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US 4,359,355 AGranted
V-Belt
AssigneeThe Gates Rubber Company
InventorsAlfred L. Stecklein, Jerome M. Daugherty
Life of this patent
Estimating the term…
Abstract
A single or multiple strand molded notch V-belt and a method for its production is described. The method is characterized by use of an open-ended mold having rigid transverse notches and longitudinal ribs forming a plurality of mold cavities. The belt has undulating mold-formed notches which In one embodiment carry a fabric facing of a particular design to retard initiation and propagation of undercord cracks during operation of the belt around described sheaves.
Claims22
A method for forming a molded notch elastomeric endless power transmission belt in stepwise manner, comprising:
- forming a plurality of uncured belt segments individually having a load carrying section sandwiched between a tension and a compression section;
- adjacently disposing the belt segments, and interconnecting the belt segments with a tie band to form a belt preform;
- disposing the belt preform between juxtaposed portions of an open-ended mold having rigid continuously curved transverse notches and rigid longitudinal ribs separating the belt segments, and pressing the mold portions against the belt preform and heating to cure a section of the belt with notches mold formed in the compression section of adjacent belt segments;
- and
- advancing the belt preform successively to dispose an uncured section of the belt between the mold portions such that at least one notch mold formed from a previously cured belt section registers in a transverse mold notch, repeating this step as necessary until the belt is cured along its full perimeter.
2 more elements
A method for simultaneously forming a plurality of single strand molded notch endless power transmission belts, comprising:
- forming a plurality of uncured belt segments individually having a load carrying section sandwiched between a tension and a compression section;
- adjacently disposing the belt segments between juxtaposed portions of an open-ended multi-cavity mold having rigid continuously curved transverse notches and rigid longitudinal ribs separating the belt segments, and pressing the mold portions against the belt segments and heating to cure a section of each of the belt segments with notches mold formed in the compression section of adjacent belt segments;
- and
- advancing the plurality of belt segments together successively to dispose an uncured section of each of the belt segments between the mold portions such that at least one notch mold formed from a previously cured belt section of each belt segment registers in a transverse mold notch, repeating this step as necessary until the belt segments are cured along their full perimeters.
1 more element
A method for forming a molded notch elastomeric endless power transmission belt in stepwise manner, comprising:
- forming a plurality of uncured belt segments individually having a load carrying section sandwiched between a tension and a compression section;
- adjacently disposing the belt segments, and interconnecting the belt segments with a tie band to form a belt preform;
- disposing the belt preform between juxtaposed portions of an open-ended mold having rigid continuously curved transverse notches and rigid longitudinal ribs separating the belt segments, and pressing the mold portions against the belt preform and heating to cure a section of the belt with notches mold formed in the compression section of adjacent belt segments;
- and
- advancing the belt preform succesively to dispose an uncured section of the belt between the mold portions such that at least one notch mold formed from a previously cured belt section registers in a transverse mold notch, and upon disposing the last uncured section of the belt between the mold portions
- aligning mold formed notches of the belt adjacent such last uncured section with the notches of the mold by adjusting belt length as necessary.
3 more elements
A method for simultaneously forming a plurality of single strand molded notch endless power transmission belts, comprising:
- forming a plurality of uncured belt segments individually having a load carrying section sandwiched between a tension and a compression section;
- adjacently disposing the belt segments between juxtaposed portions of an open-ended multi-cavity mold having rigid continuously curved transverse notches and rigid longitudinal ribs separating the belt segments, and pressing the mold portions against the belt segments and heating to cure a section of each of the belt segments with notches mold formed in the compression section of adjacent belt segments;
- and
- advancing the plurality of belt segments together successively to dispose an uncured section of each of the belt segments between the mold portions such that at least one notch mold formed from a previously cured belt section of each belt segment registers in a transverse mold notch, and upon disposing the last uncured section of each of the belt segments between the mold portions
- aligning mold formed notches of the belt segments adjacent such last uncured section of the belt segments with the notches of the mold by adjusting belt segment length as necessary.
2 more elements
A method for forming a molded notch elastomeric endless power transmission belt in stepwise manner, comprising:
- forming a plurality of uncured belt segments of generally trapezoidal shape individually having a load carrying section sandwiched between a tension and a fiber-reinforced compression section;
- adjacently disposing the belt segments, and interconnecting the belt segments with a tie band to form a belt preform;
- disposing the belt preform between juxtaposed portions of an open-ended mold having rigid generally sinusoidal shaped transverse notches, with the sinusoid defining inclined notch ramp surfaces, and rigid longitudinal ribs separating the belt segments, and pressing the mold portions against the belt preform and heating to cure a section of the belt with notches mold formed in the compression section of adjacent belt segments, the notches having been formed by respective displacement of portions of the compression section of the belt preform toward and away from the load carrying section of the preform into conformance with the notch surface of the mold;
- and
- advancing the belt preform successively to dispose an uncured section of the belt between the mold portions such that at least one notch mold formed from a previously cured belt section registers in a transverse mold notch as the inclined ramp of the sinusoidal notch surface of the mold contacts a ramp surface of a previously cured belt section and registers therewith.
2 more elements
A method for simultaneously forming a plurality of single strand molded notch endless power transmission belts comprising:
- forming a plurality of uncured belt segments of generally trapezoidal shape individually having a load carrying section sandwiched between a tension and a fiber-reinforced compression section;
- adjacently disposing the belt segments between juxtaposed portions of an open-ended multicavity mold having rigid generally sinusoidal shaped transverse notches, with the sinusoid defining inclined notch ramp surfaces, and rigid longitudinal ribs separating the belt segments, and pressing the mold portions against the belt segments and heating to cure a section of each of the belt segments with notches mold formed in the compression section of adjacent belt segments, the notches having been formed by respective displacement of portions of the compression section of the belt segments toward and away from the load carrying section of the preform into conformance with the notch surface of the mold;
- and
- advancing the plurality of belt segments successively to dispose an uncured section of each of the belt segments between the mold portions such that at least one notch mold formed from a previously cured belt section registers in a transverse mold notch as the inclined ramp of the sinusoidal notch surface contacts a ramp surface between notches of a previously cured belt section and registers therewith.
1 more element
Dependencies are inferred from the claim text.