Honda Giken Kogyo Kabushiki Kaisha

Osamu Muto

Yoshiaki Hori

Masanori Masumura

Masaru Shirakura

Shoich Honda

A transmission includes a forward shift drum and an overlying and coaxial reverse shift drum. The drums are rotatable, but not longitudinally translatable with respect to each other. The drums each include lead grooves for guiding a shift fork pin therealong in portions of the grooves which overlap and intersect each other. When one of the lead grooves guides the shift fork pin into a gear position, the other lead groove serves as a stop, so that unintentional engagement of remaining gears with the drive shaft is prevented without the use of a separate special lock mechanism.

Transmission with reverse mechanism

A valve mechanism for a poppet valve of an internal combustion engine having a conventional cam and rocker arm control mechanism. Valve springs are positioned and compressed between the poppet valve and a valve spring retainer. The valve spring retainer moves relative to the engine head responsive to engine speed to further compress the valve springs with increased engine speed. A hydraulic controller operates through linkage employing a detent mechanism such that step-wise advancement of the valve spring retainer results to approximate an ideal engine speed versus valve spring force curve.

Growing community of inventors

Tokyo, Japan

Osamu Muto