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Vanderzwet; Daniel P.
Amherstburg, CA
No. of patents:

Patent Number Title Of Patent Date Issued
7223933 Low impact spot welding cylinder with single piston May 29, 2007
A weld cylinder having a single piston arrangement is provided. The cylinder has a movable retract piston assembly with the piston arranged within the retract piston assembly. The piston supports a rod that is movable between home, intermediate, work, and advanced work positions. The
7214902 Low impact spot welding cylinder with dual pistons May 8, 2007
The present invention provides a weld cylinder having a dual piston arrangement. The cylinder has a middle separator separating the cylinder into two cavities. A retract piston assembly is arranged within one cavity. One of the pistons is arranged in the retract piston assembly and t

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