2989 results about "Spur gear" patented technology

A switchable rotation drive device has a switching mechanism wherein a first connecting sleeve that always rotates integrally with a motor hollow rotor, and a second connecting sleeve that always rotates integrally with a planetary carrier of a planetary gear reduction mechanism are connected via a bearing in a relatively rotatable state, and the first connecting sleeve is formed with a sun gear. By sliding the switching mechanism, the output shaft can be switched between high-speed rotation and low-speed rotation. In comparison to a case in which the entirety of the planetary gear reduction mechanism is made to slide, the sliding region may be smaller, and the required space needed to allow sliding may also be smaller. Therefore, it is advantageous to reduce the size of the device and make it more compact.

A gas turbine engine includes an epicyclic gear train that drives a turbo fan. The epicyclic gear train employs a one-piece carrier in which the spaced side walls are interconnected with circumferentially spaced apart mounts to form a unitary structure. Baffles are secured to the carrier near the mounts and provide lubrication passages that spray oil onto the sun gear and / or intermediate gears arranged between the baffles. The baffles can be constructed from a different material than the carrier since the baffles are not structural components in the gear train.

An apparatus and method for joining members together using a self-drilling screw apparatus or stapling apparatus are disclosed. The screw apparatus includes a worm drive screw, a spur gear and superior and inferior screws which turn simultaneously in a bi-directional manner. A rotating mechanism drives the first and second screw members in opposite directions and causes the screw members to embed themselves in the members to be joined. The screw apparatus can be used to join members such as bones, portions of the spinal column, vertebral bodies, wood, building materials, metals, masonry, or plastics. A device employing two screws (two-in-one) can be combined with a capping horizontal mini-plate. A device employing three screws can be combined in enclosures (three-in-one). The stapling apparatus includes grip handles, transmission linkages, a drive rod a fulcrum and a cylinder. The staple has superior and inferior segments with serrated interfaces, a teethed unidirectional locking mechanism and four facet piercing elements. The staples can be also be used to join members such as bones, portions of the spinal column, or vertebral bodies.

A vehicle includes a prime mover, a first output shaft, a second output shaft and a planetary gear assembly. The planetary gear assembly includes a sun gear, a ring gear and a plurality of planetary gears supported between the ring gear and the sun gear by a carrier. One of the sun gear and the ring gear is coupled to the prime mover. The other of the ring gear and the sun gear is coupled to the first output shaft. The first carrier is coupled to the second output shaft.

A multiple speed transmission includes an input and output; a first, second, third and fourth planetary gear sets, each gear set including a sun gear, a ring gear, a carrier, and pinions supported on the carrier and meshing with the sun gear and the ring gear; a first epicyclic gearing assembly including the first gear set, the second gear set, a first clutch, a first brake, a second brake, and first, second, third and fourth rotating members, said first clutch being operable to couple said first rotating member to the input, said first brake being operable to hold said fourth rotating member against rotation, and said second brake being operable to hold said second rotating member against rotation; and a second epicyclic gearing assembly including the third gear set, the fourth gear set, a second clutch, a third clutch, a third brake, and fifth, sixth, seventh and eighth rotating members, the third rotating member being secured to the eighth rotating member, said second control clutch being operable to couple said fifth rotating member to the input, said second control clutch being operable to couple said seventh rotating member to the input, said third brake being operable to hold the seventh rotating member against rotation, and said sixth rotating member being secured for rotation to the output.

A motor vehicle multi-stage planetary transmission which has a housing that accommodates four planetary gear sets (P1, P2, P3, P4), shafts (2-9), three clutches (K1, K2, K3) and three brakes (B1, B2, B3) whose selective actuation implements various transmission ratios between drive and output shafts. The carriers of gear sets (P1, P2) are connected by shaft (4), the ring gear of gear set (P2) can be fixed to the housing, via shaft (5), by actuating brake (B1). A ring gear of gear set (P1) and a sun gear of gear set (P2) are coupled by shaft (6) which can be connected, via clutch (K1), to the drive shaft. A sun gear of gear set (P1) can be fixed, via brake (B2), to the housing and can be coupled, by clutch (K2), to drive shaft. The first and second clutches (K1, K2) are startup elements which initiate startup procedures.