Supports – Vacuum
Patent
1996-08-27
1998-06-30
Wood, Wynn E.
Supports
Vacuum
248362, 2482059, 269 21, 294 641, B66C 102, E04G 310
Patent
active
057721700
ABSTRACT:
A suction chamber is provided in the rear portion of a pad body remote from an external pad supporting surface. The fore end portion of the pad body facing the pad supporting surface is divided into a plurality of sucking compartments for communication with the suction chamber. An air flow passage is provided for communication with the suction chamber. Valve mechanisms are provided in air flow paths between the respective sucking compartments and the suction chamber and are closable by a sucked air flow occurring during vacuum suction. Further, an automatic switching valve is provided in a part of the air flow passage in such a manner that the switching valve is caused to open in response to abutment against the pad supporting surface of the pad body. The air flow passage is formed in such a manner that a direction of force acting to cause the automatic switching valve to open differs from a direction of counteractive force against a spring structure that normally urges the switching valve to close.
REFERENCES:
patent: 3307817 (1967-03-01), Cocito
patent: 3591228 (1971-07-01), Webb
patent: 3602543 (1971-08-01), Sjodin
patent: 4557514 (1985-12-01), Cushman et al.
patent: 4650233 (1987-03-01), Mang et al.
patent: 4718629 (1988-01-01), Block et al.
patent: 5048804 (1991-09-01), Ito
patent: 5374021 (1994-12-01), Kleinman
patent: 5429333 (1995-07-01), Klein
patent: 5681022 (1997-10-01), Rankin
Callo Laura A.
Nihon Biso Co. Ltd.
Wood Wynn E.
LandOfFree
Vacuum-suction attachment pad does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vacuum-suction attachment pad, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum-suction attachment pad will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1851204