Joints and connections – Split end with laterally movable opposed portions – With separate force-applying means
Reexamination Certificate
2005-08-09
2005-08-09
Cottingham, John R. (Department: 2116)
Joints and connections
Split end with laterally movable opposed portions
With separate force-applying means
C403S289000
Reexamination Certificate
active
06926459
ABSTRACT:
A fitting for releasably constructing a structure from tubing. The structure may be a machine housing providing safety during machine operation, which housing requires removal for machine maintenance. The fitting includes a corner piece and at least two arms extending from the corner piece, each arm having a central axis and an outwardly extending slice through the arm separating a distal end of each arm into a first finger portion and a second finger portion. A threaded hole orthogonal to the central axis and centered on the slice, has tapered threads. A screw resides in the threaded hole, wherein the screw and threaded hole have cooperating threads (e.g., cooperating tapered threads). A tubing end is slid over the arm, and includes an access opening allowing access to the screw. The screw may be advanced into the threaded hole, thereby spreading the finger portions and locking the tubing on the arm.
REFERENCES:
patent: 3008741 (1958-12-01), MacCormack
patent: 3545625 (1970-12-01), MacMillan
patent: 3580620 (1971-05-01), Offenbroich
patent: 3620558 (1971-11-01), MacMillan et al.
patent: 4086946 (1978-05-01), Keen
patent: 4252458 (1981-02-01), Keen
patent: 4585210 (1986-04-01), Adams
Averill, Jr. Edgar W.
Cottingham John R.
Green Kenneth L.
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