A joint locking mechanism of a passive robotic arm includes: an output assembly, including a joint output shaft, and a friction disk fixed to the joint output shaft; a braking assembly, including a threaded shaft arranged coaxially with the joint output shaft, a threaded sleeve threaded to the threaded shaft, a rotary disk connected fixedly to the threaded shaft, an end cap rotatable relative to the rotary disk, and a scroll spring generating a rotational force on the threaded shaft. The scroll spring has one end connected fixedly to the end cap and the other end connected to the rotary disk or the threaded shaft. The threaded sleeve is abutted tightly against the friction disk.

A vehicle includes a floor plate defining a front and a back of the vehicle, wall sections to receive vehicle loading and transfer the vehicle loading to the floor plate, and a fluid delivery assembly supported by the floor plate. The fluid delivery assembly includes an intake manifold that resides at the back, an outlet that resides at the front, and a set of lateral conduits extending between the intake manifold and the outlet to laterally convey fluid entering the intake manifold from a fluid source to the outlet for delivery to a fluid target. Accordingly, the back may connect to the fluid source and the front may deliver the fluid thus keeping the vehicle sides and top available for other uses. Moreover, the low isolated placement of the fluid delivery assembly safeguards the fluid delivery assembly and provides a low center of gravity for vehicle stability.

A device for supporting and guiding a brake pad backplate and a brake pad arranged thereon in a pad slot of a disc brake, including a restoring device formed by two separately acting restoring elements. One restoring element is formed by a wire spring which serves to restore the lower portion of the brake pad backplate, while the other restoring element is formed by a pad hold-down spring which is capable of restoring the upper portion of the brake pad backplate.

A fall-protection apparatus with a drum and a rotationally-activated braking device including at least one velocity-actuated pawl that is mounted on a pawl-support plate that is rotatable relative to the drum through a predetermined range between a first position and a second position. The pawl-support plate is rotatable relative to the drum from the first position to the second position upon the pawl-support plate experiencing a rotational acceleration that is above a predetermined threshold value of rotational acceleration. When the pawl-support plate is in the second position, the velocity-actuated pawl can be actuated by a rotational velocity that is lower than a rotational velocity required to actuate the pawl when the pawl-support plate is in the first position.

A multi-directional adjustable armrest pad and a chair armrest device with an armrest pad are disclosed and three embodiments are provided. In an embodiment, the pad body can be adjusted to move in a longitudinal direction and a lateral direction, and rotate relative to the chair armrest, and the pad body can be lifted by controlling a regulating assembly, and the regulating assembly is also rotatable and pivotally swingable, so as to make the armrest pad suit placement of a user's hand when the user sits on the chair.

A system with a vertically adjustable telescoping pole assembly and cramp brake mechanism includes a telescoping pole assembly with at least an outer pole and an inner pole. The pole assembly is movable bi-directionally between a closed position and an extended position. The cramp brake mechanism has a body that is secured to the outer pole of the pole assembly, and also includes a brake that releases while the pole assembly is moved to the extended position and engages when the assembly is not being moved.

A system includes a carriage configured to move along a rail. The system also includes a clamping brake configured to selectively allow and prevent movement of the carriage along the rail. The clamping brake includes multiple brake pads configured to be moved inward to lock onto the rail and to be moved outward to release the rail. The clamping brake also includes multiple springs configured to apply spring forces that cause the brake pads to move inward and lock onto the rail. The clamping brake further includes a camshaft coupled to or including multiple eccentrics. The eccentrics are configured to overcome the spring forces and cause the brake pads to move outward and release the rail.

A turning device includes a hand disc coupled to an input shaft; a reduction gear set accommodated in a housing and connected to the input shaft and an output shaft; and a shaft connector for connecting the output shaft and a motor spindle.

A fall-protection apparatus with a rotationally-activated braking device including at least one first pawl that is a velocity-actuated pawl and at least one second pawl that is an acceleration-actuated pawl, the at least one first pawl and the at least one second pawl being independently actuated and independently functioning.

The invention discloses a friction simulating device, comprising: a first driving shaft, a first driving gear, a second driving gear, a second driving shaft, a plurality of friction plates and a driving mechanism. The first driving gear is coaxially fixedly connected to the first driving shaft. The second driving gear is located on a radial outer side of the first driving gear and is provided coaxially with the first driving gear. The second driving shaft is coaxially fixedly connected to the second driving gear. The plurality of friction plates being provided subsequently between the first driving gear and the second driving gear in a direction of an axis of the first driving gear, wherein some of the friction plates are axially movably connected to the first driving gear in a circumferential direction, and the other friction plates are axially movably connected to the second driving gear in the circumferential direction. The friction simulating device is able to simulate the friction applied to the wheels of the vehicle by the ground.