping by successive segments; pressurizing and heating at least a portion of the initial segment by overlapping with at least one of the successive segments, while simultaneously molding the successive segments to the thickness and cooling the sleeve adjacent the successive segments; and incrementally curing the initial segment, in conjunction with the overlapping successive segments effecting at least a 100 percent cure of the initial segment.
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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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |