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
Patent
1987-08-31
1989-10-17
Gall, Lloyd A.
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
408226, 411387, 411412, F16B 2502
Patent
active
048742783
ABSTRACT:
Wood screw comprising a head for receiving a fastening tool and a shank extending from the head. The shank is provided at the tip thereof with a tip guide portion adapted to penetrate an article to be fastened while boring a hole into the article such as timber. The shank is provided at the head side thereof with a fastening screw portion having at least a single screw thread. A chips removing screw portion is disposed between the tip guide portion and the fastening screw portion. The chips removing screw portion has screw threads, the number of which is greater than that of the fastening screw portion. The screw thread lead angle of the chips removing screw portion is larger than that of the fastening screw portion.
REFERENCES:
patent: 408531 (1889-08-01), Rogers
patent: 410697 (1889-09-01), Rogers
patent: 684774 (1901-10-01), Baggs
patent: 1084643 (1914-01-01), Lasater
patent: 2263137 (1941-11-01), Oestereicher
patent: 3665801 (1972-05-01), Gutshall
patent: 3699841 (1972-10-01), Lanius, Jr.
patent: 3739682 (1973-06-01), Siebol et al.
patent: 3827331 (1974-08-01), Muenchinger
patent: 4241638 (1980-12-01), Shimizu et al.
patent: 4655661 (1987-04-01), Brandt
Gall Lloyd A.
Kabushiki Kaisha Yamahiro
LandOfFree
Wood screw with chip removing portion does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wood screw with chip removing portion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wood screw with chip removing portion will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1740327