Patent US4253836A successfully refreshed from Google Patents.
US4253836A
Expired / Lapsed
US
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Mobius belt and method of making the same
Assignee: Dayco Products LLC
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Filing: 1979-09-14
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Granted: 1981-03-03
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Expires: 1999-09-14
Abstract
Abstract Endless power transmission belts of spliceless, Mobius strip construction comprising a continuous strength member embedded in an elastomeric material, together with methods for the manufacture of such belts, are provided.
Inventors
- 👤 Joseph P. Miranti, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:17
CPC Classifications
F; F16; F16G; F16G1/00; F16G1/06; F16G1/08; F16G1/10; B; B29; B29D; B29D29/00; B29D29/10; B29D29/103; F16G3/00; F16G3/10; F16G5/00; F16G5/20
Claims Analysis
Total Claims: 64
Claim 1
Independent Claim
125 words
A process for making an endless belt of spliceless, Mobius strip construction which comprises the steps of: (a) wrapping an elongate strip of elastomeric material around two spaced apart building supports; (b) turning one end of said strip through 180 degrees; (c) joining the two ends of said strip, thereby forming a Mobius strip; (d) winding a continuous strength cord in the form of a helix around said Mobius strip and across the entire width thereof, thereby providing, in effect, two layers of cord winding; (e) winding at least one layer of an elastomeric material around said cord winding to provide an assembly; and (f) applying heat and pressure to said assembly to make said elastomeric material flowable and to surround and embed said cord.
Claim 2
Dependent Claim
125 words
A process for making an endless belt of spliceless, Mobius strip construction which comprises the steps of: (a) wrapping an elongate strip of elastomeric material around two spaced apart building supports; (b) turning one end of said strip through 180 degrees; (c) joining the two ends of said strip, thereby forming a Mobius strip; (d) winding a continuous strength cord in the form of a helix around said Mobius strip and across the entire width thereof, thereby providing, in effect, two layers of cord winding; (e) winding at least one layer of an elastomeric material around said cord winding to provide an assembly; and (f) applying heat and pressure to said assembly to make said elastomeric material flowable and to surround and embed said cord.
Claim 3
Dependent Claim
32 words
The process of claim 1 further comprising the step of winding at least one layer of fabric around said assembly provided in said step (e) and thereafter carrying out said step (f).
Claim 4
Dependent Claim
31 words
The process of claim 1 wherein said step (f) is carried out using a profiled mold whereby the continuous surface of the finished belt has at least one inverted V profile.
Claim 5
Dependent Claim
25 words
The process of claim 1 further comprising the step of grinding the continuous surface of the finished belt into at least one inverted V profile.
Claim 6
Dependent Claim
33 words
The process of claim 1 wherein all said elastomeric material is a vulcanizable rubber and said step (f) comprises applying heat and pressure to vulcanize and coalesce said rubber, thereby embedding said cord.
Claim 7
Dependent Claim
10 words
The process of claim 5 wherein said rubber is neoprene.
Claim 8
Dependent Claim
32 words
The process of claim 1 wherein all said elastomeric material is a thermoplastic material and said step (f) comprises applying heat and pressure to coalesce said thermoplastic material, thereby embedding said cord.
Claim 9
Dependent Claim
12 words
The process of claim 7 wherein said thermoplastic material is a polyurethane.
Claim 10
Dependent Claim
11 words
The process of claim 7 wherein said thermoplastic material is EPDM.
Claim 11
Dependent Claim
133 words
A process for making an endless belt of spliceless, Mobius strip construction which comprises the steps of: (a) wrapping an elongate strip of an elastomeric material around two spaced apart building supports; (b) turning one end of said strip through 180 degrees; (c) joining the two ends of said strip, thereby forming a Mobius strip; (d) winding a continuous strength cord in the form of a helix around said Mobius strip and across one-half the width thereof; (e) passing said cord-wound strip between means for squeezing said cord into approximately a single plane; (f) winding at least one layer of an elastomeric material around said cord winding to provide an assembly; and (g) applying heat and pressure to said assembly to make said elastomeric material flowable and to surround and embed said cord.
