A disk spring may include an annular base body, a central longitudinal axis of which defines an axial direction of the base body. A profile of the base body in a profile plane containing the central longitudinal axis may have a wave-shaped contour with two minima including a radially inner minimum and a radially outer minimum and with an intermediate maximum disposed between the two minima. The wave-shaped contour may extend from a radially inner end point to a radially outer end point. The radially inner end point may be arranged offset in the axial direction with respect to the radially outer end point.

The vibrator includes a frame defining an internal space, a voice coil fixed to the frame in the internal space, a shaft member arranged along an axial direction of the coil in the internal space, a magnetic circuit arranged slidably relative to the shaft member and having a magnetic gap in which the coil is arranged, and a compression coil spring arranged between one end side of the magnetic circuit and one end side of the frame along the axial direction in the internal space. The compression coil spring is a coiled wave spring configured such that a plate-shaped steel wire is multiple-wound in a spiral shape in a circumferential direction of the shaft member to alternately form a peak portion and a trough portion at an equal interval and the peak portion and the trough portion contact each other in the axial direction.

A hub with disengaging effect of ratchet faces in an idle mode includes: a gear barrel with first and second housing parts is located at the spacing from the driven end of the hub; a ratchet disc fixed in the driven end has a first annular ratchet face corresponding to the gear barrel; a double-sided free toothed disc disposed in the first housing part is in synchronous rotation with the gear barrel, and includes a second annular ratchet face, which is in a single steering engagement drive relationship with the first annular ratchet face; an elastic expansion member is disposed between the ratchet and double-sided free toothed discs, to push off annular ratchet faces in idle mode; a repulsion disc is mounted in the second housing part at the circumferential direction; an axial repulsion member has repulsion parts which are respectively disposed in the double-sided free toothed and repulsion discs.

A method of making a carbon fiber wave spring includes forming a disc-shaped ring from prepreg carbon fibers. The disc-shaped ring is then formed into a desired wave shape. The disc-shaped ring in the wave shape is then cured to form a wave spring.

The present invention provides a flexible member having excellent load resistance and flexibility while achieving a reduction in size. This flexible member is provided with: a main body part which includes multiple wave washers that are stacked in an axial direction and are joined to one another by multiple joint parts, and which is capable of bending relative to the axial direction by elastic deformation of the wave washers; and easily deformable parts formed between the joint parts that are adjacent to one another in the circumferential direction in each wave washer.

A hair removal device is provided including a hair removal surface having a first perimeter and a multi-angle deflector having a second perimeter greater than or equal to the first perimeter wherein the multi-angle deflector is coupled to the hair removal surface. The device includes an applicator head having a third perimeter greater than or equal to the first perimeter, wherein the hair removal surface is coupled to the multi-angle deflector via the applicator head. The device includes a base, having a fourth perimeter coupled to the multi-angle deflector, wherein the third perimeter is greater than or equal to the fourth perimeter. A base-deflector connection portion is coupled to a deflector-base connection portion, an applicator-deflector connection portion is coupled to a deflector-applicator connection portion, the multi-angle deflector provides multidirectional deflection connection of the applicator head relative to the base, and the fourth perimeter encircles the base-deflector connection portion.

A system for providing torque includes a stator, a rotor, an axle, an endcap, an endbell, and a compliant member. The stator has a first end and a second end opposite the first end with a chamber therein. The rotor is at least partially positioned in the chamber and rotatable relative to the stator about a longitudinal axis. The axle has a first end, a second end opposite the first end, and supports the rotor. The endcap is located at a first end of the stator and adjacent to the first end of the axle, and the endbell is located at the second end of the stator and adjacent to the second end of the axle. The compliant member is positioned relative to the axle between a portion of the rotor and one of the endbell and the endcap.

Provided is a flexible member that can exhibit excellent load resistance and flexibility while achieving a reduction in size. This flexible member includes: a main body part which has multiple wave washers stacked in an axial direction and joined to each other, and the main body part is able to be bent with respect to the axial direction due to elastic deformation of the wave washers; and a linking member that is elastically deformable, the linking member being provided at an end part of the main body part and being linked to other member. A deformation amount of the linking member is smaller than a deformation amount of the wave washer, when the main body part is bent.

A wave spring having an axially resilient spring section including at least one one-layer wave-shaped spring configured to provide a spring force in an axial direction of the wave spring, and a radially resilient spring section configured to provide a spring force in a radial direction. The wave spring may be made from a continuous flat wire that forms both the axially resilient spring section and the radially resilient spring section, the flat wire being rotated 90? at a transition from the axial spring section to the radial spring section.

A flat form spring, in particular a disc spring or corrugated spring, includes a spring body made of a low-alloy steel which has a carbon content of more than 0.35% by weight and at most 0.75% by weight. The steel contains between 0.3 wt. % and 0.9 wt. % manganese (Mn) as an alloying element. The steel also contains chromium (Cr) as an alloying element with a weight proportion of between 0.3 wt. % and 1.5 wt. %. The steel further contains between 0.1% and 0.6% by weight of molybdenum (Mo) as an alloying element. In addition, the steel contains more than 0.4 wt. % and up to 8 wt. % nickel (Ni) as an alloying element. A flatform spring made in this way has an improved strength compared to conventional flatform springs without a loss of toughness compared to a spring made of conventional spring steels.