Joints and connections – Molded joint – Fusion bond – e.g. – weld – etc.
Patent
1996-06-18
1997-07-15
Kim, Harry C.
Joints and connections
Molded joint
Fusion bond, e.g., weld, etc.
403164, 403300, 256 59, 256 67, B23K 100
Patent
active
056476817
ABSTRACT:
A stairs rail connector which is pre-manufactured as a semicircular turning rail, including two curved tubes with identical dimension. Each curved tube has an interconnecting end and a connecting end. The interconnecting end of one curved tube is disposed with a shaft seat therein, while the interconnecting end of the other curved tube is disposed with a shaft ring therein, whereby the interconnecting ends are rotatably connected with each other, permitting the curved tubes to be freely 360 degrees rotated relative to each other. After the curved tubes are rotated to a position corresponding to the turning angle between an upper and a lower rails, the connecting ends of the curved tubes are inserted into and secured in the openings of the upper and lower rails to connect the same at the turning angle.
REFERENCES:
patent: 3233871 (1966-02-01), Schroer
patent: 3552775 (1971-01-01), Warner
patent: 3733055 (1973-05-01), Hughes, Jr.
patent: 3787033 (1974-01-01), Snyder et al.
patent: 4475840 (1984-10-01), Schmitt et al.
patent: 4557467 (1985-12-01), Lin
patent: 4637589 (1987-01-01), Lin
patent: 4646490 (1987-03-01), Naka et al.
Kim Harry C.
Klein David I.
Rosenberg Morton J.
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