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:
May. 05, 1987
Filed:
Feb. 26, 1985
Applicant:
Inventors:
Gerald W Iseler, Chelmsford, MA (US);
Brian S Ahern, Acton, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ; B01D / ;
U.S. Cl.
CPC ...
464162 ; 74 2 / ; 422249 ;
Abstract
A telescoping low vibration pulling mechanism for use in Czochralski crystal growth apparatus, comprising a broached bushing which defines an internal circumference of teeth therein, which teeth cooperate with complimentary teeth defined on the circumference of a splined shaft. The bushing is coupled to a motor drive via a hollow tube and the splined shaft, couplable to a seed shaft and an elevation assembly, telescopes through said bushing within said hollow tube.