Abstract: A quick assembly bicycle stem structure includes a front fork stem, a handlebar stem having a zigzag-shaped slot opening formed at a lower end thereof that is received in an upper section of the front fork stem, the zigzag-shaped slot opening including a first vertical slot and a second vertical slot that are spaced apart in relation to one another, a pin bolt coupled to the front fork stem and extending into the zigzag-shaped slot opening of the handlebar stem, the pin bolt configured to travel within the zigzag-shaped slot opening and to enter the second vertical slot from the first vertical slot when the front fork stem is rotated relative to the handlebar stem, and a nut assembly received over the handlebar stem and configured to threadedly engage the upper section of the front fork stem.
Abstract: A pulsating imitation speaker includes a fixed cover, a flexible cover, and a motor and gear assembly having a motor with a motor shah, a first gear on a first axle, and a second gear on a second axle. The motor is drivingly engaged with the first gear via a pinion on the motor shaft and the first gear is drivingly engaged with the second gear such that when the pinion is rotated by the motor, the first and second gear also rotate. The pulsating imitation speaker further includes an actuator fixedly engaged with the flexible cover and a first and second circular member each engaged with the actuator and respectively positioned on opposite ends of the second axle such that the circular members rotate with the second gear. The actuator is reciprocated by rotation of the circular members such that the flexible cover moves relative to the fixed cover, when the motor is activated.
Type:
Grant
Filed:
June 14, 2017
Date of Patent:
April 30, 2019
Assignee:
Dynacraft BSC, Inc.
Inventors:
Huimin Lv, Bill Talios, David Castrucci, John Bisges