31results about How to "Easy and cheap to make" patented technology

Composite metal powder for sintered bearings, prepared by coating surface layers of particles of iron powder with 10 wt.% to less than 30 wt.% of copper based on the iron powder so that the particle size of the coated iron powder is at most 80 meshes, the content of the powder of at most 350 meshes is at most 30%, and the specific surface area of the powder is 450-750 cm<SP>2</SP>/g according to the subsieve sizer method. This metal powder can provide an oil-retaining bearing for motors, which is capable of providing a low gas-permeability without decreasing the oil content and which has a low and constant coefficient of friction, a high corrosion resistance, a high adaptability and a high durability, readily at a low cost.

The invention provides a folding table, which comprises a height regulation device capable of easily and reliably regulating height from a leg or a top plate to the ground, while the folding table obtains reliable and stable using and folding states to the top plate. A locking connecting rod is arranged, and the locking connecting rod comprises a clamping part clamping or unclamping in a clamping groove. The clamping part of the locking connecting rod forms a plate on a same plane with the locking connecting rod. A peripheral surface on an upper end of a connection component is configured a same plane of a rotation area of the clamping part.

The invention provides a buffer device and a folding table.The buffer device is simple in structure, wherein the manufacture is easy and inexpensive, and the small-sized lightweight is realized. Meanwhile, the waste treatment is performed.The folding and unfolding operation of the folding table is performed by the buffer device.The folding table is easy in structure, wherein the manufacture is easy and inexpensive, the small-sized lightweight is realized and the design is improved while ensuring the operation to be smooth and safe.A telescopic action member can be movably accommodated in the main body of the buffer device. One end of the action member is connected to a load part.The load part can be displaced.when the load part is displaced, the movement of the action member can be braked or buffered.A movable body accommodated inside the main body can move along the axial direction thereof and the action member is movably accommodated inside the movable body.A retainer of a tapered portion is arranged at the circumferential surface of the movable body.When the action member is moved, the tapered portion is detachably inserted between a clamp part arranged inside the main body and the circumferential surface of the action member.

A forming pocket, which is suitable for receiving particulate material and forming conglomerates from the particulate material to be used as absorbent padding for hygienic products, comprises: an external forming substrate (3) which is suitable for receiving the particulate material, which is provided with openings and has a shape conjugated to the form of the absorbent padding to be made; a grid-shaped supporting structure (10; 30), which is couplable with the external substrate (3) to support the external substrate (3) during suction of the particulate material through the external substrate(3) and comprises a curved external face (11), intended for contact with the external substrate (3) and of a shape conjugated to the shape of the external substrate (3), an internal face (12), opposite the external face (11), a pair of greater side faces (13) that are opposite one another and a pair of lesser side faces (14) that are opposite one another, and through openings (17a, 17b, 18a, 18b)extending between the external face (11) and the internal face (12) to enable a gas to flow from the external face (11) to the internal face (12) during suction. A method for making the forming pocket comprises making at least one external layer (15) of the supporting structure (10; 30) and at least one internal layer (16) of the supporting structure (10; 30) that are superimposed and have respectively external openings (17a, 17b) and internal openings (18a, 18b) bounded by external walls (19a, 19b) and by internal walls (20a, 20b), in which the external openings ( 17a, 17b) and the internalopenings (18a, 18b) are arranged superimposed so as to define said through openings (17a, 17b, 18a, 18b); and in which the method further comprises making at least one of the external openings (17a, 17b) of a different shape and/or dimension from one of the internal openings (18a, 18b) on which it is superimposed by using a layer additive manufacturing process, i.e. 3D printing to make the external walls (19a, 19b) and the internal walls (20a, 20b).

This propeller with a small duct is characterized by comprising the following: a propeller (10) which is attached to the stern of a ship hull (1); and a duct (20) attached in front of said propeller (10). Said propeller with a small duct is further characterized in that: the diameter (Ddin) of the duct (20) is 20% to 50% of the diameter (Dp) of the propeller (10); and the pitch (H) of the propeller (10) decreases progressively in the radial (R) direction, with the maximum pitch at the bases of the blades and the minimum pitch at the tips of the blades. By using an energy-efficient device that combines characteristics of large ducts and mid-sized ducts, adjusting the shape of the propeller (10), and disposing the small duct (20) near the front of said propeller (10), cavitation is reduced in ocean areas in which the degree of loading is increased, and interference from the small duct (20) is utilized to optimize the load distribution in the radial (R) direction of the propeller (10), which controls efficiency.