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:
Jan. 29, 1985
Filed:
May. 24, 1982
Robert G Longamore, Newbury Park, CA (US);
Electron Beam Corporation, San Diego, CA (US);
Abstract
A valve structure permitting two vacuum chambers (16, 20) to be separted or joined without breaking the vacuum in either. The structure includes first and second valves (10, 12) positioned at openings in the vacuum chambers, a valve housing 30 surrounding the valves and able to be sealed to form a valve lock chamber (32), and a pair of valve actuators (34, 36). Each valve includes a pair of plates movable together to an intermediate position over the opening, and then movable away from each other in response to further actuator movement, to seal one of the plates over the opening. In one disclosed embodiment the plates are moved apart by a pair of parallel pivot links, and in another embodiment a pair of balls is used to effect the required sealing movement.