Patents Assigned to Precision Motion Industries, Inc.
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Patent number: 9004764Abstract: A linear guide assembly has a bar device, multiple partitions, multiple containing spaces and multiple rolling balls. The partitions are mounted between two bars of the bar device at intervals to form the containing spaces. The rolling balls are respectively and rotatably mounted in the containing spaces. Each partition has multiple first protrusions and multiple second protrusions. Each rolling ball is in point-contact with the first protrusions and the second protrusions of adjacent two of the partitions. With the point-contact configuration, an outer surface of each rolling ball is lubricated by much oil.Type: GrantFiled: April 15, 2013Date of Patent: April 14, 2015Assignee: Precision Motion Industries, Inc.Inventors: Meng-Yi Chen, Wayne Cheng
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Publication number: 20140307988Abstract: A linear guide assembly has a bar device, multiple partitions, multiple containing spaces and multiple rolling balls. The partitions are mounted between two bars of the bar device at intervals to form the containing spaces. The rolling balls are respectively and rotatably mounted in the containing spaces. Each partition has multiple first protrusions and multiple second protrusions. Each rolling ball is in point-contact with the first protrusions and the second protrusions of adjacent two of the partitions. With the point-contact configuration, an outer surface of each rolling ball is lubricated by much oil.Type: ApplicationFiled: April 15, 2013Publication date: October 16, 2014Applicant: Precision Motion Industries, Inc.Inventors: Meng-Yi CHEN, Wayne CHENG
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Patent number: 7802921Abstract: A linear motion apparatus has a linear track, a slider and two sliding-assistant units for a linear motion apparatus. The sliding-assistant units for a linear motion apparatus is mounted between the track and the slider to enhance ease of movement between the track and the slider, and each sliding-assistant unit has two roller rings to receive rollers. The roller rings are elongated rectangular rings, are selectively mounted oppositely crossly around each other. Each roller ring is designed with reduced components to make manufacturing and assembling the sliding-assistant unit easier. Moreover, the roller ring is designed as one unity so no seam will be formed due to assembling two different pieces, such that ensures contact between the rollers and the roller ring smooth.Type: GrantFiled: March 11, 2008Date of Patent: September 28, 2010Assignee: Precision Motion Industries, Inc.Inventors: Ching-Shan Wu, Meng-Yi Chen, Jen-Wen Chen
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Patent number: 7563029Abstract: A rolling element chain has a connecting belt and multiple retaining elements. The connecting belt is extended longitudinally and has multiple receiving holes. The receiving holes are defined at intervals through the connecting belt and have two sides opposite to each other. The retaining elements are mounted in pairs on the belt near the sides of each receiving hole and each retaining element has multiple retaining surfaces adjacent to each other. Each retaining surface has a straight segment and a projecting segment having a projecting edge. The straight segments and the projecting segments of the adjacent retaining surfaces on each retaining element are arranged in an alternative manner. The retaining surfaces on each pair of the retaining elements are opposite and facing to each other.Type: GrantFiled: November 1, 2006Date of Patent: July 21, 2009Assignee: Precision Motion Industries, Inc.Inventors: Ching-Shan Wu, Jen-Wen Chen, Kuo-Jung Chang
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Patent number: 7523820Abstract: A rolling element chain is applied to retain and arrange multiple rollers at intervals in a line and has a belt assembly and multiple clamping assemblies. The rollers are cylinders mounted parallelly in the rolling element chain. The belt assembly is resilient and has two parallel bars. The clamping assemblies are formed in pairs between the parallel bars to form multiple roller holes on the belt assembly and each clamping assembly has multiple clamping protrusions. The clamping protrusions of each clamping assembly are formed in a line between the parallel bars and alternately protrude oppositely away from the belt assembly and together hold one corresponding roller in the belt assembly. Each clamping protrusion has a roller surface and at least one apex. The at least one apex is formed on and protrudes from the roller surface, thereby, reduces contact area between the clamping protrusions and the rollers.Type: GrantFiled: February 22, 2008Date of Patent: April 28, 2009Assignee: Precision Motion Industries, Inc.Inventors: Ching-Shan Wu, Yen-I Liao, Chien-Hsiung Liao