The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2007
Filed:
Mar. 18, 2005
Koichi Nishimura, Susono, JP;
Koji Shima, Fujiyoshida, JP;
Koichi Nishimura, Susono, JP;
Koji Shima, Fujiyoshida, JP;
Fanuc LTD, Yamanashi, JP;
Abstract
An injection unit in which an offset load is not applied to a ball screw for moving an injection screw. A pusher plate is provided that is moved while being guided by guide rods extending between front and rear plates, and is mounted with the injection screw and the ball screw so as to be rotatable but axially immovable. The ball screw is threadedly engaged with a nut mounted to the rear plate so as to be unrotatable and axially immovable. A support plate is coupled through coupling rods to the pusher plate. The ball screw has another end supported on the support plate in a rotatable but axially immovable manner. The pusher and support plates are supported on a base by linear motion guides. The ball screw is supported at its both ends by the pusher and support plates so as not to be tilted, whereby no offset load is produced and the service life is prolonged.