Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap
Patent
1987-05-26
1989-10-31
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
411412, 411424, 411999, 4034081, F16B 2100, F16B 3504
Patent
active
048773646
ABSTRACT:
This invention relates to an improved captive screw and assembly, and particularly a screw which may be held loosely captive in the threaded hole of a support member. The invention comprises a machine screw or cold formed fastener with an unthreaded interrupted mid-section that separates two spaced-apart threaded portions of the fastener, with both threaded portions of the fastener preferably of a similar thread size, and with the unthreaded mid-section of the screw of a diameter less than the root diameter of the threaded sections. The screw may be completely removed or readily installed into threaded engagement with a female threaded hole in the support member, when necessary, by first manually aligning the fastener axis with the axis of the threaded hole, then rotating the fastener to engage the starting threads of the fastener with those of the female threaded hole, and further continued rotating of the fastener in a conventional manner. The fastener may clamp a panel member to the support member. The panel member may be formed with a shaped hole to enable removal of the panel member from engagement with the fastener, when the fastener is held in the loosely captive mode to the support member.
REFERENCES:
patent: 1927780 (1933-09-01), Anderson
patent: 2123764 (1938-07-01), Berry
patent: 2907419 (1959-10-01), Klank, Jr.
patent: 2987811 (1961-06-01), Acres
patent: 3295874 (1967-01-01), Allen
patent: 3390904 (1968-07-01), Jonelis
patent: 3426321 (1969-02-01), Peterson, Jr.
patent: 3888064 (1975-06-01), Basile
patent: 3986318 (1976-10-01), McConnell
patent: 4032806 (1977-06-01), Seely
patent: 4085650 (1978-04-01), Flynn
patent: 4411552 (1983-10-01), Lanham et al.
Schaer, J. A., Western Electric Technical Digest, No. 34, Apr. 1974, pp. 31-32.
General DataComm. Inc.
Gordon David P.
Wilson Neill R.
LandOfFree
Captive screw and assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Captive screw and assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Captive screw and assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-623060