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:
Aug. 22, 1995
Filed:
May. 25, 1994
James H Arnold, Moberly, MO (US);
Orscheln Co., Moberly, MO (US);
Abstract
A magnetic latching mechanism and method having permanent magnets and electromagnets arranged to alternately magnetically latch one member to either of two other members using the magnetic flux of the permanent magnets. The magnetic flux of the electromagnets is used to modify the permanent magnetic flux to cancel its magnetic latching to one of the other members and attract the one member to the other of the other members so that the one member is moved to disengage from the one member and engage that other member. The electromagnets are then deenergized and only the permanent magnets' magnetic flux magnetically latches the one member to that other member. The process is reversed to move the one member back into latching engagement with the member with which it in disengaged, magnetically released, relation. The mechanism is disclosed as being used to actuate and release parking brakes by acting on a parking brake actuating arm to move, latch and release that arm. Mechanical assist mechanisms are also disclosed which may be used to assist in the magnetic force instigated movements as needed.