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:
Sep. 16, 1997
Filed:
Jul. 13, 1995
Laurentius AG. Mentink, Haaksbergen, NL;
Applied Power Inc., Butler, WI (US);
Abstract
A hydraulic circuit for opening and closing of a folding roof has at least two (pairs of) cylinders, one of which is adapted to open and close the folding roof and the other of which is adapted to lock the roof upon closing. The hydraulic circuit also has electrically operated valves provided in the circuit in such a way that the closing pressure within the roof cylinder is released rapidly as soon as the front roof edge gets within the catching area of the lock member, after which the lock cylinder will immediately close. This prevents the roof from moving in the closing direction too far, which would involve the tendency of the roof to 'spring back', and avoids the chance of 'miscatching' by the lock member.