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.)
Expired
Application number
Inventor
Howard Steel Rodgers
John Duffield Prince
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
Application grantedgrantedCritical
Publication of GB190614021ApublicationCriticalpatent/GB190614021A/en
14,021. Rodgers, H. S., and Prince, J. D. June 19. Check valves. - In a pneumatic tyre having a supplementary air-tube C<1> fitted within the ordinary tube C, the innermost tube C<1> is inflated through a valve stem passed with sufficient clearance through the stem of the outer air-tube C, and fitted with ordinary valves, air passing between the stems to the outer tube.