Handling: hand and hoist-line implements – Magnet
Utility Patent
1999-03-17
2001-01-02
Cherry, Johnny D. (Department: 3652)
Handling: hand and hoist-line implements
Magnet
C294S082230
Utility Patent
active
06168221
ABSTRACT:
FIELD OF THE INVENTION
This invention relates generally to a material holding device and more particularly to a magnetic carrier for holding parts.
BACKGROUND OF THE INVENTION
Parts, especially relatively small and narrow die-stamped parts, are typically extracted from press lines by venturi vacuum cups. Shop air is used for this purpose. However, in practice, the parts are frequently dropped by the vacuum cups. For small, narrow parts, there is usually not enough room to properly locate a small cup. Vacuum cups must be set exactly to the contour of the part in order to be effective.
SUMMARY OF THE INVENTION
The magnetic carrier of this invention is designed to replace vacuum venturi cups. The magnetic carrier of this invention is faster on set up, more forgiving than vacuum cups and very reliable. The magnetic carrier of this invention can be operated with only a minimum amount of air, thus saving plant air. The magnetic carrier of this invention is quiet in operation in contrast to the noise and whistling sounds typical of a venturi used to activate a vacuum cup. The magnetic carrier of this invention is formed of lightweight materials having a long life and preferably using a permanent magnet with maximum pick-up power.
The magnetic carrier of this invention can be built in different sizes. A preferred embodiment magnetic carrier of the present invention can be used in dirty environments, and can also be used in all directional orientations. In a preferred embodiment, the magnetic carrier of the present invention provides a housing with a closed top and a covered nonmagnetic bottom. The housing also has an interior ledge to react lifting loads applied to the magnets.
First and second levers are pivotally mounted within the housing. The interior housing ledge limits the angular position of the levers with respect to the housing. First and second permanent magnets are connected with the respective first and second levers. The magnets are provided for attracting a workpiece. A pneumatic piston actuator is also provided on the housing for pivoting the levers with respect to the housing. The piston has a rod pivotally contacting the levers.
An object of the present invention is to provide a magnetic carrier which is composed of a relatively few simple parts, is rugged and durable in use, and is capable of being inexpensively manufactured and assembled.
The above-noted objective and other advantages of the present invention will become more apparent to those skilled in the art as the invention is further explained in the accompanying drawings and detailed description.
REFERENCES:
patent: 1685707 (1928-09-01), Keedy
patent: 2417762 (1947-03-01), Koller
patent: 2976075 (1961-03-01), Budreck
patent: 3009727 (1961-11-01), Jones et al.
patent: 3079191 (1963-02-01), Engelsted et al.
patent: 3198566 (1965-08-01), Floros et al.
patent: 3250962 (1966-05-01), Palme
patent: 3257141 (1966-06-01), Buus et al.
patent: 3320686 (1967-05-01), Blackburn
patent: 3487964 (1970-01-01), Riley
patent: 4620739 (1986-11-01), Coralline
patent: 4722283 (1988-02-01), Holley
patent: 4943099 (1990-07-01), Gabriel
patent: 5292165 (1994-03-01), Wiklund
patent: 5435613 (1995-07-01), Jung
patent: 5845950 (1998-12-01), Stowe et al.
patent: 2115847 (1972-10-01), None
patent: 2509003 (1976-09-01), None
patent: 2821817 (1979-11-01), None
patent: 1094296 (1964-09-01), None
patent: 2184603 (1987-06-01), None
patent: 1527123 (1989-12-01), None
patent: 1557053 (1990-04-01), None
patent: 1812103 (1993-04-01), None
Carruth Cary
Modrak Ronald P.
Cherry Johnny D.
DaimlerChrysler Corporation
Shurupoff Lawrence J.
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