Mitsuboshi Belting Ltd.

Mitsubishi Belting Ltd.

Tsuneo Shaura

Hiroyuki Tanaka

Takashi Tomiyori

Kazumi Kawai

Masanori Ikemoto

Kaname Shirasaka

Yoshihiro Nakagami

Hideo Hirai

Kuniharu Uto

Motonobu Yasuhuku

A power transmission toothed belt drive having a belt tooth power transmission surface defined by an arc having a radius centered on a point approximately one-half the belt tooth pitch from the centerline of the tooth. The pulley groove has a sidewall surface which confronts the power transmission surface of the belt tooth centered on the same point when the belt tooth is fully meshed with the pulley groove in the operation of the drive. A relatively small clearance with the pulley is provided adjacent the belt tooth root and a relatively large clearance is provided between the pulley groove inner surface and the tip surface of the belt tooth. In one form of the invention, both the power transmission surface and tip surface of the belt tooth are defined by a single radius and the confronting pulley groove sidewall surface and inner surface confronting the belt tooth power transmission surface and tip surface have a constant clearance therewith and are defined by continuous circular arcs.

Power transmission toothed belt and drive

A belt drive having a belt provided with longitudinally spaced teeth arranged to have a preselected clearance between the side flanks thereof and the side flanks of pulley teeth with which the belt teeth are meshed in a driving operation. The clearance is caused to be a maximum at the belt tooth tips and decrease to a minimum or zero at the belt tooth roots. Different belt tooth side flank curvatures are disclosed wherein the curvatures are centered on axes located at different locations relative to the belt body. The locations of the pulley tooth flank curvature axes are related to the positions of the belt tooth flank curvature axes and a number of different relative positions thereof are disclosed.

Toothed drive belt

A method is provided for manufacturing a bias fabric provided with characteristic physical properties by continuously varying the intersecting angle between the warp and the weft by a mechanical device. A fabric subjected to the process according to the invention can be any type of fabric woven on conventional looms such as satin, twill, plain and duplex fabrics. The principal part of the apparatus according to the invention is comprised of a fabric supplying device, a resin impregnating device to apply resin to a fabric for the purpose of fixing the bias structure produced by deforming the orthogonal structure of the original fabric, a heat setting oven to heat set the resin impregnated fabric, a pair of endless tenter chains provided with needle blocks to hold the fabric at the selvages, each of the endless tenter chains comprising an arched part whereby the intersecting angle between the warp and the weft is varied while the weft is maintained in the direction parallel with the original direction thus forming a bias structure, a device to release the fabric from the needle blocks and a take-up device to wind the bias fabric in a roll.

Method for manufacturing bias fabric

An apparatus is provided for manufacturing a bias fabric provided with characteristic physical properties by continuously varying the intersecting angle between the warp and the weft by a mechanical device. A fabric subjected to the invention can be any type of fabric woven on conventional looms such as satin, twill, plain and duplex fabrics. The principal part of the apparatus according to the invention is comprised of a fabric supplying device, a resin impregnating device to apply resin to a fabric for the purpose of fixing the bias structure produced by deforming the orthogonal structure of the original fabric, a heat setting oven to heat set the resin impregnated fabric, a pair of endless tenter chains provided with needle blocks to hold the fabric at the selvages, each of the endless tenter chains comprising an arched part whereby the intersecting angle between the warp and the weft is varied while the weft is maintained in the direction parallel with the original direction thus forming a bias structure, a device to release the fabric from the needle blocks and a take-up device to wind the bias fabric in a roll.

Apparatus for manufacturing bias fabric

Growing community of inventors

Kobe, Japan

Tsuneo Shaura