Band shaped connected screws with inverse screw threads

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Thread or shank structure

Reexamination Certificate

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Details

C411S442000, C206S344000, C206S345000

Reexamination Certificate

active

07029220

ABSTRACT:
A plurality of screws (21) are aligned in parallel with each other, and head side portions (21b) of shaft portions (21A) of the screws are fixed, by a band (30) fixed to a strip sheet (31), to be band-shaped connected screws (20). Further, in the band-shaped connected screws (20), the head side portion (21b) of the shaft portion (21A) of each screw (21) is formed with an inverse screw thread (23) formed inverse direction to a screw thread (22) formed at the shaft portions (21A).

REFERENCES:
patent: 867552 (1907-10-01), Bradford
patent: 3031670 (1962-05-01), Sillars
patent: 3256661 (1966-06-01), Fischer
patent: 3885669 (1975-05-01), Potucek
patent: 4653244 (1987-03-01), Farrell
patent: 4836372 (1989-06-01), Shelton
patent: 5839332 (1998-11-01), Fujiyama et al.
patent: 6074149 (2000-06-01), Habermehl et al.
patent: 6585113 (2003-07-01), Shiu
patent: 6616391 (2003-09-01), Druschel
patent: 6666638 (2003-12-01), Craven
patent: 0870696 (1998-10-01), None
patent: 8-284933 (1996-11-01), None
patent: WO95/29794 (1995-11-01), None

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