Elongated-member-driving apparatus – With means to form member prior to penetration of work – Deflector
Patent
1979-03-26
1980-06-10
Bell, Paul A.
Elongated-member-driving apparatus
With means to form member prior to penetration of work
Deflector
227120, 227 19, B25C 502
Patent
active
042068630
ABSTRACT:
A staple for use in conjunction with an anviless stapling apparatus of generally U-shaped plan form configuration where the width of each end of the crown portion of the staple in a direction orthogonal to the plane of the staple is less than the effective width of the associated leg portions of the staple. Also, a self-clinching stapling apparatus, which has no anvil, and includes a nosepiece structure whose only moving part is a driver element. The nosepiece structure of the stapling apparatus defines a drive track whose cross section corresponds to the configuration of the crown portion of the specially designed staple. The nosepiece structure of the stapling apparatus further defines elongated grooves, disposed at an angle relative to the longitudinal axis of the drive track. During a stapling operation, the driver element is actuated causing the staple to move downwardly through the drive track towards the workpiece. The wider staple legs are simultaneously engaged in and guided by the angled grooves in the nosepiece structure. While the crown of the staple passes unimpeded through the drive track towards the workpiece, the wider staple legs are channeled and bent by the angled grooves.
REFERENCES:
patent: 2117742 (1938-05-01), Polzer
patent: 2817339 (1957-12-01), Sullivan
patent: 3152335 (1964-10-01), Wandel et al.
patent: 3291357 (1966-12-01), Ruskin
patent: 3807619 (1974-04-01), Doyle
Bell Paul A.
Casella Anthony J.
Stallman Michael A.
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