Claim 12
Dependent Claim
133 words
A process for making an endless belt of spliceless, Mobius strip construction which comprises the steps of: (a) wrapping an elongate strip of an elastomeric material around two spaced apart building supports; (b) turning one end of said strip through 180 degrees; (c) joining the two ends of said strip, thereby forming a Mobius strip; (d) winding a continuous strength cord in the form of a helix around said Mobius strip and across one-half the width thereof; (e) passing said cord-wound strip between means for squeezing said cord into approximately a single plane; (f) winding at least one layer of an elastomeric material around said cord winding to provide an assembly; and (g) applying heat and pressure to said assembly to make said elastomeric material flowable and to surround and embed said cord.
Claim 13
Dependent Claim
32 words
The process of claim 10 further comprising the step of winding at least one layer of fabric around said assembly provided in said step (f) and thereafter carrying out said step (g).
Claim 14
Dependent Claim
31 words
The process of claim 10 wherein said step (f) is carried out using a profiled mold whereby the continuous surface of the finished belt has at least one inverted V profile.
Claim 15
Dependent Claim
25 words
The process of claim 10 further comprising the step of grinding the continuous surface of the finished belt into at least one inverted V profile.
Claim 16
Dependent Claim
33 words
The process of claim 10 wherein all said elastomeric material is a vulcanizable rubber and said step (g) comprises applying heat and pressure to vulcanize and coalesce said rubber, thereby embedding said cord.
Claim 17
Dependent Claim
10 words
The process of claim 14 wherein said rubber is neoprene.
Claim 18
Dependent Claim
32 words
The process of claim 10 wherein all said elastomeric material is a thermoplastic material and said step (g) comprises applying heat and pressure to coalesce said thermoplastic material, thereby embedding said cord.
Claim 19
Dependent Claim
12 words
The process of claim 16 wherein said thermoplastic material is a polyurethane.
Claim 20
Dependent Claim
11 words
The process of claim 16 wherein said thermoplastic material is EPDM.
Claim 21
Dependent Claim
133 words
A process for making an endless belt of spliceless, Mobius strip construction which comprises the steps of: (a) wrapping an elongate strip of an elastomeric material around two spaced apart building supports; (b) turning one end of said strip through 180 degrees; (c) joining the two ends of said strip, thereby forming a Mobius strip; (d) winding a continuous strength cord in the form of a helix around said Mobius strip and across one-half the width thereof; (e) winding at least one layer of an elastomeric material around said cord winding to provide an assembly; (f) passing the said assembly between means for squeezing said cord into approximately a single plane; and (g) applying heat and pressure to said assembly to make said elastomeric material flowable and to surround and embed said cord.
Claim 22
Dependent Claim
133 words
A process for making an endless belt of spliceless, Mobius strip construction which comprises the steps of: (a) wrapping an elongate strip of an elastomeric material around two spaced apart building supports; (b) turning one end of said strip through 180 degrees; (c) joining the two ends of said strip, thereby forming a Mobius strip; (d) winding a continuous strength cord in the form of a helix around said Mobius strip and across one-half the width thereof; (e) winding at least one layer of an elastomeric material around said cord winding to provide an assembly; (f) passing the said assembly between means for squeezing said cord into approximately a single plane; and (g) applying heat and pressure to said assembly to make said elastomeric material flowable and to surround and embed said cord.
Claim 23
Dependent Claim
32 words
The process of claim 19 further comprising the step of winding at least one layer of fabric around said assembly provided in said step (c) and thereafter continuing with said step (f).
Claim 24
Dependent Claim
31 words
The process of claim 19 wherein said step (f) is carried out using a profiled mold whereby the continuous surface of the finished belt has at least one inverted V profile.
Claim 25
Dependent Claim
25 words
The process of claim 19 further comprising the step of grinding the continuous surface of the finished belt into at least one inverted V profile.
