An extendable and retractable earpiece cable assembly for mobile communication or sound devices including a housing integrally formed with or detachably connected to a casing for protecting a mobile electronic device. The housing receives a mechanism around which at least one earpiece cable is removably wound. The earpiece cable is extendable from and retractable into the housing.

A retractable leash system includes a housing, a leash, a spool, and a brake. The spool is attached to the leash and disposed within the housing. The leash is configured to be rotationally biased so as to urge the leash into a spooled configuration. The brake includes an operating button, a compression spring, and a brake member coupled to the operating button. The brake member is associated with the compression spring and is configured to engage the spool by operation of the operating button, such that, when the brake is engaged, the spool is prevented from rotating in an unspooling direction and capable of rotating in a spooling direction.

A window covering system comprises a shell, a weight member, a covering material positioned between the shell and the weight member, a control device. The covering material comprises at least one ladder, multiple slats corresponding to the at least one ladder, and at least one lifting cord, wherein the lifting cord is connected between the shell and the weight member. The control device comprises a driving module, a releasing module, and an operation module that are connected to each other. The ladder is connected to the operation module, and the lifting cord is connected to the driving module, such that the operation module drives the ladder to tilt the slats, at the same time, the releasing module is driven by the operation module to remove restriction to the driving module, hence descending the weight member.

A rollable display device includes a display panel for displaying an image, a printed circuit board connected to an edge of the display panel, and a roller which the display panel is rolled onto or unrolled from. The roller has a cylindrical shape having an inner space, and the printed circuit board is disposed in the inner space.

A method and device for adjusting the unstored length of tubing directed to improving the use of infusion sets that deliver fluids to a user. The device includes a storage module and other features for adjusting, storing and securing the length of the tubing. The method of adjusting the length of the tubing to a desired length typically comprises removably attaching the tubing to the adjuster, adjusting the tubing by wrapping the tubing around a hub or post of the adjuster, and fixing the length of the unstored tubing by attaching the tubing to a securing device such as a friction structure or fastener.

A spool apparatus is described to include in one particular example a cable spool with a first cylindrical lip and a second cylindrical lip on an opposite side of the cable spool. A center of the spool includes a clutch bearing in the center of both the first cylindrical lip and the second cylindrical lip that provides a rotational axis for the cable spool to rotate around. The apparatus may also include a feed slot near the first cylindrical lip that provides a passage for cable to pass from the second cylindrical lip to the first cylindrical lip.

A spool apparatus is described to include in one particular example a cable spool with a first cylindrical lip and a second cylindrical lip on an opposite side of the cable spool. A center of the spool includes a clutch bearing in the center of both the first cylindrical lip and the second cylindrical lip that provides a rotational axis for the cable spool to rotate around. The apparatus may also include a feed slot near the first cylindrical lip that provides a passage for cable to pass from the second cylindrical lip to the first cylindrical lip.

A self-opening bag includes front and real walls joined at their respective first and second side and bottom edges. The bag is folded at least once parallel to its side edges. At least one attaching feature is located on the outer surface of the bag adjacent the upper end and between the folded walls. The bag is releasably attached to a subsequent bag. The at least one attaching feature causes the bag to open as the bag is pulled from the subsequent bag. The once folded bag may be sealed at the bottom edges after folding to form a star-sealed bag bottom. The bags may be removably attached to each other at a perforation line and wound onto a compact roll for use with a bag dispenser. The bags may have an upper seam, a U-shaped cut and a pair of bag handles. The bags may be corona treated.

A spool-supplying apparatus for managing a plurality of spools is presented and is comprising a spool support frame, a spool-supporting axle secured in cantilever, at a first end thereof, to the spool support frame, the spool-supporting axle being configured to support a plurality of axially-supported spools thereon, the plurality of spools axially engaging the spool-supporting axle through a second end thereof, and a spool unwinder operatively associated with the spool-supplying apparatus for unwinding a spool, the spool unwinder being configured to rotatably engage a first spool from the second end of the spool-supporting axle. A method of using the spool-supplying apparatus is also presented.

A spool-supplying apparatus for managing a plurality of spools is presented and is comprising a spool support frame, a spool-supporting axle secured in cantilever, at a first end thereof, to the spool support frame, the spool-supporting axle being configured to support a plurality of axially-supported spools thereon, the plurality of spools axially engaging the spool-supporting axle through a second end thereof, and a spool unwinder operatively associated with the spool-supplying apparatus for unwinding a spool, the spool unwinder being configured to rotatably engage a first spool from the second end of the spool-supporting axle. A method of using the spool-supplying apparatus is also presented.