Metal working – Method of mechanical manufacture – Combined manufacture including applying or shaping of fluent...
Reexamination Certificate
2007-04-10
2007-04-10
Omgba, Essama (Department: 3726)
Metal working
Method of mechanical manufacture
Combined manufacture including applying or shaping of fluent...
C029S432100, C029S446000, C198S337000, C264S248000, C264S249000, C264S279100
Reexamination Certificate
active
10951919
ABSTRACT:
Two opposite ends of a handrail stock member are joined to form a handrail having a closed-loop configuration for an escalator or the like. A slot is cut into each end, parallel to a longitudinal reinforcement layer of the handrail stock member. A joint reinforcement insert including longitudinally-oriented high-strength high-stiffness fibers is inserted into the two slots and the two ends are butted together. A thermoplastic matrix material of the handrail stock member in the joint area is heated to a softening or melting temperature and is press-molded to penetrate into the reinforcement insert and bond the insert to portions of the reinforcement layer overlapped by the insert. The matrix material is fused across the junction plane. A pressing mold maintains the defined outer contour of the handrail.
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Fasse W. F.
Fasse W. G.
New-York Hamburger Gunni-Waaren Compagnie AG
Omgba Essama
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