4 results about "Leg extension" patented technology

This invention discloses an anti-tilting sofa, comprising a base, a linkage support, a drive device, and a control unit. The linkage support includes a seat frame, a leg extension support, and a backrest frame, with the leg extension support and backrest frame rotatably connected to the seat frame. A damping element is connected to the leg extension support, the damping element having an elastic component that can elastically extend and retract. One end of the drive device is connected to the base, and the other end is connected to the elastic component of the damping element, used to drive the leg extension support to extend and retract via the damping element. When the load on the leg extension support reaches a preset value, the elastic component is compressed to retract the leg extension support. This anti-tilting sofa effectively avoids the risk of tipping over and is highly safe to use.

This invention relates to the field of fitness equipment, and more particularly to a seated leg extension trainer. The seated leg extension trainer includes a bottom support base; a weight box is fixedly installed on one side of the top of the bottom support base; two parallel guide rods are fixedly installed on the inner sidewall of the weight box along the vertical direction; multiple stackable weight blocks are slidably sleeved on the outer sides of the two guide rods; and a rope is fixedly connected to the top center of the uppermost weight block. The seated leg extension trainer provided by this invention, through the linkage structure of a resistance clutch component and a resistance application component, can not only adjust the basic resistance by increasing or decreasing the number of weight blocks, but also apply additional resistance by raising and lowering the weight blocks through the resistance application component. Furthermore, the resistance can be controlled by adjusting the cam eccentricity and the elastic extension and contraction of the abutment spring, meeting the needs of different training scenarios.

This utility model discloses a leg extension and retraction mechanism for a feed trailer, including a trailer body and a tow frame located at the front end of the trailer body. The lower end of the tow frame is equipped with the leg extension and retraction mechanism, which includes a fixing and locking component on the tow frame, a ratchet rotating head rotatably mounted on the fixing and locking component, ratchet teeth on the tow frame that engage with the ratchet rotating head, and a hydraulic leg located at the lower end of the ratchet rotating head. This utility model features a reasonable structural design. By incorporating the fixing and locking component, ratchet rotating head, ratchet teeth, and hydraulic leg into the leg extension and retraction mechanism, it achieves efficient and reliable extension and retraction locking of the outriggers. It is easy to operate and adaptable to different operating scenarios. The locking rod engages with the locking hole on the ratchet rotating head, enhancing stability during extension; the engaging teeth on the ratchet rotating head engage with the ratchet teeth, making the retraction locking more secure.

The present disclosure relates to an all-in-one machine for leg extension and flexion, comprising: a body and a swinging mechanism; and a weight assembly, mounted on the body and operably linked with the swinging mechanism; wherein the weight assembly comprises a connecting arm rotationally connected to the body, the connecting arm is provided with an orientation part along its length direction, a weight arm is mounted on the orientation part, and the weight arm is capable of reciprocally sliding along the orientation part and rotating around the orientation part.