Expandable screw anchoring devices

Details Expandable screw anchoring devices Expandable screw anchoring devices

1974-08-06

1976-03-09

Allen, Edward C.

F16B 1304

Patent

active

039424073

ABSTRACT:
The invention relates to a screw anchoring device adapted to be inserted in a bored hole and of the type having a tubular anchoring member moulded from plastics material and provided with longitudinally -- for example axially or helically -- extending slits or slots. The anchoring member cooperates with a screw in such a manner that the anchoring member may be axially compressed and thereby radially expanded by tightening of the screw. A sleeve or tubular member inserted in one end of the anchoring member cooperates with an internal shoulder abutment within the anchoring member, whereby the anchoring device is made universally applicable so that it may be mounted as well in through holes in panels or plates as in nonthrough holes in solid walls whether these walls are made from more or less pressure resistant materials and whether the diameters of the bored holes correspond more or less to the outer diameter of the anchoring device. The sleeve inserted in the tubular anchoring member may be of a semi-rigid, deformable material, and between the sleeve and the internal shoulder an expansion member may be arranged. The expansion member is driven into the adjacent end of the sleeve when the anchoring device is axially compressed to assist radial bulging of the respective end portion of the anchoring member.

REFERENCES:
patent: 1929743 (1933-10-01), Janvis
patent: 2236079 (1941-03-01), Wipper
patent: 2513193 (1950-06-01), Miller
patent: 2525736 (1950-10-01), Taylor
patent: 2753610 (1956-07-01), Miller
patent: 2918841 (1959-12-01), Poupitch
patent: 3009747 (1961-11-01), Pitzer
patent: 3257889 (1966-06-01), Fischer

Affiliated with

Also associated with

Rating

Expandable screw anchoring devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Expandable screw anchoring devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Expandable screw anchoring devices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-824680