Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Head having counter-sinking means
Reexamination Certificate
2000-02-25
2009-10-20
Saether, Flemming (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Head having counter-sinking means
C411S188000
Reexamination Certificate
active
07604445
ABSTRACT:
The invention relates to a countersunk head screw having a head (1), a shank (2) and a thread (3) extending at least partly over the shank (2). The head (1) has a bearing surface (4), narrowing in the direction of the shank (2), and a basic contour (5) which converges at a first angle (α) in a first head section (5a) remote from the shank (2) and at a second, smaller angle (β) in a second head section (5b) facing the shank (2). In order to avoid, for example, undesirable deformations, splintering, tearing or the like, provision is made for friction ribs (6) to be arranged in the region of the bearing surface (4), and these friction rigs (6) extend over the two head sections (5a, 5b) and, with their outer edges (K), follow the converging basic contour (5) of the head (1), so that in each case the first edge section (6a), lying in the region of the first head section (5a), and a second edge section (6b), lying in the region of the second head section (5b), of the outer edges (K) of the friction ribs (6) enclose an obtuse angle (γ) with one another. The bearing surface (4) is set back radially in the direction of the shank (2) relative to the converging basic contour (5) of the head (1).
REFERENCES:
patent: 5199839 (1993-04-01), De Haitre
patent: 5205694 (1993-04-01), Nagoshi et al.
patent: 5249882 (1993-10-01), Nagoshi et al.
patent: 5772376 (1998-06-01), Konig
patent: 6050765 (2000-04-01), McGovern et al.
patent: 6394725 (2002-05-01), Dicke
patent: 6941635 (2005-09-01), Craven
patent: 2005/0226701 (2005-10-01), Craven
patent: 89 01 963 (1989-11-01), None
patent: 0 516 431 (1992-12-01), None
patent: 997716 (1967-08-01), None
A-Z Ausrustung und Zubehor GmbH & Co. KG
Brinks Hofer Gilson & Lione
Saether Flemming
LandOfFree
Countersunk head screw does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Countersunk head screw, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Countersunk head screw will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4126693