A clutch unit includes an operation lever, an operation bracket, an output shaft member, an input-side clutch, an output-side clutch, and a housing. An input-side outer ring member of the input-side clutch is a member including a bottom part and an outer ring part. A part of the outer ring part is a thick part. The thickness of the thick part in the radial direction is larger than the thickness of a non-thick part in the radial direction.

The invention discloses a lower pair arc stop-block overrunning clutch comprising an outer rotating element, an inner rotating element, a friction block assembly, a wedge assembly, a first propeller assembly, a first elastic element and a synchronized push-block assembly, wherein a plurality of friction blocks of the friction block assembly are connected end to end and arranged between a first rotating ring and a second rotating ring; an drive element drives the first propeller assembly to press the synchronized push-block assembly to achieve synchronization of the friction block assembly; the first propeller assembly strikes the friction block assembly and is relatively stationary to push the friction block assembly for generating reverse rotation relative to a driven element; the wedge assembly is wedged to generate a radial pressure on the friction block assembly so that the friction block assembly can achieve lower pair arc stop, thereby achieving the transfer of torque.

The invention discloses a lower pair arc stop-block overrunning clutch comprising an outer rotating element, an inner rotating element, a friction block assembly, a wedge assembly, a first propeller assembly, a first elastic element and a synchronized push-block assembly, wherein a plurality of friction blocks of the friction block assembly are connected end to end and arranged between a first rotating ring and a second rotating ring; an drive element drives the first propeller assembly to press the synchronized push-block assembly to achieve synchronization of the friction block assembly; the first propeller assembly strikes the friction block assembly and is relatively stationary to push the friction block assembly for generating reverse rotation relative to a driven element; the wedge assembly is wedged to generate a radial pressure on the friction block assembly so that the friction block assembly can achieve lower pair arc stop, thereby achieving the transfer of torque.

In a permanently engaged starter system (20), a one-way clutch (40) is located between a starter motor (21) and a starter gear (54) for initiating the start of an internal combustion engine. The clutch (40) can include a starter gear (54), an outer race (56), an inner race (60), a roller cage (42) supporting a plurality of roller disks (46), and at least one spring (52). The roller cage (42) can include an enlarged inertia ring supported adjacent to a radially outwardly located peripheral edge (50) for retarding rotational movement of the roller cage (42) relative to the inner race (60) in response to acceleration of the starter motor (21). The spring (52) biases the roller cage (42) relative to the inner race (60) toward a disengaged clutch position, such that the plurality of roller disks (46) engage the inner race (60) and are spaced from the outer race surface (56).

In a permanently engaged starter system (20), a one-way clutch (40) is located between a starter motor (21) and a starter gear (54) for initiating the start of an internal combustion engine. The clutch (40) can include a starter gear (54), an outer race (56), an inner race (60), a roller cage (42) supporting a plurality of roller disks (46), and at least one spring (52). The roller cage (42) can include an enlarged inertia ring supported adjacent to a radially outwardly located peripheral edge (50) for retarding rotational movement of the roller cage (42) relative to the inner race (60) in response to acceleration of the starter motor (21). The spring (52) biases the roller cage (42) relative to the inner race (60) toward a disengaged clutch position, such that the plurality of roller disks (46) engage the inner race (60) and are spaced from the outer race surface (56).

A clutch carrier assembly for a transmission comprising: an axis of rotation, a clutch carrier outer ring concentric about the axis of rotation and having: an outer surface including undulating peaks; and, an inner surface including an axially extending stiffening rib portion; and, an outer race having a radially outward protrusion including a notch arranged for receiving and retaining the axially extending stiffening rib portion.

A clutch carrier assembly for a transmission comprising: an axis of rotation, a clutch carrier outer ring concentric about the axis of rotation and having: an outer surface including undulating peaks; and, an inner surface including an axially extending stiffening rib portion; and, an outer race having a radially outward protrusion including a notch arranged for receiving and retaining the axially extending stiffening rib portion.

A sprag one-way clutch (OWC) used within a cassette driver of the rear hub assembly of a bicycle. The new cassette driver delivers improved performance the reduction of rotation of the crank arm required before engagement within the cassette driver when the cyclist applies force to the pedals. Additionally, the sprag clutch smooth engagement minimizes friction loss during free-wheeling, therefore increasing drivetrain efficiency. These enhancements provide both safety and performance benefits by giving the cyclist greater control in moving between pedaling and free-wheeling. The current cassette driver design utilizes a sprag OWC for engagement without any modifications to current bicycle designs. A sprag cage may be used to provide a framework to support and properly position the sprags.

A sleeve-type freewheel having a sleeve with clamping ramps which are provided on the inner circumference and a plurality of needle-shaped or roller-shaped clamping bodies which are assigned to the clamping ramps, and a housing formed of lightweight metal and in which the sleeve is received, wherein the sleeve (2) has a radial flange (11), on which at least one radial projection (12) is provided, on which an axially projecting hook (16) is formed, and wherein a plurality of radially inwardly projecting contact sections (24) which are arranged distributed about the circumference are provided on the inner circumference of the housing (8), wherein the radial projection (12) is received between two contact sections (24) in the mounting position, wherein a groove (26) is formed between the contact sections (24) and a housing shoulder (25) which supports the radial flange (11) with the side (15) which has the hook (16), in which groove (26) the radial flange (11) is secured in a clamping manner with the hooked (16) being hooked on the housing shoulder (25) in the mounting position, in which the radial projection (12) bears against one contact section (24).

A sleeve-type freewheel having a sleeve with clamping ramps which are provided on the inner circumference and a plurality of needle-shaped or roller-shaped clamping bodies which are assigned to the clamping ramps, and a housing formed of lightweight metal and in which the sleeve is received, wherein the sleeve (2) has a radial flange (11), on which at least one radial projection (12) is provided, on which an axially projecting hook (16) is formed, and wherein a plurality of radially inwardly projecting contact sections (24) which are arranged distributed about the circumference are provided on the inner circumference of the housing (8), wherein the radial projection (12) is received between two contact sections (24) in the mounting position, wherein a groove (26) is formed between the contact sections (24) and a housing shoulder (25) which supports the radial flange (11) with the side (15) which has the hook (16), in which groove (26) the radial flange (11) is secured in a clamping manner with the hooked (16) being hooked on the housing shoulder (25) in the mounting position, in which the radial projection (12) bears against one contact section (24).