Abstract: The present invention relates to an improved coupling device for tube and that is configured with a tube and an insert that can be fixedly disposed within the tube. The insert includes at least an enlarged portion that has an annular groove thereof, and a receiving space. The tube is provided with a plurality of through holes at the middle portion or end portions. The insert can be disposed within the tube and the outer of the tube is machined to form an annular recess corresponding to the annular groove in a manner such that the insert is fixedly disposed within the tube. Wherein each of the two tubes is provided with an insert in the position to be connected, and the tubes is arranged side-by-side at the area to be connected. An enclosing element is deployed to the connecting area such that the tubes are fixedly connected.

Abstract: A device for trolley of the type which is provided with four mounting brackets and each of which is mounted with a caster socket. Each caster socket is rotationally mounted with a caster. The trolley frame is further provided with a pair of hand grips at both sides for moving the trolley forward by exerting a forward force to the trolley through the hand grips. The braking device is mounted at the hand grip and includes a housing which is attached to the hand grip. A pulling rod is pivotally mounted at one end of the housing A cable is connected to the other end of the pulling rod. The pulling rod is provided with a first recess, a second recess and a boss. The housing is pivotally mounted with a braking handle which is provided with a biasing tab and a positioning tab.

Abstract: The present invention relates to a configuring frame for walker which comprises a pair of front tubes which has a S-shape configuration and being provided with a caster in the lower end. The upper end of the front tube is telescopically connected with a hand grip and which has a belt socket in the end portion. A back belt is bridged between the two belt sockets such that a backrest is formed. The middle portion of the front tube is disposed horizontally when the front tube is assembled. Those two front tubes is interconnected by means of a first traverse tube which is located adjacent to the caster and a second traverse tube which is located at the middle or horizontal portion of the front tubes. A pedal is pivotally mounted at the first traverse tube. And a pair of rear tubes and which has a horizontal portion and an inclined portion which extends downward and rearward. The end of the inclined portion is mounted with a caster.

Abstract: A trigger activated device for adjusting the inclination of a back frame of a wheelchair including a pair of adjusting assemblies provided on each of two sides of the back frame. Each adjusting assembly includes a horizontally disposed support which is fixed to a rear portion of a seat frame of the wheelchair. A back member is pivotally attached to the support. A threaded bar is pivotally attached to the back frame. A handgrip is attached to an upper portion of the back member. A trigger device disposed under the handgrip. A T-shaped hollow tube having a lug formed at one end thereof includes a first section and a second section protruding from a middle portion of the first section. The T-shaped hollow tube is pivotally mounted on a free end of the support via the lug. The threaded bar passes through the first section of the T-shaped hollow tube. An end cap is provided at a free end of the second section of the T-shaped hollow tube.

Abstract: A quick-release wheelchair axle comprising a male member of a coupling device which forms a continuous piece with and is collinear with the axle's axis, the end of the load bearing surface opposite the male member having two lock washer slots for wheel adjustability, the female member of the coupling device having a quick-release ring for ease of axle removal and threads in conjunction with a sleeve and nut which allow for adjustability of the axle against the structure of the wheelchair.