Title:
【発明の名称】ベロ-ズシ-ル
Document Type and Number:
Japanese Patent JPS63501436
Kind Code:
A
Abstract:
A bellows seal apparatus for use in compressors or the like which has a pump (15 and 115) arranged and controlled to maintain a desired pressure differential between the inside and a driving mechanism (18, 130 and 230) having a connection with a movable end (113) of the bellows and an additional connection or connections with said bellows at unequally spaced points inermediate to the ends of the bellows to provide the least maximum stress levels in the bellows convolutions of each and thus the maximum life expectancy for the seal. The driving mechanism may take many forms but is so designed that it will elongate and contract each section of the bellows a distance depending upon the dynamically caused stresses in each section and the composition of and the number of bellows convolutions in each section.
Inventors:
Browne, Anton
Application Number:
JP50543685A
Publication Date:
June 02, 1988
Filing Date:
November 27, 1985
Export Citation:
Assignee:
Browne, Anton
International Classes:
F04B39/04; F04B39/00; F16J15/52; F16J15/56; F16K39/00; (IPC1-7): F04B39/00
Attorney, Agent or Firm:
Kyozo Yuasa