B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
4/46
B29C 51/00 (2006.01)
Patent
CA 1211905
ABSTRACT In renovating bathrooms, it is known to form a unitary tub and shower enclosure out of a suitable plastic material, usually acrylic. However because of the large size of these enclosures, it is necessary to cut them into, for example, three pieces so that they can be taken through the bathroom door. Once in the bathroom, they are re-assembled, with joints between the pieces. One type of joint utilizes an H-shaped sealing member of vinyl material which is softer than acrylic and not as attractive in appearance, particularly after some time when it deteriorates. Also, the joint thus formed is not entirely satisfactory. The present invention provides an improved joint between the pieces in which mateable surfaces extending backwards from the front surfaces are mechanically joined, preferably with silicone sealant between the surfaces. The surfaces can slope so that any moisture tends to drip down into the tub. Also, each joint can have an over- hanging lip so that water running down the wall of the enclosure will drip into the tub and not go into the joint. The enclosure is made by thermoforming a sheet of thermoplastic material to include mateable surfaces between different sections, but with regions of waste material extending between the mateable surfaces. This material is simply cut away so that the mateable surfaces can be joined together mechanically.
439298
Heatley Frank R.
Unger Wolfgang
Smart & Biggar
Waltec Inc.
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