A brake roller may comprise a brake shaft and a brake stack assembly located around the brake shaft. A one-way jaw clutch assembly may be configured to apply a force to the brake stack. A roller shell may be located radially outward of the brake stack. The one-way jaw clutch assembly may be configured to vary the force applied to the brake stack in response to a rotation of the roller shell in a circumferential direction.

A coil spring unit includes a coil spring; and a metal plate supporting the coil spring, the metal plate including a plurality of supporting portions cooperative with each other to support the coil spring, wherein the supporting portions are provided by bending the metal plate at bending lines and have supporting surfaces substantially perpendicular to the bending lines, respectively, and wherein the supporting surfaces are substantially parallel with outside tangential lines of the coil spring and support the coil spring.

A directional transmission mechanism, a directional sprocket apparatus using the directional transmission mechanism, and a pedal device using the directional sprocket apparatus are disclosed. The directional transmission mechanism includes a driving shaft, an output shaft, a co-rotating wheel, a reverse-rotating wheel, and a switching mechanism. The co-rotating wheel set drives the output shaft to rotate in a direction that is the same as that of the driving shaft. The reverse-rotating wheel set drives the output shaft to rotate in a direction opposite to that of the driving shaft. The switching mechanism switches the driving shaft to drive the co-rotating wheel set or drive the reverse-rotating wheel set to rotate, so as to enable the output shaft to rotate directionally. The co-rotating wheel set is connected with the driving shaft and the output shaft, and the reverse-rotating wheel set is connected with the driving shaft and the output shaft.

A charging mechanism for charging a stored-energy spring of a stored-energy spring mechanism includes a charging gear coupled to the stored-energy spring, an intermediate shaft coupled to the charging gear, an idler gear that can be driven by a charging motor, a freewheel coupled to the idler gear, and a dog clutch that couples the freewheel to the intermediate shaft in order to charge the stored-energy spring and uncouples same from the intermediate shaft in the charged state of the stored-energy spring. The dog clutch has a first clutch block coupled to the intermediate shaft for conjoint rotation, and a second clutch block connected to the freewheel. The first clutch block can be displaced along an axis of rotation of the intermediate shaft between two end positions and, in an intermediate position between the end positions can be freely rotated only in a direction of rotation with respect to the second clutch block.

A detachable feed roller for using in the automatic feeder includes: a rotating shaft provided with a first connection structure arranged at the end of the rotating shaft and an actuating part; a fixed feed roller arranged around the rotating shaft and driven by the rotating shaft; a one-way feed roller arranged around the rotating shaft and provided with a cam part; a transmitting rotor arranged around the rotating shaft and, the transmitting rotor being disposed between the actuating part and the cam part; wherein, the transmitting rotor is pushed toward the one-way feed roller while the rotating shaft rotates forward in accordance to the transmitting rotor; and pushed away from the one-way feed roller while the one-way feed roller rotates forward in accordance to the transmitting rotor.

A gear device for a clutch contains: a drive gear, a first clutching member, and a second clutching member. The drive gear includes multiple first actuation protrusions and multiple second actuation protrusions, wherein each of the multiple first actuation protrusions has a beveled face and a flat top face, and each of the multiple second actuation protrusions has a beveled face and a flat top face. The first clutching member includes multiple third actuation protrusions, each of the multiple third actuation protrusions has a beveled face and a flat top face, and the first clutching member includes a first positioning disc and a first resilient element. The second clutching member includes multiple fourth actuation protrusions, each of the multiple fourth actuation protrusions has a beveled face and a flat top face, and the second clutching member includes a second positioning disc and a second resilient element.

There is provided an internal-combustion-engine starting apparatus that eliminates the restriction that the portion of the output axle at the axial-direction anti-motor side needs to be narrower than the inner diameter of an inner ring portion and that eliminates the requirement that a member for restricting the output axle from traveling toward the axial-direction anti-motor side is added as an extra component. An internal-combustion-engine starting apparatus is characterized in that the outer helical spline includes an outer ridge portion, in that an inner helical spline includes a both-side opened recess groove portion and a one-side opened recess groove portion in that the outer ridge portion engages with the one-side opened recess groove portion, and in that the axial-direction length of the inner small-diameter portion is the same as or larger than the axial-direction length of the outer ridge portion.

A front propeller on a main shaft communicated from one end to an engine transmission; the propeller having a hub and a plurality of blades extending radially outwardly from the hub; a rear propeller co-axially to, and spaced apart from, the front propeller rearwardly in an axial direction having a hub and a plurality of blades extending radially outwardly from the hub. An adaptor is coaxial with the main shaft and comprising a second shaft for supporting the rear propeller. A plurality of pitched-formed seating surfaces having ramps, are spaced apart from the second shaft in an axial direction. An adaptor communicates with the rear side of the front propeller in the axial direction; a plurality of locking elements are movable in the axial direction, each being in contact with the seating surfaces of the adaptor, and communicate with the rear propeller from the other end.

A coil spring unit includes a coil spring; and a metal plate supporting the coil spring, the metal plate including a plurality of supporting portions cooperative with each other to support the coil spring, wherein the supporting portions are provided by bending the metal plate at bending lines and have supporting surfaces substantially perpendicular to the bending lines, respectively, and wherein the supporting surfaces are substantially parallel with outside tangential lines of the coil spring and support the coil spring.

The invention relates to pumping equipment and can be used in oil industry as part of submersible electric centrifugal pump units. Device for prevention of turbine rotation consists of interconnected head and base, inside of which two shafts are installed on bearing supportsupper and lower ones, connected to each other through a cam clutch with the possibility of free running in the circumferential direction. The overrunning clutch is installed in the head, providing torque transmission in the forward direction from the lower shaft to the upper one and preventing reverse rotation of the upper shaft. The overrunning clutch is connected with the upper shaft via a coupling clutch, movable part of which is mounted on the upper shaft with possibility of axial movement, and stationary part is rigidly connected to the overrunning clutch. Coupling of the coupling clutch is provided by a spring, and disconnection is provided by a pusher mounted on the upper shaft with possibility of axial movement, and on one side the pusher is connected to the movable part of the coupling clutch and on the other sidewith a bush sleeve having an inclined end surface rigidly installed on the lower shaft. The technical result is to increase reliability and safety of Electric Centrifugal Pumping Unit due to use of the apparatus for preventing rotation of the turbine.