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US 3,995,506 AGranted
Power transmission belt
OwnerNorman Poeinventor
Life of this patent
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OwnerNorman Poeinventor
Estimating the term…
A power transmission belt having the form of a Mobius strip with a single half twist consisting of a laminated structure assembled from a single strip of flexible material. The flexible material may be an adhesive tape or similar material having an adhesive surface on one side thereof, and a friction surface on the other side thereof. The laminated structure is assembled by first, forming an open loop with a first end portion of the flexible strip of material, and secondly, twisting said end portion 180.degree. about its longitudinal axis so as to place the adhesive surface of the twisted end in intimate face-to-face contact with the adhesive surface of a remaining portion of the flexible material, and thirdly, pressing together the adhesive surfaces of the remaining portion of the strip of material and the closed preformed loop in a manner whereby a laminated structure is formed from several congruent layers of said flexible material.
A power transmission belt having an odd number of half-twists consisting of a laminated structure assembled from a unitary strip of flexible material having an adhesive surface on one side thereof for holding together said laminae and a friction surface on a second side thereof for transmitting mechanical power.
A method of making a power transmission belt from a unitary strip of flexible material having an adhesive surface on one side thereof and an anti-slip surface on a second side thereof consisting of the steps of twisting a first end portion of the flexible strips of material on odd multiple of 180.degree. about its longitudinal axis, forming an open loop with said twisted first end portion, closing said loop by connecting the adhesive surface of the first end portion with the adhesive surface of a portion of the flexible strip of material, and joining the adhesive surface of the remainder of the flexible material with the adhesive surface of the preformed loop.
A power transmission belt having an odd number of half-twist consisting of a double laminated structure formed from a unitary strip of flexible material having an adhesive surface and a friction surface, a first end and a second end, a respective first half portion and a second half portion, a mid section which separates said respective first and second half portions and is disposed substantially in the middle of said single strip of flexible material, wherein said structure is formed by bending said first half portion of said material in the direction of the adhesive surface 360.degree. into a substantially circular disposition, twisting said first end portion associated with said first half portion 180.degree. about the longitudinal axis of said strip of flexible material, pressing together the adhesive surface of said first end portion onto the adhesive surface of the mid section of said strip of flexible material in a substantially aligned and congruent disposition, and continuing to press together the adhesive surface of said second half portion upon the adhesive surface of said first half portion in a substantially aligned and congruent manner beginning at said mid section and continuing along said second half portion until said second end portion is aligned with said first end portion on the adhesive surface at the mid section of said flexible strips of material.
Dependencies are inferred from the claim text.