Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Means assembling part within hole or aperture
Patent
1992-01-08
1993-05-11
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Means assembling part within hole or aperture
156 92, 156578, 222137, 222333, 411 82, B29C 6552, B32B 708, F16B 3902
Patent
active
052098052
ABSTRACT:
A fastener system to join lightweight panels such as honeycomb or foam core panels. The fastener system comprises a unique hollow, threaded fastener pin (12) and drive assembly (18). The drive assembly (18) attaches to an electric drill and is made up of a cartridge housing (14) for carrying a disposable, dual piston (epoxy resin and hardener) cartridge (20), and a plunger assembly, clutch mounted to the cartridge housing (14). The nose (62) of the cartridge (20) is adapted to receive the proximal end of the pin (12). The plunger assembly (16) mounts to the chuck of the drill. The panels are aligned and the pin (12), mounted to the nose (62) of the cartridge housing (14), is placed against the panels at the point to be joined. The drill is activated and the pin (12) is threaded in until its flared, distal end (26) is seated flush against the skin of the panel. The torque increase on the drive assembly (18) caused by such seating disengages the clutch of the plunger assembly (16), causing rotation between the now stationary housing (14) and still rotating plunger (16), driving the plungers (80a) and (80b) into the pistons (80) of the cartridge (20) and injecting the epoxy resin and hardener through a mixing nozzle (21) into and through the hollow pin (12), into the surrounding panel to harden and lock the pin (12) and panels together.
REFERENCES:
patent: 2663662 (1953-12-01), Graf
patent: 3184353 (1965-05-01), Balamuth
patent: 3302832 (1967-02-01), Hardman
patent: 3781961 (1974-01-01), Schenk
patent: 4538920 (1985-09-01), Drake
patent: 4767026 (1988-08-01), Keller
patent: 4871088 (1989-10-01), Cox
patent: 5033650 (1991-07-01), Colin
Ball Michael W.
Stemmer Daniel J.
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