Other

Shinn Fu Corporation

Mvp (hk) Industries, Inc.

Utility Electronics Industries Co. Ltd.

Michael Hung

A wheeled hydraulic jack with a suspensory lifting device comprises a hydraulic unit, two pivotal cantilever arms and two movable tension links each pivotally mounted on each of the pivotal cantilever arms. The free end of each movable tension link is connected with one end of a cross-wise shaft of the hydraulic unit. A piston of the hydraulic unit moves upwardly and bears against the cross-wise shaft to lift a loading terminal of the pivotal cantilever arms by a suspensory device.

Wheeled hydraulic jack with suspensory lifting device

A vehicle waxing/buffing appliance capable of having a removable/repositionable secondary handle. The appliance includes at least one adaptor to receive and hold the handle installed in the outer plastic molded housing. The user may install or reposition the handle as desired to help in both the efficiency of the operation and the comfort of the user.

Vehicle waxing/buffing appliance with removeable/repositioning handle

A manually operated zero-load rapid lifting hydraulic jack. The jack has a lifting arm and a lever which are connected properly together by contacting one another. A lifting arm is formed with an integral receiver portion, which could be in the form of a receiving hole, a receiving tube, a receiving block or any infinite variety of receiver configurations, such that one end of the lever can be inserted into or locate over those receivers as described above. In zero load, as the lever is being pressed downwards and the lifting arm axle serves as a fulcrum to drive the lifting arm to move upwards rapidly to a position of contacting with a lift point.

Manually operated zero-load rapid lifting hydraulic jack

Combination air compressor-lifting jack

A jack board assembly fixedly mounted on the lift of a garage jack and adapted to lift a load with the lift, including a jack board having a top recess and top blocks around the top recess, and an anti-skid convex pad mounted in the top recess of the jack and defining with the top recess an air chamber, the anti-skid convex pad having a plurality of air vents for exhaust of air from the air chamber when compressed by the load put on it.

Jack board assembly for the jack lift of a garage jack

An automatic lifting device with a light module is disclosed. The front end of the automatic lifting device has a lateral side plate at each side, a front shaft, a top plate (saddle), a lifting arm and a carry handle. A selected component of the automatic lifting device is attached with a light module providing light at the front lifting end of the device. The light module is attached to the automatic lifting device by one method selected from a group containing magnetic attraction, adhesive, clamping, snapping on, pressing in, locating in, embedding, screwing etc. so that a sufficient illumination is provided at the correct position to the supporting point for an object to be lifted by the automatic lifting device. The light source of the light module is pivotally connected to the body of same light module. Further the light source of the light module is freely adjustable so the orientation of the light source is also adjustable thus providing correct illumination at correct position.

Automatic lifting device with illumination ability

Jack

A pivotal handle may be adjusted and maintained at a desired angle by manipulating a pair of movable pieces at opposite ends of the handle to permit engagement and disengagement of toothed portions on the ends of the handle and corresponding toothed portions on a pair of fixing seats.

Pivotal device of a handle

A jack with enclosing or cover plates is disclosed, which is especially suited for enclosing the supporting plates at two sides of a four wheel jack and the pump of the jack. The jack can be combined with two supporter enclosing plates and a pump enclosing plate which may have any desired shape or color, so that the outlook of the jack is vivid and various. By the enclosing or cover plates, painting for the related shielding components by baking or injection can be omitted. The cover or enclosing plate can be secured by tenons or screwing lock. Thus, the present invention has a simple structure and can be assembled easily.

Jack with enclosing plates

A hydraulic raising apparatus with automatic regulated speeds can automatically adapt its raising speeds for various load conditions. It mainly comprises additional hydraulic circuits, check valves and adjustable relief valves arranged between the piston rod side chamber and the rodless side chamber of hydraulic cylinders and pumps. The arrangement enables hydraulic cylinders and pumps to change their working modes in a hydraulic circuit, depending on loaded conditions, from a piston type to a spool type and vice versa. Hence the hydraulic apparatus can adjust its raising speeds in agreement with loads. When the apparatus bears a light load, it will quickly carry the load to position. On the other hand, when the load is heavy the apparatus will move it at a slower speed and thus need just reduced input energy. Therefore, the apparatus according to the invention can enhance efficiency to the greatest extent.

Hydraulic raising apparatus with automatic regulated speeds

An oil circuit of a jack for rising an object to a preset position rapidly, wherein the oil inlet circuit of a hydraulic loop system is improved. An oil channel is installed between the inner oil chamber of the piston rod and the sequential valve. A check valve is installed between the oil channel and the sequential valve. An oil channel is installed between the sequential valve and the check valve for being connected to the inner oil chamber of the piston rod. By changing the positions of the check valve and the oil channel. When in the working conditions of dump load or light load, the sequential valve is closed, thus, the hydraulic oil may enter into the inner oil chamber of the piston rod from the pumping oil chamber through the check valve so that the piston rod will rise rapidly to a still condition. In the still condition, since the check valve closes the oil channel, the sequential valve will open automatically so that the inner oil chamber of the piston rod is communicated to the inner oil reservoir. Thus the inner and outer oil pressures of the oil guiding tube in the piston rod are equal. Thus, no strong still load hydraulic pressure exists in the oil guiding tube within the inner oil chamber of the piston rod. BY this changing, the still load hydraulic pressure of the inner oil reservoir and the inner oil chamber of the piston rod can be adjusted equilibrium by the sequential valve. Therefore, the problem of breakage of the oil guiding tube of the piston rod and the high cost due to confinement in material are solved. Moreover, the sequential valve can be located outsides so that the sequential valve is adjustable at outside to a preset actuating pressure.

Oil circuit of a jack for rising object to preset position rapidly

A receiving bag of a jack for storing a car jack made of plastic or cloth. The receiving bag has an approximately rectangular shape. The top of the receiving bag has a zippered opening, and the inner bottom of the bag has a rectangular bottom plate. The front and rear edges of the bottom plate are provided with respective transversally long fixing plates. Two fixing means are installed at the proper positions at one side of the bottom plate. A jack is received within the receiving bag and the wheels of the jack abut the fixing plates on the bottom plate. Furthermore, the fixing means serve to fix the handle of the jack. Thereby, the user may store the jack conveniently within the receiving bag for a long time.

Receiving bag of jack

A folding device for treadmill, particularly an easy and ready-to-fold folding device to fold handle frame on treadmill so that the handle frame can be folded to the surface of the treadmill body to minimize packing volume and transportation costs, as well as to save space requirement for storage.

Folding device for treadmill

The invention relates to an improved hydraulic quick lifting unit used in a jack, especially to improvements made on the valves of the hydraulic system, a fastener assembly and an oil return tube of the lifting shaft. The hydraulic system can return hydraulic liquid to the outer oil reservoir in a slow rate when the lifting shaft according to the invention bears a load. Thus the lifting shaft moves down slowly. When the load on the lifting shaft is removed, the hydraulic liquid flows back to the outer oil reservoir in a larger quantity in a short time. Hence the lifting shaft can quickly return to the its original position. Further, the fastener assembly is located between the lifting shaft and the mandrel, which has the advantages of enhancing the accuracy of the clearance between the mandrel and the inner oil reservoir of the lifting shaft, and preventing the positional shift of the mandrel in the inner oil reservoir. The invention has the benefit of enhancing the stability of product performance.

Growing community of inventors

Lu Chu Hsiang, Taiwan

Michael Hung