A telescopic module includes a first tube, a second tube, a holder, and a plurality of rollers. The first tube has a passageway. The second tube is received in the passageway of the first tube for reciprocation. The holder is mounted on the first tube. The rollers are pivoted on the holder to rest against the second tube or the first tube, or both to touch an inner side of the first tube and an outer side of the second tube to be turned when the second tube is moving.

A leg tube sliding locking mechanism for opening and closing a folding tent includes a sliding support sleeved on a leg tube, a jump bead, and a V-shaped spring. One end of the V-shaped spring is connected to the jump bead, and the other end of the V-shaped spring is fixed to an inner wall of the leg tube. A bushing is installed on an inner wall of the sliding support in a fitted manner. An upper end of the busing extends downward to form a pressing sheet, and the pressing sheet has a lower end extending outwards to a lower end of the sliding support. The pressing sheet covers the jump bead.

The present invention disclosed a paddle, which includes a blade and a hollow lower shaft that connects to the blade. The hollow lower shaft is capable of receiving a rod and an upper shaft capable of entering and moving within said lower shaft; with one end of the upper shaft connected to the rod and able to move simultaneously with the upper shaft within the lower shaft. Wherein, the material of the rod within the hollow lower shaft is different from that of the hollow lower shaft, and the paddle is less likely to break instantaneously.

In an aspect, provided is an adjustable telescoping assembly. The adjustable telescoping assembly comprises a first support member and a second support member that is slidable upon the first support member and which defines an interior volume. At least one damping element is provided that extends from outside the second support member, through a corresponding damping element aperture on the second support member into the interior volume and engages the first support member.

The disclosure relates to: a locking binding element for releasably locking an adapter relative to a body of a pushpull rod, said element comprising a lever arm and a pin connected to the lever arm, a snap-action element, and a latching device; and a push-pull rod comprising such a locking device. According to the disclosure, the snap-action element is rotatably connected to the lever arm. This allows a more flexible use of the locking element on the push-pull rod.

The disclosure relates to: a locking binding element for releasably locking an adapter relative to a body of a pushpull rod, said element comprising a lever arm and a pin connected to the lever arm, a snap-action element, and a latching device; and a push-pull rod comprising such a locking device. According to the disclosure, the snap-action element is rotatably connected to the lever arm. This allows a more flexible use of the locking element on the push-pull rod.

A connector having a spring configured to change a dimension such as diameter or length in response to a change in a force applied to it, wherein the spring is biased in a radial or longitudinal direction towards a natural dimension. The connector including a dimension control portion configured to restrict the change in dimension in a direction away from the bias of the spring.

There is provided a portable system which includes a central cylindrical control module having a central axis and a lower body portion. The cylindrical control module has at least one telescopic arm which is contained within the cylindrical control module in a first locked position in the lower body portion and in a second unlocked position the telescopic arm is capable of extending and rotating vertically and horizontally to a selected location. The telescopic arm receiving a periphery device in a receiving slot at an end of the telescopic arm which electronically connects with said central control module.

There is provided a portable system which includes a central cylindrical control module having a central axis and a lower body portion. The cylindrical control module has at least one telescopic arm which is contained within the cylindrical control module in a first locked position in the lower body portion and in a second unlocked position the telescopic arm is capable of extending and rotating vertically and horizontally to a selected location. The telescopic arm receiving a periphery device in a receiving slot at an end of the telescopic arm which electronically connects with said central control module.

An electrical connector for removably engaging a welder to a spot welding tool having a first arm in a pivoting engagement to a second arm. The connector features an electrically conductive member engaged to or forming a powered translating shaft of a welder which is surrounded by a housing. The connector engages within a passage formed in a coupling to communicate forward and rearward movement and electric current to a first arm of a spot welding tool.