CA1303578CCA000496653ACA496653ACA1303578CCA 1303578 CCA1303578 CCA 1303578CCA 000496653 ACA000496653 ACA 000496653ACA 496653 ACA496653 ACA 496653ACA 1303578 CCA1303578 CCA 1303578C
Authority
CA
Canada
Prior art keywords
bellows
pressure
seal
control apparatus
convolutions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to CA000496653ApriorityCriticalpatent/CA1303578C/fr
Application grantedgrantedCritical
Publication of CA1303578CpublicationCriticalpatent/CA1303578C/fr