Claim 26
Dependent Claim
33 words
The process of claim 19 wherein all said elastomeric material is a vulcanizable rubber and said step (g) comprises applying heat and pressure to vulcanize and coalesce said rubber, thereby embedding said cord.
Claim 27
Dependent Claim
10 words
The process of claim 23 wherein said rubber is neoprene.
Claim 28
Dependent Claim
32 words
The process of claim 19 wherein all said elastomeric material is a thermoplastic material and said step (g) comprises applying heat and pressure to coalesce said thermoplastic material, thereby embedding said cord.
Claim 29
Dependent Claim
12 words
The process of claim 25 wherein said thermoplastic material is a polyurethane.
Claim 30
Dependent Claim
11 words
The process of claim 25 wherein said thermoplastic material is EPDM.
Claim 31
Dependent Claim
127 words
A process for making an endless belt of spliceless, Mobius strip construction which comprises the steps of: (a) wrapping an elongate strip of calendered cord fabric having a length equal to at least two times the length of the finished belt around two spaced apart building supports; (b) turning one end of said strip through 180 degrees; (c) joining said turned end to a portion of said strip to form a closed loop and continuing to wrap the remainder of said strip around the thus-formed loop; (d) winding at least one layer of an elastomeric material around said cord fabric to provide an assembly; and (e) applying heat and pressure to said assembly to make said elastomeric material flowable and to surround and embed said cord fabric.
Claim 32
Dependent Claim
127 words
A process for making an endless belt of spliceless, Mobius strip construction which comprises the steps of: (a) wrapping an elongate strip of calendered cord fabric having a length equal to at least two times the length of the finished belt around two spaced apart building supports; (b) turning one end of said strip through 180 degrees; (c) joining said turned end to a portion of said strip to form a closed loop and continuing to wrap the remainder of said strip around the thus-formed loop; (d) winding at least one layer of an elastomeric material around said cord fabric to provide an assembly; and (e) applying heat and pressure to said assembly to make said elastomeric material flowable and to surround and embed said cord fabric.
Claim 33
Dependent Claim
32 words
The process of claim 28 further comprising the step of winding at least one layer of fabric around said assembly provided in said step (d) and thereafter carrying out said step (e).
Claim 34
Dependent Claim
31 words
The process of claim 28 wherein said step (f) is carried out using a profiled mold whereby the continuous surface of the finished belt has at least one inverted V profile.
Claim 35
Dependent Claim
25 words
The process of claim 28 further comprising the step of grinding the continuous surface of the finished belt into at least one inverted V profile.
Claim 36
Dependent Claim
33 words
The process of claim 28 wherein said elastomeric material is a vulcanizable rubber and said step (d) comprises applying heat and pressure to vulcanize and coalesce said rubber, thereby embedding said cord fabric.
Claim 37
Dependent Claim
10 words
The process of claim 32 wherein said rubber is neoprene.
Claim 38
Dependent Claim
31 words
The process of claim 28 wherein said elastomeric material is a thermoplastic material and said step (e) comprises applying heat and pressure to coalesce said thermoplastic material, thereby embedding said cord.
Claim 39
Dependent Claim
12 words
The process of claim 34 wherein said thermoplastic material is a polyurethane.
Claim 40
Dependent Claim
11 words
The process of claim 34 wherein said thermoplastic material is EPDM.
Claim 41
Dependent Claim
97 words
A process for making an endless belt of spliceless, Mobius strip construction which comprises the steps of: (a) providing a warp consisting essentially of at least one continuous warp cord wrapped generally in the form of a helix of predetermined length and width and having a 180 degree turn at a given location along the length thereof; (b) winding at least one layer of an elastomeric material around said cord winding to provide an assembly; and, (c) applying heat and pressure to said assembly to make said elastomeric material flowable and to surround and embed said cord.
