Tricycle
AssigneeDaihatsu Motor Co., Ltd.
InventorsYano Kensaku, Kurose Makoto, Nagamitsu Toshiaki
Life of this patent
Estimating the term…
Abstract
A tricycle having a front and a rear frame swingingly connected with each other in an axis line longitudinal of a tricycle body and providing between both frames an elastic member serving to restore the front frame when it is leaned against the rear frame, which is adapted to make zero or minimum the increasing ratio of restoring force of the elastic member when the front frame is leaned under the predetermined angle of inclination, while, large when over the same angle, whereby the tricycle is made safe and improved in a turning efficiency.
Claims19
A tricycle having one front wheel and two rear wheels, comprising,
- a. a front frame which is supported with said front wheel, said front frame having an operating handle for the front wheel and a seat for a rider,
- b. a rear frame which is supported with said two rear wheels, said rear frame being provided with a driving equipment for driving at least one of said rear wheels,
- c. connecting means for swingingly movably connecting said front frame and said rear frame with each other, said connecting means being directed in the axis line extending longitudinally of a tricycle body comprising said front frame and said rear frame,
- d. an elastic member insertibly mounted to be supported between said front frame and said rear frame, said elastic member serving to restore the front frame from being leaned with respect to the rear frame, and
- e. a first and a second supporting means for supporting both ends of said elastic member to said front and rear frame respectively, said first supporting means fixing one end of said elastic member to one of said front and rear frame, said second supporting means allowing the other end of said elastic member to be movable relatively to the other frame in a given range, said elastic member being substantially not elastically distorted within the given range but elastically distorted over the same range.
Dependencies are inferred from the claim text.