A track start wedge includes a housing, a ratchet gear assembly, and a locking pawl assembly. The ratchet gear assembly is disposed at least partially within the housing and includes a bar, a pinion gear at each end of the bar, and a ratchet gear between the ends of the bar. The locking pawl assembly is coupled to the housing and includes a locking pawl disengageably coupled to the ratchet gear and a spring operable to bias the locking pawl into engagement with the ratchet gear. The ratchet gear assembly is configured to rotate in unison in a first direction toward a front of the housing and a second direction toward a rear of the housing, but the locking pawl prevents rotation of the ratchet gear in the second direction when the locking pawl is engaged with the ratchet gear.

A lifter device includes: an output shaft; a support member supporting the output shaft; an input member coupled to an operation handle; a feed portion transmitting forward and reverse rotation of the input member to the output shaft; a lock portion locking the rotation of the output shaft; and a friction generating portion applying a frictional force to the rotation of the output shaft. A rotating cam of the friction generating portion is a switching structure of switching to: a friction-suppression state when the operation handle is in a neutral position and when the operation handle is turned from the neutral position in a direction of raising the seat; and a friction-on state when the operation handle is turned from the neutral position in a direction of lowering the seat.

A rotary high lifter and controlled descender has a main housing enclosing a ratchet spool, controlled descender, and locking pawl. An adjustable crank turns the ratchet spool and takes up rope which raises an attached feeder, nestbox, etc. The locking pawl assures that as the rope is wound, the lifter/descender automatically locks in place so that an inadvertent crank release of the crank does not cause the feeder to fall. The rope exits the main housing via an inlet nipple which protects the housing from the elements, insects, etc. To lower the feeder, actuate a cam lock to release the locking pawl, and turn the crank in the opposite direction. Releasing the cam lock can actuate a controlled descender portion of the invention. These components apply a brake-pad-like action against the ratchet spool (can also use a tension knob) to control the speed of rotation and descent.

A speed bump and a speed bump transportation system are provided. The speed bump comprises: a base; a cover disposed opposite to the base and configured to be movable relative to the base; an electric-power generation device associated with the cover to scavenge energy through the cover and convert the energy into electrical energy; a first detection device for detecting a force condition of the cover and sending a first detection signal to a communication device when the cover is pressed; the communication device electrically connected to the first detection device and for sending a first communication signal when receiving the first detection signal, wherein the electric-power generation device is electrically connected to the communication device and the first detection device respectively to supply electric-power to the communication device and the first detection device.

The present disclosure relates to a mechanical converter of irregular bi-directional circular motion into continuous and consistent single direction circular motion through a system of gears, drive shafts, freewheels, and flywheel. The system works by transforming the circular movement, both clockwise and counterclockwise from the input shaft into continuous rotation of an output shaft through the use of a pair of free wheels solidly connected to the input shaft which transfers the alternating motion, depending on the rotation of the input shaft, to two parallel secondary shafts.

An oscillating reversible motor providing a novel means of converting oscillating motion into selectable clockwise or counterclockwise rotary motion. More particularly, the invention presents a novel approach to a foot or hand pedal driven apparatus with which a traditional rotary water propeller or other output device may be employed in both forward and reverse directions of relative motion.

A dual powered propulsion system for use with a human powered vehicle is provided. The system includes a connecting rod with a front end operatively coupled to yoke-connected forearm bars. The system also includes a splitter coupled to a rear end of the connecting rod, wherein the splitter is coupled to a first rack and a second rack that operate with a first and second pinion gear to turn a crank axle. This system supplies rotational power to the crank axle in a single rotational direction as the connecting rod is oscillated up and down and back and forth. Even though a solid connecting rod is used to transfer power from the oscillating forearm bars to the crank axle, the vehicle is steerable to the right or left as a result of the use of a carriage, on rollers, and a turning track operatively connected to the forearm bars.

A wave powered electricity generator is provided. Waves are separated from a floating platform unit by using a partition plate unit so that the floating platform unit enclosed by the partition plate unit is almost no wave. The waves outside the partition plate unit are to move many floating ball units up and down so that the racks provided on each of the floating ball units are capable of rotating the gears extending from the floating platform unit, and the rotational forces of gears are regulated through ratchets and consolidated to produce a power for driving generators. The racks on the floating ball units and the gears on the floating platform unit are pulled together by using springs. The resilient force of the two springs simultaneously helps the rack's up and down in smooth reciprocating motion. Then the gears directly and indirectly output a force to drive generators.

A ratcheting belt system with opposed rollers and quick release capability provides two opposed rollers which frictionally allow a tightening belt of a safety harness, cargo securement system, between themselves compressively, via a manually operated ratcheting handle such that the excess length of belt distal to the active portion used for securement is passed through the system substantially parallel to the active portion of belt, and need not be contained on a spool. A ratchet mechanism prevents back-out of the belt through the buckle, a manually operated lever provides for opening of the rollers away from each other and easy, quick exit of the driver, passenger, or cargo from securement.

A system for delivering an implant including a handle, a trigger, an actuation assembly, and a catheter assembly. The actuation assembly is configured to displace the outer tubular member in the proximal direction and to separately move the inner shaft member distally upon deployment of the trigger from the first position to the second position, and move the inner shaft member proximally with no displacement of the outer tubular member upon return of the trigger from the second position to the first position. The catheter assembly includes an outer tubular member, an inner shaft member, and a pusher assembly.