71results about How to "Smooth retraction" patented technology

An extension and retraction arrangement with a trolley structure retained for axial extension and retraction relative to a rail arrangement and a control system with an actuating arrangement and a mechanism for selectively controlling a travel of the trolley structure. In a manual control system, the trolley structure can be mechanically engaged and disengaged in extended and retracted configurations by first and second locking projections respectively. An actuating rod can be actuated by a trigger to pivot the locking projections into and out of engagement with the trolley structure. The trigger can additionally enable a selective release of first and second doors from closed positions. A motorized control system can propel the trolley structure and open and close the doors. A lock and key, an access card and access card reader, or a remote control and remote control receiver can selectively enable operation of the control system.

A retractable cover for a slide-out unit on a recreational vehicle, mobile home, travel trailer, or the like, includes a roll bar that is movable with the slide-out unit away from the side of the vehicle with the roll bar mounted in a housing having a closure plate which is easily pivoted to an open position or removed to facilitate maintenance or removal of debris that may accumulate in the housing during a retraction of the cover. The housing is mounted on the slide-out unit with brackets permitting the brackets to be located at any position along the length of the housing and also permitting the housing to assume a length that is much greater than the width of the slide-out unit providing a better cover for the slide-out unit during inclement weather.

A retractable cover for a slide-out unit on a recreational vehicle, mobile home, travel trailer, or the like, includes a roll bar that is movable with the slide-out unit away from the side of the vehicle with the roll bar mounted in a housing having a closure plate which is easily pivoted to an open position or removed to facilitate maintenance or removal of debris that may accumulate in the housing during a retraction of the cover. The housing is mounted on the slide-out unit with brackets permitting the brackets to be located at any position along the length of the housing and also permitting the housing to assume a length that is much greater than the width of the slide-out unit providing a better cover for the slide-out unit during inclement weather.

A roll screen control member is revealed. The roll screen control member consists of a sprocket wheel, a chain protection cover, a sprocket support, a cover spring, a splined bush and a central pin. The splined bush is mounted with a roll screen tube while the central pin includes a central pin head with a plurality of cutting surfaces. After the central pin being locked into the sprocket support, each cutting surface of the central pin is corresponding to each cutting surface on the sprocket support. When a chain is pulled, due to the precise locking between the central pin and the sprocket support, splined bush is moved along with the cover spring so as to drive the roll screen tube to rotate along with the movement and further control extension or retraction of the roll screen.

The invention relates to a box body lock and a meter box with the box body lock. The box body lock comprises a lock body, a lock cylinder, an inclined spring bolt and a lock catch, a rotating cavity is formed in the lock body, the lock cylinder is rotatably installed in the rotating cavity, a key hole is formed in the lock cylinder, a communicating hole corresponding to the key hole is formed in the surface of the lock body, the communicating hole communicates with the rotating cavity, and a spring bolt hole is formed in one side of the lock body. The telescopic inclined spring bolt is installed in the spring bolt hole in a sliding mode, a reset elastic piece is arranged between the inclined spring bolt and the lock body, the inclined spring bolt can stretch out and draw back to be matched with the lock catch on a door in a buckled mode, a connecting groove is formed between the spring bolt hole and the rotating cavity, a transmission mechanism is arranged in the connecting groove, and the lock cylinder drives the inclined spring bolt to stretch out and draw back through a transmission mechanism. Most of lock accessories are arranged in a door body, compared with a padlock, the lock accessories are not prone to being rusted, the inclined spring bolt can freely stretch out and draw back, and a worker can easily lock the door body and a door frame.

A flexible printed circuit board and an electronic device using the same are provided. The electronic device includes a first casing, a second casing, and a printed circuit board combination. The printed circuit board combination includes a first printed circuit board, a second printed circuit board, and a flexible printed circuit board. The flexible printed circuit board includes a body portion, a first extending end, and a second extending end. The body portion defines an opening. The first extending end bends from a first side of the body portion toward the body portion and extends toward a first direction after passing through the opening to connect the first printed circuit board. The second extending end extends from a second side of the body portion toward a second direction to connect the second printed circuit board.