Patent CA1076313A successfully refreshed from Google Patents.
CA1076313A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Apparatus for preforming a wall covering from a sheet of plastic laminate
Assignee: Individual
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Filing: 1978-10-31
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Granted: 1980-04-29
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Expires: 1998-10-31
Abstract
Abstract APPARATUS FOR PREFORMING A WALL COVERING FROM A SHEET OF PLASTIC LAMINATE Abstract of the Disclosure A single sheet of standard grade plastic laminate material is bent at two locations to form it into a side wall and two end walls corresponding to the side wall and two end walls of a bathtub recess. The plastic laminate material is located between a support bed and a press assembly of a forming apparatus. The bed includes a pair of parallel forming tubes having exterior forming surfaces and thermostatically controlled internal heating elements for controlling the temperature of the forming surfaces. The press assembly includes a pair of wing members which are movable to bend the end portions of the plastic laminate material about the two forming tubes. Following forming the formed corner portions are tempered by applying water to them.
Inventors
- 👤 Melvin A. Stratis
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-07 20:43
CPC Classifications
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Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
217 words
Apparatus for preforming a covering for side and end walls of a tub-recess from a single sheet of plastic laminate material, comprising: a support structure; a parallel pair of elongated forming tubes secured to said support structure a distance apart substantially equal to the width of a tub-recess side wall, said tubes including outer forming surfaces of a predetermined radius; said support structure including a support bed between said tubes, the upper portion of which is substantially tangent to the uppermost portions of said forming tubes, a press assembly movable relatively towards and away from said support bed, said press assembly including an inter-mediate portion cooperable with said support bed and the uppermost portions of the forming tubes to hold therebetween an intermediate portion of a sheet of plastic laminate material to be formed, and pivotally movable wing portions hinge connected to said intermediate portion along hinge lines which extend parallel to said forming tubes; said hinge lines being offset laterally from the forming tubes a sufficient distance to allow the forming wings, and hence the end portions of the plastic sheet, to be folded down-wardly an amount greater than ninety degrees from the plane of the support bed; and means for heating the sheet of plastic laminate in the regions thereof that contact the forming tubes.
Claim 2
Dependent Claim
217 words
Apparatus for preforming a covering for side and end walls of a tub-recess from a single sheet of plastic laminate material, comprising: a support structure; a parallel pair of elongated forming tubes secured to said support structure a distance apart substantially equal to the width of a tub-recess side wall, said tubes including outer forming surfaces of a predetermined radius; said support structure including a support bed between said tubes, the upper portion of which is substantially tangent to the uppermost portions of said forming tubes, a press assembly movable relatively towards and away from said support bed, said press assembly including an inter-mediate portion cooperable with said support bed and the uppermost portions of the forming tubes to hold therebetween an intermediate portion of a sheet of plastic laminate material to be formed, and pivotally movable wing portions hinge connected to said intermediate portion along hinge lines which extend parallel to said forming tubes; said hinge lines being offset laterally from the forming tubes a sufficient distance to allow the forming wings, and hence the end portions of the plastic sheet, to be folded down-wardly an amount greater than ninety degrees from the plane of the support bed; and means for heating the sheet of plastic laminate in the regions thereof that contact the forming tubes.
Claim 3
Dependent Claim
49 words
Apparatus according to claim 1, comprising a pair of spray bars for delivering tempering water to the corner regions of the wall covering, said spray bars being mounted on said press assembly and being adapted to deliver water to the regions of the forming surfaces of the forming tubes.
Claim 4
Dependent Claim
15 words
Apparatus according to claim 2, further comprising trough means positioned to collect excess tempering water.
Claim 5
Dependent Claim
15 words
Apparatus according to claim 1, wherein said heating means is located within said forming tubes.
Claim 6
Dependent Claim
209 words
Apparatus for preforming a covering for side and end walls of a tub-recess from a single sheet of plastic laminate material, comprising: a support structure; a parallel pair of elongated forming tubes secured to said support structure a distance apart substantially equal to the width of a tub-recess side wall, said tubes including outer forming surfaces of a predetermined radius and internal means for heating said outer forming surfaces; said support structure including a support bed between said tubes, the upper portion of which is substantially tangent to the uppermost portions of said forming tubes, a press assembly movable relatively towards and away from said support bed, said press assembly including an inter-mediate portion cooperatable with said support bed and the uppermost portions of the forming tubes to hold therebetween an intermediate portion of a sheet of plastic laminate material to be formed, and pivotally movable wing portions hinge connec-ted to said intermediate portion along hinge lines which extend parallel to said forming tubes; and said hinge lines being offset laterally from the forming tubes a sufficient distance to allow the forming wings, and hence the end portions of the plastic sheet, to be folded downwardly an amount greater than ninety degrees from the plane of the support bed.
Claim 7
Dependent Claim
209 words
Apparatus for preforming a covering for side and end walls of a tub-recess from a single sheet of plastic laminate material, comprising: a support structure; a parallel pair of elongated forming tubes secured to said support structure a distance apart substantially equal to the width of a tub-recess side wall, said tubes including outer forming surfaces of a predetermined radius and internal means for heating said outer forming surfaces; said support structure including a support bed between said tubes, the upper portion of which is substantially tangent to the uppermost portions of said forming tubes, a press assembly movable relatively towards and away from said support bed, said press assembly including an inter-mediate portion cooperatable with said support bed and the uppermost portions of the forming tubes to hold therebetween an intermediate portion of a sheet of plastic laminate material to be formed, and pivotally movable wing portions hinge connec-ted to said intermediate portion along hinge lines which extend parallel to said forming tubes; and said hinge lines being offset laterally from the forming tubes a sufficient distance to allow the forming wings, and hence the end portions of the plastic sheet, to be folded downwardly an amount greater than ninety degrees from the plane of the support bed.
Claim 8
Dependent Claim
49 words
Apparatus according to claim 5, comprising a pair of spray bars for delivering tempering water to the corner regions of the wall covering, said spray bars being mounted on said press assembly and being adapted to deliver water to the regions of the forming surfaces of the forming tubes.
Claim 9
Dependent Claim
15 words
Apparatus according to claim 6, further comprising trough means positioned to collect excess tempering water.
References Cited (Backward Citations)
No citation records indexed.
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