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US 5,139,604 AGranted
Controlled bladder wrap tool system
OwnerCharles P. Mitchellinventor
Life of this patent
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Abstract
A controlled bladder wrap tool system and method are disclosed for edge wrapping a substrate in a tool with consistent process control. An expandable bladder or bladder diaphragm is mounted in the tool adjacent a cavity where it expands when inflated to fill the cavity and to bend, fold or wrap an overhanging portion of pliable material onto a substrate which are mounted in the tool.
Claims13
A controlled bladder wrap tool system for wrapping a portion of pliable material over an edge of a substrate comprising:
- upper and lower tool bases;
- inner and outer tool parts;
- means securing said inner tool part to one of said tool bases and said outer tool part to the other of said tool bases;
- means providing for relative movement between said tool bases to locate said tool parts spaced apart and in an opened position ready to receive the substrate and pliable material or in a closed position where said inner tool part is located within said outer tool part and where a portion of the pliable material is ready for wrapping over an edge of the substrate;
- one of said inner and outer tool parts having a support surface for supporting the substrate and the pliable material which has an overhanging portion which overlies and extends beyond an edge of the substrate;
- and
- a fluid expandable bladder diaphragm secured to one of said inner and outer tool parts, and, when expanded, cooperable with the other of said tool parts when said tool parts are in a closed position to engage the overhanging portion of the pliable material to wrap it over the edge of the substrate.
4 more elements
Dependencies are inferred from the claim text.