摘要:
A torsional damper apparatus (1) includes a clutch hub (10) having a hub portion and a flange portion (11) extending in a radially outward direction from the hub portion, a first side plate (20A) and a second side plate (20B) coaxially disposed on opposite sides of the clutch hub and relatively rotatable with the clutch hub and first (30A) and second (30B) thrust members retained between contact faces of the clutch hub and the first side plate, and contact faces of the clutch hub and the second side plate respectively. At least one of the first thrust member and the second thrust member includes a base portion (31) and a coating layer (32) faces the flange portion and including a metallic particle having a smaller hardness than the clutch hub and a thermosetting resin.
摘要:
A torsional damper apparatus (1) includes a clutch hub (10) having a hub portion and a flange portion (11) extending in a radially outward direction from the hub portion, a first side plate (20A) and a second side plate (20B) coaxially disposed on opposite sides of the clutch hub and relatively rotatable with the clutch hub and first (30A) and second (30B) thrust members retained between contact faces of the clutch hub and the first side plate, and contact faces of the clutch hub and the second side plate respectively. At least one of the first thrust member and the second thrust member includes a base portion (31) and a coating layer (32) faces the flange portion and including a metallic particle having a smaller hardness than the clutch hub and a thermosetting resin.
摘要:
Torsion damper forming a dual damping flywheel with air flowing between the parts of two coaxial bodies. According to the invention, the second body (14) includes a disk (28) forming a plate rotatably linked by a bearing to the first body (12), an annular ventilation space (48) being formed between this disk, the platen (27) in the second body (14) and a disk (32) in the first body (12).
摘要:
Torsion damper forming a dual damping flywheel with air flowing between the parts of two coaxial bodies. According to the invention, the second body (14) includes a disk (28) forming a plate rotatably linked by a bearing to the first body (12), an annular ventilation space (48) being formed between this disk, the platen (27) in the second body (14) and a disk (32) in the first body (12).
摘要:
A gate valve (11) has within a valve housing (12) a ceramic valve gate (44), which is surrounded by a peripherally disposed compression band (47) for providing strength thereto, and which is engaged by a pair of ceramic valve seats (45, 46), which are in turn urged inwardly for such engagement by ceramic springs (30, 32). The ceramic springs comprise a plurality of plates of ceramic material separated by spacers which are disposed in a staggered array to form the ceramic spring.
摘要:
The present invention relates to laminated membranes formed by multilayer processing techniques including alternating layers of thermoplastic urethane and a barrier material such as a copolymer of ethylene and vinyl alcohol. The membranes are characterised in that significant hydrogen bonding occurs between the layers of thermoplastic urethane and the barrier material. The membranes are specifically characterised in that hydrogen bonds are formed between the layer including thermoplastic urethane and the layer including at least one copolymer of ethylene and vinyl alcohol. Products in the form of cushioning devices made from flexible membranes employing at least one layer including thermoplastic urethane and at least one layer of a copolymer of ethylene and vinyl alcohol are inflatable to a relatively high pressure. The cushioning devices maintain the internal inflatant pressure for extended periods of time by employing a phenomenon referred to in the industry as diffusion pumping. Ideally, the cushioning devices of the present invention can be permanently inflated with gases such as nitrogen or air. Still other products such as bladders useful for inflatable objects, such as footballs, basketballs, soccer balls and inner tubes; food packaging films; fuel liner; fuel storage tanks and pressurised accumulators, among others, are formable utilising the laminated membranes described herein.
摘要:
Piston (1) and piston-rod guide (2) unit for hydraulic shock absorbers, the guide comprising an annular piece (3) provided with a central orifice (5) and an elastic seal ring (4). The piston (1) is made up of a single piece (7) formed by a convexly curved generatrix revolution body (8). The external surface of the piston and the internal wall of the central orifice (5) of the annular piece (3) are provided, at least partially, with respective coatings (6, 9) of uniform thickness, of a material which reduces friction and improves wear resistance, such as polytetrafluoroethylene (PTFE) with a charge of ceramic particles and a pigment. The said charge of ceramic particles and of pigment preferably includes mullite and titanium oxide. The aforesaid coatings (6, 9) of the wall of the central orifice (5) of the annular piece (3) and the external surface of the piston (1) have a uniform thickness of between 20 and 60 micrometres.