Various implementations include an extended repeated-use table cover device. The device includes a roller, a non-silicone mat, a disinfecting enclosure, a table mount, and a winding mechanism. An outer surface of the roller is coupled to a first mat end such that rotation of the roller about a roller axis causes the mat to wind around the outer surface of the roller. An outer surface of the disinfecting enclosure defines an opening extending from the outer surface to a cavity defined by an inner surface of the disinfecting enclosure. The roller is disposed within the cavity, and the mat is extendable through the opening. The winding mechanism is for rotating the roller from an extended position to a retracted position. The mat is durable enough to be used for at least three months under expected standard use without needing to be replaced.

A retractable cord reel houses contacts that connect autonomously when the user aligns the spool to lock it from retracting. The spool and housing contains high quality, sensitive contacts for high speed data and other critical signals that engage when indexed by the user. The design is flexible for adaptation to a variety of applications and scalable based on cable type and length as well as the number of contacts required. The contacts are engaged when the user allows an indexing dog to engage a spool indexing housing causing the dog to shift and force a mating lever to make the electrical connection. Decoupling occurs instantly when the spool is slightly rotated by the user. The user's only action throughout the process is to pull the cable. Without this intentional action of the user, the spool, rotates freely and the contacts are not engaged.

A line retraction device includes a rotatable drum having a line associated therewith, with the line including a first end directly or indirectly attached to the drum and a second end opposite the first end, and at least one retraction member biasing the drum in a first rotational direction of the drum opposite a second rotational direction of the drum, where the drum is configured to: (i) retract the line when the drum moves in the first rotational direction; and (ii) payout the line when the drum moves in the second rotational direction. The device further including a damper assembly configured to provide rotational resistance to the drum in: (i) the first rotational direction of the drum as the line is being retracted; and (ii) the second rotational direction as the line is being paid out.

A blind body actuator used in a cordless window blind assembly is provided to include a casing, a winding mechanism, two guide units and two lift cords. The winding mechanism includes two winding wheels and a volute spring connected to the winding wheels. Each of the winding wheels is meshed with one respective lift-cord wheel so that the lift-cord wheels can be driven by the winding mechanism to rotate synchronously. The guide units are respectively disposed adjacent to one respective lift-cord wheel, each including a first cylinder roller. Each of the lift cords is wound around the first cylinder roller of one respective guide unit, having one end thereof connected to one respective lift-cord wheel and an opposite end thereof extended out of the casing.

A self-exercise device that provides resistance to tugging, and is operable to intermittently change the resistance so as to mimic an actual tug-of-war game. The device includes ball gallery and ratchet structures that cooperate to provide additional intermittent resistance to provide action to the device that mimics an actual tug-of-war experience wherein the opposing resistance is randomly changing.

The present invention generally relates to the field of seat covers and specifically to novel means for storing, installing and removing seat covers from seats. In its simplest form, the device comprises a removable seat cover, a mounting element for installing the seat cover and a retraction system for removing the seat cover.

A cable adjuster contains a gear shaft, a base, a rotatable disc, and a cable. The gear shaft includes a first column, a second column, a circular peg, and a threaded orifice. The base includes a first fixer and a second fixer. The first fixer has a first groove, and the second fixer has a second groove. An accommodation chamber is defined between the first groove and the second groove, the first fixer has a toothed notch and a circular notch, and the second fixer has a hollow shoulder, two T-shaped slots, and two holders. The rotatable disc includes a fixing orifice, a cylinder, and a recess. A head of the cable is received in the second fixer via the two T-shaped slots and is engaged in the recess so that an extension is fixed in one holder, and the rotatable disc is received in the second groove.

An unequal-torque coil spring and a spring motor thereof which is adapted for a curtain set that can automatically fold back a curtain; the same provides a feedback torque that responds to different stages of a curtain-folding working process and generates various corresponding torque in response, as each of the different stages requires a different force. Consequently, the curtain can be folded back at a steady speed, and positionally fixed at any height when the curtain is lowered.

Provided is a reel for a conductor of an electric fence. The reel includes a bobbin, a frame for supporting the bobbin, and a connector. The connector can be two jaws and can have passages to connect the reel to a support such as a conductor of an existing fence or a tube of a vehicle. One of the jaws can be wide for stability. The connector can have an electrical conductor for connecting to the support and electrifying the conductor. The connector can also be operated by a trigger and can have a locking mechanism. The frame can be a one-piece frame made of plastics material. The reel can have a spreader and a hot-up bar. The reel can have a crank that can be disengaged from the bobbin and a brake that is applied when the crank is disengaged.

A torsion spring used in a flexible display device includes a spring body having a first connection end configured to connect a reel of the flexible display device, and a second connection end configured to fix the torsion spring. An axial sectional area of the spring body near the first connection end is greater than an axial sectional area of the spring body away from the first connection end. When the reel rotates, the torsion force generated during the initial rotation of the reel is relatively large, and with the increase of the rotation turn number of the reel, the increase of the torsion force is relatively small.