Vacuum flitch table system

Details Vacuum flitch table system Vacuum flitch table system

2005-05-24

2005-05-24

Ostrager, Allen (Department: 3725)

Woodworking

Veneer lathe

C251S063500, C251S175000

Reexamination Certificate

active

06896018

ABSTRACT:
Vacuum flitch-retaining systems use vacuum valves having pressure-operated reciprocatable pistons capable of high valve closure forces to provide the reliable closure of their associated valve seats, notwithstanding the presence of resin, wood fibers, dirt and other debris that may be present in the valves and on the valve seats, to control the application of vacuum to vacuum cells formed in a flitch-retaining table.

REFERENCES:
patent: 3633613 (1972-01-01), Julow
patent: 3905408 (1975-09-01), Hale
patent: 3907268 (1975-09-01), Hale
patent: 5374021 (1994-12-01), Kleinman
patent: 5385184 (1995-01-01), Mellor
patent: 5590700 (1997-01-01), Brand
patent: 5836568 (1998-11-01), Ishigaki et al.
patent: 6367770 (2002-04-01), Duelli
patent: 6431518 (2002-08-01), Geiser
patent: 6460564 (2002-10-01), Rief et al.

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