Back to results
US 4,437,921 AGranted
Press for gluing footwear elements
AssigneeAnver
InventorLucien Bichet
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAnver
InventorLucien Bichet
Estimating the term…
A press for gluing footwear elements to each other comprising a tank and means for supporting an article of footwear in the tank. A flexible pocket or elastic membrane is positioned in the tank and is adapted to envelope at least the portion of the article of footwear which includes the footwear elements which are to be glued to each other. The press includes a jack having a cylinder and a piston movable in the cylinder, the piston being adapted to be moved by the application of a pressurized pneumatic fluid to one surface of the piston. The opposite surface of the piston communicates with a liquid supply in the tank, whereby movement of the piston is operable to force the liquid under pressure against the flexible pocket or elastic membrane to cause the flexible pocket to conform to the contour of the footwear elements whereby to cause the elements to become glued to each other. Means is provided for moving the piston to a retracted position when the pneumatic pressure is released. This means for causing the piston to move to a retracted position may comprise a cross member connected to a portion of the piston rod which projects beyond the cylinder and spring means engageable with the cross member for normally biasing the piston and the piston rod to a retracted position.
A press for gluing footwear elements to each other comprising a tank, means for supporting an article of footwear in said tank, a flexible pocket adapted to envelope at least the portion of said article of footwear which includes said footwear elements which are to be glued to each other, wherein the improvement comprises a jack including a cylinder and a piston movable in said cylinder, said piston being adapted to be moved by the application of a pressurized pneumatic fluid to one surface of said piston, the opposite surface of said piston communicating with a liquid supply in said tank, whereby movement of said piston is operable to force said liquid under pressure against said flexible pocket to cause said flexible pocket to conform to the contour of the footwear elements which are to be glued to each other whereby to cause said elements to become glued to each other, and means for moving said piston to a retracted position when the pneumatic pressure on said piston is relieved.
Dependencies are inferred from the claim text.