US4586973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making belt
Assignee: Dayco Products LLC
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Filing: 1985-01-14
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Granted: 1986-05-06
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Expires: 2005-01-14
Abstract
Abstract A belt construction and method of making the same are provided, the belt construction comprising a tensile member intermediate the opposed sides of the belt construction, a plurality of teeth defining one of the opposed sides of the belt construction and being mainly formed of a first polymeric material that has reinforcing fibers therein, each tooth having opposed sides that are disposed in spaced relation to adjacent sides of adjacent teeth, the belt construction having a land area between adjacent teeth, and a backing member defining the other of the opposed sides of the belt construction, the backing member being mainly formed from a second polymeric material that is initially separate from the material of the teeth and is substantially free of fibers therein, the material of the backing member having a surface that joins with a surface of each tooth whereby the joining surfaces define an interface line therebetween, the interface line for each tooth extending from the tensile member at a point inboard of one of the opposed sides of the respective tooth into the medial portion of the respective tooth and then back to the tensile member at a point inboard of the other of the opposed sides of the respective tooth whereby part of the material of the backing member defines part of the medial portion of each tooth, the surface of the backing member also joining with a surface of the first material in each land area whereby the joining surfaces in each land area define an interface line therebetween, the interface line in each land area having a portion thereof disposed spaced from the tensile member on the side thereof opposite to the side thereof that faces toward the teeth.
Inventors
- 👤 Richard L. Marsh
- 👤 Robert E. Wetzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:27
CPC Classifications
F; F16; F16G; F16G1/00; F16G1/28; B; B29; B29K; B29K2021/00; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
356 words
In a method of making a belt construction having opposed sides and comprising a tensile member intermediate said opposed sides, a plurality of teeth defining one of said opposed sides of said belt construction and being mainly formed of a first polymeric material that has reinforcing fibers disposed substantially homogeneously therein, each tooth having opposed sides that are disposed in spaced relation to adjacent sides of adjacent teeth, and a backing member defining the other of said opposed sides of said belt construction, said backing member being mainly formed from a second polymeric material that is initially separate from said material of said teeth, said material of said backing member having a surface that joins with a surface of each tooth whereby said joining surfaces define an interface line therebetween, said interface line for each tooth extending from said tensile member at a point inboard of one of said opposed sides of the respective tooth into the medial portion of said respective tooth and then back to said tensile member at a point inboard of the other of said opposed sides of said respective tooth whereby part of said material of said backing member defines part of the medial portion of each tooth, the improvement comprising the steps of providing a grooved drum, disposing said tensile member about said drum, then disposing said first polymeric material about said tensile member, then disposing said second polymeric material about said first polymeric material whereby said second polymeric material is still separate from said first polymeric material, and then subjecting said drum to heat and pressure to cause said first and second materials to be forced toward said drum whereby said first material exudes through said tensile member adjacent said grooves and into said grooves and said second material exudes through said tensile member adjacent said grooves and into said grooves to define said interface line for each tooth and whereby said first and second materials form said interface line in each land area to have a portion thereof disposed spaced from said tensile member on the side thereof opposite to the side thereof that faces toward said teeth.
Claim 2
Dependent Claim
356 words
In a method of making a belt construction having opposed sides and comprising a tensile member intermediate said opposed sides, a plurality of teeth defining one of said opposed sides of said belt construction and being mainly formed of a first polymeric material that has reinforcing fibers disposed substantially homogeneously therein, each tooth having opposed sides that are disposed in spaced relation to adjacent sides of adjacent teeth, and a backing member defining the other of said opposed sides of said belt construction, said backing member being mainly formed from a second polymeric material that is initially separate from said material of said teeth, said material of said backing member having a surface that joins with a surface of each tooth whereby said joining surfaces define an interface line therebetween, said interface line for each tooth extending from said tensile member at a point inboard of one of said opposed sides of the respective tooth into the medial portion of said respective tooth and then back to said tensile member at a point inboard of the other of said opposed sides of said respective tooth whereby part of said material of said backing member defines part of the medial portion of each tooth, the improvement comprising the steps of providing a grooved drum, disposing said tensile member about said drum, then disposing said first polymeric material about said tensile member, then disposing said second polymeric material about said first polymeric material whereby said second polymeric material is still separate from said first polymeric material, and then subjecting said drum to heat and pressure to cause said first and second materials to be forced toward said drum whereby said first material exudes through said tensile member adjacent said grooves and into said grooves and said second material exudes through said tensile member adjacent said grooves and into said grooves to define said interface line for each tooth and whereby said first and second materials form said interface line in each land area to have a portion thereof disposed spaced from said tensile member on the side thereof opposite to the side thereof that faces toward said teeth.
Claim 3
Dependent Claim
44 words
A method of making a belt construction as set forth in claim 1 and including the step of disposing a fabric layer about said drum before said step of disposing said tensile member whereby said fabric layer covers said opposed sides of each tooth.
Claim 4
Dependent Claim
67 words
A method of making a belt construction as set forth in claim 1 and including the step of forming said first polymeric material to comprise two separate layers of superimposed polymeric material disposed about said drum with said fibers thereof being disposed substantially homogeneously in the respective layer and which layers remain separate from each other until the step of subjecting said drum to heat and pressure.
Claim 5
Dependent Claim
37 words
A method of making a belt construction as set forth in claim 3 and including the step of forming one of said two layers of said first polymeric material to be thinner than the other layer thereof.
Claim 6
Dependent Claim
42 words
A method of making a belt construction as set forth in claim 4 and including the step of forming said one layer of said first polymeric material to be a different polymeric material than the polymeric material of said other layer thereof.
Claim 7
Dependent Claim
65 words
A method of making a belt construction as set forth in claim 3 and including the steps of orienting said fibers in one of said two layers so as to be substantially disposed in a first direction, and orienting said fibers in the other of said two layers so as to be substantially disposed in a second direction that is different than said first direction.
Claim 8
Dependent Claim
33 words
A method of making a belt construction as set forth in claim 6 and including the step of causing said first direction to be approximately at a right angle to said second direction.
Claim 9
Dependent Claim
36 words
A method of making a belt construction as set forth in claim 7 and including the step of causing said first direction to be a direction that extends generally between said opposed sides of each tooth.
Claim 10
Dependent Claim
38 words
A method of making a belt construction as set forth in claim 8 and including the step of forming said other layer to define said interface line with said second material and be thinner than said one layer.
Claim 11
Dependent Claim
62 words
A method of making a belt construction as set forth in claim 1 and including the step of forming said first polymeric material to have a greater flow rate through said tensile member than the flow rate of said second polymeric material through said tensile member and be a polymeric material that is different from the polymeric material of said second material.
Claim 12
Dependent Claim
44 words
A method of making a belt construction as set forth in claim 10 and including the step of disposing a fabric layer about said drum before said step of disposing said tensile member whereby said fabric layer covers said opposed sides of each tooth.
Claim 13
Dependent Claim
66 words
A method of making a belt construction as set forth in claim 10 and including the step of forming said first polymeric material to comprise two separate layers of superimposed polymeric material disposed about said drum that remain separate from each other until the step of subjecting said drum to heat and pressure and which have said fibers thereof disposed substantially homogeneously in the respective layer.
References Cited (Backward Citations)
US3078206A
Cited
US3404578A
Cited
US3535946A
Cited
JPS5584622A
Cited
US4235119A
Cited
JPS5891947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |