Screw

Details Screw Screw

2006-08-15

2006-08-15

Sandy, Robert J. (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Externally threaded fastener element, e.g., bolt, screw, etc.

Pilot end having means enhancing fastening or installation

C411S412000

Reexamination Certificate

active

07090453

ABSTRACT:
A screw which can be more quickly screwed into a work piece and has better chip-exhausting effect. The screw has a rod body and higher thread and lower thread formed on the rod body. On a conic section of the screw, a cutting thread with another guide angle larger than the guide angle of the lower thread directly extends from the lower thread. Accordingly, the lower thread of the screw has better cuffing, drilling and chip-exhausting function. Alternatively, the screw can have single thread or double threads with equal height. On a predetermined section of the rod body of the screw, a cutting thread with changed guide angle is directly formed as a part of the thread to achieve better cutting, drilling and chip-exhausting function.

REFERENCES:
patent: 413968 (1889-10-01), Rogers
patent: 1084643 (1914-01-01), Lasater
patent: 1651796 (1927-12-01), Arenz
patent: 1749903 (1930-03-01), Cannon
patent: 1802668 (1931-04-01), Newton
patent: 2263137 (1941-11-01), Oestereicher
patent: 3207023 (1965-09-01), Knohl
patent: RE28111 (1974-08-01), Laverty
patent: 3942405 (1976-03-01), Wagner
patent: 4027573 (1977-06-01), Laverty
patent: 4241638 (1980-12-01), Shimizu et al.
patent: 4323326 (1982-04-01), Okada et al.
patent: 4329099 (1982-05-01), Shimizu et al.
patent: 4536117 (1985-08-01), Yamashiro
patent: 4655661 (1987-04-01), Brandt
patent: 4834602 (1989-05-01), Takasaki
patent: 4844676 (1989-07-01), Adamek
patent: 4874278 (1989-10-01), Kawashita
patent: 5015134 (1991-05-01), Gotoh
patent: 5061136 (1991-10-01), Dixon et al.
patent: 5282708 (1994-02-01), Giannuzzi
patent: RE34969 (1995-06-01), Dixon et al.
patent: 5570983 (1996-11-01), Hollander
patent: 5957646 (1999-09-01), Giannuzzi et al.
patent: 6000892 (1999-12-01), Takasaki
patent: 6015252 (2000-01-01), Peck
patent: 6322307 (2001-11-01), Glover
patent: 6328516 (2001-12-01), Hettich
patent: 6616391 (2003-09-01), Druschel
patent: 6644904 (2003-11-01), Chen et al.
patent: 6739815 (2004-05-01), Takasaki
patent: 6887023 (2005-05-01), Lu et al.
patent: 2003/0118423 (2003-06-01), Chen et al.
patent: 2005/0069396 (2005-03-01), Wu
NPL http://www.mcmaster.com . . . Catalogue “Drywall Screws”.

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