Banded door sill base and door sill assembly, and method of forming same
First Claim
1. A banded doorsill base for disposition between a pair of door jambs of a door frame, the doorsill base comprising:
- an elongate central portion formed from a material having a first coefficient of linear expansion, said central portion having first and second opposite sides;
a first strip attached to and extending along said first side; and
a second strip attached to and extending along said second side, said first and second strips formed from a material having a second coefficient of linear expansion less than the first coefficient, said first and second strips substantially constraining linear expansion of said central portion.
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Abstract
The present invention is directed to a banded doorsill base for disposition between a pair of doorjambs of a door frame. The doorsill base includes an elongate central portion formed from a polymeric material having a first coefficient of linear expansion, and first and second wooden strips bonded to and extending along opposite sides of the central portion for constraining the central portion and preventing linear expansion thereof. The first and second strips are formed from a material having a second coefficient of linear expansion less than the first coefficient. The first and second strips substantially prevent linear expansion of the central portion. The present invention also relates to a method of forming the banded doorsill base, and to a doorsill assembly having a banded doorsill base.
67 Citations
26 Claims
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1. A banded doorsill base for disposition between a pair of door jambs of a door frame, the doorsill base comprising:
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an elongate central portion formed from a material having a first coefficient of linear expansion, said central portion having first and second opposite sides;
a first strip attached to and extending along said first side; and
a second strip attached to and extending along said second side, said first and second strips formed from a material having a second coefficient of linear expansion less than the first coefficient, said first and second strips substantially constraining linear expansion of said central portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A doorsill assembly, comprising:
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a base having an elongate polymer central portion having a first coefficient of linear expansion and first and second outer strips secured to opposite longitudinal edges of said central portion, said outer strips formed from a material having a second coefficient of linear expansion less than the first coefficient, said outer strips substantially constraining linear expansion of said central portion;
an elongate threshold member disposed over and connected to said base; and
an elongate cover panel connected to and overlying a portion of said base. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A banded doorsill base for disposition between a pair of door jambs of a door frame, the doorsill base comprising:
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an elongate central portion formed from a polymeric material having a first coefficient of linear expansion, said central portion having first and second opposite sides;
a first wooden strip attached to and extending along said first side; and
a second wooden strip attached to and extending along said second side, said first and second wooden strips having a second coefficient of linear expansion less than the first coefficient, said first and second wooden strips constraining said central portion and substantially preventing linear expansion thereof.
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26. A method of forming a banded doorsill base, comprising the steps of:
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providing a central portion formed from one of a polymer material and a wood fiber-resin composite and having a first coefficient of linear expansion;
adhesively bonding a first wood strip to a first edge of the central portion; and
adhesively bonding a second wood strip to a second edge of the central portion opposite the first edge, the first and second wood strips having a second coefficient of linear expansion less than the first coefficient so that the first and second wood strips substantially constrain linear expansion of the central portion.
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Specification