Class / Patent application number | Description | Number of patent applications / Date published |
269225000 | Gear type | 7 |
20100314817 | CLAMP APPARATUS - A clamping apparatus includes a motor, a first cone gear secured to a shaft of the motor, and two clamping bodies attached to opposite sides of the motor. Each of the clamping bodies includes a second cone gear meshing with the first, a threaded post fixed to the second cone gear, a carriage threadedly connected with the threaded post, and a clamp arm fixed to the carriage. The motor rotates the first cone gear, and in turn the second cone gears and the corresponding threaded posts. With the rotation of the threaded posts, the carriages move towards or away from each other, whereby the clamp arms cooperatively acquire an object between the clamp arms, or release the object therefrom. | 12-16-2010 |
20120018940 | DEVICE FOR HOLDING WAFER SHAPED ARTICLES - A device for holding wafer-shaped articles, such as semiconductor wafers, is equipped with a series of pins that are brought into contact with a peripheral edge of the wafer-shaped article, under control of a common gear ring or a series of conjointly operated gear sectors. In the regions of the gear ring or gear sectors engaging the pin assemblies, those elements are designed to yield more readily than other regions of the gear ring or gear sectors, to accommodate differential thermal expansion of the chuck components in the vicinity of the pin assemblies. | 01-26-2012 |
20150008632 | DEVICE FOR HOLDING WAFER SHAPED ARTICLES - A device for holding a wafer-shaped article comprises an annular chuck base body having a plurality of movable contact elements for securing a wafer-shaped article to the annular chuck base body, and a gear mechanism driving the contact elements in unison between a first position and a second position. The annular chuck base body comprises a housing formed from a material that is resistant to attack by strong inorganic acids. The annular chuck base body also comprises a reinforcing ring fitted within the housing and formed from a material whose coefficient of linear thermal expansion is substantially less than that of the housing material. | 01-08-2015 |
269226000 | Worm | 3 |
20120146275 | CLAMPING DEVICE - Disclosed is a clamping device which reduces the overall size typical clamping devices used for similar operations by implementing a motor as a driving source and maintaining a clamping force applied to a panel constantly through accurate stroke control by incorporating a worm gear. More specifically, the clamping device includes a locator on which a panel is seated and a driving motor incorporated into a portion of the locator. A gear box rotates a rotation rod by receiving a rotational force from the driving motor and a clamper connected with the rotation rod, clamps the panel seated on the locator. | 06-14-2012 |
20140361478 | ELECTRIC CLAMP APPARATUS - An electric clamp apparatus includes a body, a rotary drive unit which is driven rotatably by an electric signal, and a rotary body rotated under a driving action of the rotary drive unit. Gear teeth of a clamp arm are enmeshed with helical screw grooves formed on the outer circumferential surface of the rotary body. The rotary body is rotated by driving the rotary drive unit, whereby the clamp arm, which is enmeshed with the screw grooves, is rotated through a predetermined angle to bring about a clamped state for clamping a workpiece. | 12-11-2014 |
20150048565 | CLAMPING UNIT, IN PARTICULAR FOR USE IN A MACHINING CENTER, OR A TURNING OR MILLING CENTER - A clamping unit, in particular for use in a machining center, or a turning or milling center, wherein the clamping unit comprises an external housing ( | 02-19-2015 |
269227000 | Rack and pinion | 1 |
20140374977 | ASYMMETRICAL TOOTHED WHEEL - The invention relates to a device comprising supports ( | 12-25-2014 |