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US 7,329,446 B2Granted
Drill stack formation
AssigneeInternational Business Machines Corporation
InventorsRobert M. Japp, Gregory A. Kevern, Francis S. Poch
Life of this patent
Estimating the term…
Abstract
The present invention provides a structure. The structure includes a stack of sheets. Successive sheets in each pair of successive sheets of the stack are coupled to each other by a removable adhesive. The removable adhesive is also disposed on top and bottom surfaces of the stack so as to respectively couple first and second layers to the cop and bottom surfaces of the stack.
Claims22
A structure, comprising:
- a stack of two or more sheets, wherein successive sheets in each pair of successive sheets of the stack are adhesively coupled to each other by an adhesive layer consisting of a removable adhesive, wherein the adhesive layer is in direct mechanical contact with the successive sheets in each pair, and wherein the removable adhesive is also disposed on top and bottom surfaces of the stack, and wherein the removable adhesive consists of a liquid while adhesively coupling the successive sheets to each other;
- a first surface of a first layer coupled with the removable adhesive to a first surface of the stack;
- and
- a first surface of a second layer coupled with the removable adhesive to a second surface of the stack, wherein the first and second layers are adapted to prevent burr formation in a hole subsequently drilled through the stack.
1 more element
A structure, comprising:
- a plurality of stacks, wherein each stack and its adjacent stack of the plurality of stacks are both coupled with a removable adhesive to an intermediate layer therebetween, wherein each intermediate layer is adapted to prevent burr formation in a hole subsequently drilled through the stack, wherein each stack comprises a plurality of sheets such that each sheet and its adjacent sheet of the plurality of sheets are adhesively coupled to each other with an adhesive layer consisting of the removable adhesive, wherein the adhesive layer is in direct mechanical contact with said each sheet and its adjacent sheet, and wherein the removable adhesive consists of a liquid while adhesively coupling said each sheet with its adjacent sheet.
Dependencies are inferred from the claim text.