An electrically operated brake device includes an electric motor pressing friction member against a rotating member, and a returning mechanism moving the friction member in a direction away from the rotating member when the electric motor is not energized. The returning mechanism includes a spiral spring and a housing. The spiral spring includes a restraint section. The housing includes a holding surface. When the electric motor is rotated in a forward direction, the restraint section presses the holding surface, and the spiral spring gives a returning torque in a reverse direction. When the returning torque exceeds a predetermined torque, the restraint section slips out of the holding surface. The holding surface is inclined with respect to a normal line surface including a contact part between the restraint section and the holding surface and an axis line of the rotating shaft.

A spring assembly includes a resilient member having a first and second end shanks and a central helical portion. The first end shank extends in a first direction from the central helical portion, and has a longitudinal axis from a proximal end to a distal end. The second end shank extends in a second, opposite direction from the central helical portion, and has a longitudinal axis from a proximal end to a distal end. The central helical portion includes one or more coils disposed about a central longitudinal axis, and has a first end attached to the proximal end of the first end shank and a second end attached to the proximal end of the second end shank. The axes of the shank ends and the axis of the central helical portion are parallel or are collinear. The assembly also includes an attachment site at each of the end shanks.

A fastening device for assembly and quick release between objects includes a retaining device for an attachment element with a dockable portion. There is a plurality of separable parts held close together around the attachment element by at least one disengageable preloading mechanism. The preloading mechanism includes a link wound around the separable parts in order to hold them closed on the attachment element, which has the appearance of a ribbon wound in a spiral and has spring properties. The ribbon has a non-constant thickness, i.e. the thickness decreases from the inside towards the outside of the spiral. The thickness decreases with the angle of the spiral. It is manufactured as such, in its final form, by a manufacturing process employing either the removal of material by machining, or by aggregation of material.

Various embodiments include a check valve for a high-pressure component in a fuel injection system comprising: a valve housing with a valve hole having an inner diameter; a valve seat and a sealing element arranged in the valve hole; and a coil spring pushing the sealing element toward the valve seat along a longitudinal axis of the valve hole. The coil spring includes a plurality of coil turns each having an outer diameter. In a non-assembled state of the check valve, the outer diameter of at least one of the coil turns is greater than the inner diameter of at least a portion of the valve hole, so that in an assembled state of the check valve, the coil spring is secured in a force-fitting manner in the valve hole.

A coil spring integrally includes opposed extending ends to define a control rod for a damper. Thus, the spring and control rod are integrated into a one-piece structure. A friction rod damper includes a coil spring having a longitudinal axis, with the spring including a body and first and second extending ends which define a control rod for the damper. The extending ends terminate in attachments, and a damper member extends through the spring and having a first end secured to the first extending end of the spring in spaced relationship to the associated attachment. The damper member includes a second end with a container surrounding the second end of the spring in spaced relationship to the associated attachment. The container includes a damping element engaging the control rod to allow the spring to expand and contract under the damping action of the damping element.

A spring assembly includes a resilient member having a first and second end shanks and a central helical portion. The first end shank extends in a first direction from the central helical portion, and has a longitudinal axis from a proximal end to a distal end. The second end shank extends in a second, opposite direction from the central helical portion, and has a longitudinal axis from a proximal end to a distal end. The central helical portion includes one or more coils disposed about a central longitudinal axis, and has a first end attached to the proximal end of the first end shank and a second end attached to the proximal end of the second end shank. The axes of the shank ends and the axis of the central helical portion are parallel or are collinear. The assembly also includes an attachment site at each of the end shanks.

To provide a suspension coil spring capable of reducing a bowing amount and friction generated in a shock absorber, under a compressed state. A suspension coil spring (10) that is mounted between an upper seat (22) and a lower seat (24) in a strut suspension (12) for an automobile, includes an upper end turn (32) that sits on the upper seat (22); a spring active portion (11) that includes one or more coils each of which is formed such that a portion whose curvature is the largest is positioned at an automobile outer side under a mounted state; and a lower end turn (34) that sits on the lower seat (24) while substantially contacting the lower seat (24) at a single lower contacting point (P3) that is positioned at the automobile outer side with respect to a center point of the lower end turn (34).

The present disclosure discloses a variable torsion spring damping rotating shaft. The shaft includes a movable unit, a fixed unit, a first connection mechanism, a second connection mechanism, and a torsion spring; the fixed unit is detachable in inserting connection with the movable unit; the first connection mechanism is arranged inside the fixed unit, and the first connection mechanism is connected to an end of the fixed unit; the torsion spring is sleeved on the first connection mechanism, an end of the torsion spring is in inserting connection with the fixed unit, and another end of the torsion is in inserting connection with the movable unit; the second connection mechanism is arranged in the movable unit and is in cooperation with the first connection mechanism; and the second connection mechanism is configured to rotate on the first connection mechanism, to drive the movable unit to move towards the fixed unit.

A linear compressor includes one spring assembly including a plurality of spring parts fixed to both side surfaces of a supporter and a rear cover and configured to support a load generated in the compressor. In addition, both side portions of the spring part are provided with fixing brackets coupled to the supporter and the rear cover, and the fixing bracket is provided with an insertion member or a bracket coupling member so that the coupling force of the spring part can be increased.

A rotary spring-return actuator operator is provided with a multi-slot shaft and a clock type spring retained by a retaining band which encircles the spring in such a manner as to insure that the potential energy within the spring is safely contained during all operations requiring disassembly of the actuator assembly, and wherein the retaining band facilitates the in-field reversal of the spring direction or the adjustment of the spring preload by securing the spring to one or more of the slots on the multi-slot shaft.