B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
154/7
B29C 43/36 (2006.01) B29C 33/02 (2006.01) B30B 15/06 (2006.01) F16G 3/16 (2006.01) B29C 43/00 (2006.01)
Patent
CA 1172152
HEATED PRESS PLATE FOR CONVEYOR BELT REPAIR AND CONSTRUCTION Abstract A press plate of rectangular or rhombic plan used in apparatus for repair of conveyor belts or for making them continuous by joining the ends. The basic structure consists of a framework, a heated plate on the side to which material to be pressed is applied, an outside cover plate and a heating system having area heating elements in the form of tube-type heating elements and/or resistance heater plates of specified heat output. The framework comprises an outer framework of four outer framing elements of equal cross-section and a plurality of tranverse equal cross-section inner framing members parallel to and equidistant from one another and parallel to two opposite sides of the outer framework. The heating elements are arranged in the spaces between the inner framing members and spaced from the outer framing elements. To achieve the most uniform possible temperature distribution and to insure uniformity when several press plate units are combined to form a press plate assembly, the heated plate is divided in plan view into center heating zones (MH), transverse-edge heating zones (QH), corner heating zones (EH), and longitudinal-edge heating zones (LH). The center heating zones (MH) are of rectangular or parallelogram shape in plan view and include one of the inner frame members running centrally longitudinally, and define a basic heating area for the heated plate. Their corners extend to the area of the outer framing elements. The longitudinal-edge heating zones (LH) are parallel to the inner frame members and include an outer frame element. The transverse-edge heating zones (QH) and the corner heating zones (EH) complete the heated plate. The specific volumes of material in all the heating zones (MH, LH, QH, EH) are equal. The heating elements in the spaces between the inner frame members are each shared equally between two adjacent center heating zones (MH). Those arranged in the spaces between the inner frame members and the adjacent longitudinal outer frame element are shared between the respective centre heating zone and the adjacent longitudinal side zone. The heating elements in the center zones (MH), in the transverse-edge zones (QH), in the longitudinal side-edge zones (LH), and the corner zones (EH) have equal specific heat outputs.
388734
Borden Ladner Gervais Llp
Wagener Schwelm G.m.b.h. & Co.
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