Claim 42
Dependent Claim
97 words
A process for making an endless belt of spliceless, Mobius strip construction which comprises the steps of: (a) providing a warp consisting essentially of at least one continuous warp cord wrapped generally in the form of a helix of predetermined length and width and having a 180 degree turn at a given location along the length thereof; (b) winding at least one layer of an elastomeric material around said cord winding to provide an assembly; and, (c) applying heat and pressure to said assembly to make said elastomeric material flowable and to surround and embed said cord.
Claim 43
Dependent Claim
32 words
The process of claim 37 further comprising the step of winding at least one layer of fabric around said assembly provided in said step (b) and thereafter carrying out said step (c).
Claim 44
Dependent Claim
31 words
The process of claim 37 wherein said step (f) is carried out using a profiled mold whereby the continuous surface of the finished belt has at least one inverted V profile.
Claim 45
Dependent Claim
25 words
The process of claim 37 further comprising the step of grinding the continuous surface of the finished belt into at least one inverted V profile.
Claim 46
Dependent Claim
32 words
The process of claim 37 wherein said elastomeric material is a vulcanizable rubber and said step (c) comprises applying heat and pressure to vulcanize and coalesce said rubber, thereby embedding said cord.
Claim 47
Dependent Claim
10 words
The process of claim 41 wherein said rubber is neoprene.
Claim 48
Dependent Claim
31 words
The process of claim 37 wherein said elastomeric material is a thermoplastic material and said step (c) comprises applying heat and pressure to coalesce said thermoplastic material, thereby embedding said cord.
Claim 49
Dependent Claim
12 words
The process of claim 43 wherein said thermoplastic material is a polyurethane.
Claim 50
Dependent Claim
11 words
The process of claim 43 wherein said thermoplastic material is EPDM.
Claim 51
Dependent Claim
75 words
An endless belt of spliceless, Mobius strip construction having a 180 degree turn in the surfaces thereof for providing, in effect, one spliceless continuous surface and one spliceless continuous edge of twice the predetermined length of said belt comprising a continuous strength cord wrapped generally in the form of a helix of predetermined length and width and having a 180 degree turn along the length thereof, and an elastomeric material embedding and surrounding said cord.
Claim 52
Dependent Claim
75 words
An endless belt of spliceless, Mobius strip construction having a 180 degree turn in the surfaces thereof for providing, in effect, one spliceless continuous surface and one spliceless continuous edge of twice the predetermined length of said belt comprising a continuous strength cord wrapped generally in the form of a helix of predetermined length and width and having a 180 degree turn along the length thereof, and an elastomeric material embedding and surrounding said cord.
Claim 53
Dependent Claim
23 words
The belt of claim 46 wherein said cord is wrapped across the entire width of said belt, thereby providing two layers of cord.
Claim 54
Dependent Claim
21 words
The belt of claim 46 further comprising a layer of fabric bonded to said elastomeric material and defining said continuous surface.
Claim 55
Dependent Claim
24 words
The belt of claim 46 wherein said cord is wrapped across one-half the width of said belt, thereby providing a single layer of cord.
Claim 56
Dependent Claim
20 words
The belt of claim 49 wherein all of the helical windings of said cord lie in approximately the same plane.
Claim 57
Dependent Claim
17 words
The belt of claim 49 wherein the helical windings of said cord lie in two distinct planes.
Claim 58
Dependent Claim
16 words
The belt of claim 46 wherein said continuous surface has at least one inverted V profile.
Claim 59
Dependent Claim
21 words
The belt of claim 52 further comprising a plurality of transverse projections and recesses along the endless path of said belt.
Claim 60
Dependent Claim
13 words
The belt of claim 46 wherein said elastomeric material is a vulcanizable rubber.
Claim 61
Dependent Claim
10 words
The belt of claim 54 wherein said rubber is neoprene.
Claim 62
Dependent Claim
11 words
The belt of claim 46 wherein said elastomeric material is thermoplastic.
Claim 63
Dependent Claim
12 words
The belt of claim 56 wherein said thermoplastic material is a polyurethane.
Claim 64
Dependent Claim
11 words
The belt of claim 56 wherein said thermoplastic material is EPDM.
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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) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |