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:
Oct. 13, 1981
Filed:
Apr. 01, 1980
Hiroshi Inouye, Ibaraki, JP;
Eiichi Sato, Ibaraki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A mechanical seal suitable for providing a seal to a shaft sealing section of a rotary machine, particularly of the type operating under high speed and high pressure conditions, including a stationary retainer for holding a stationary sealing element, resilient means and recoil preventing means, a seal housing secured to the stationary retainer in a manner to surround the stationary sealing element, and an inwardly projecting portion formed in the seal housing to prevent axial movement of the stationary sealing element which might otherwise be caused by the biasing force of the resilient means when the mechanical seal is assembled or disassembled. The parts of the mechanical seal can be attached to the casing or detached therefrom as a unit.