Back to results
US 5,725,341 AGranted
Self fusing fastener
OwnerOskar Hofmeisterinventor
Life of this patent
Estimating the term…
Abstract
I claim a self fusing fastener device with radially expansible wings that permanently lock into place through an adhesive means which causes the fastener to act as a single rigid attaching element that resists pull out as a result of the interference fit produced by the radially expansible folding and flaring elements.
Claims20
An improved fastener that comprises:
- a) a tube having a bore extending there through, said tube having a first end and a second end, said tube having a first tube section with said first end, and a second tube section with said second end, a middle tube section between said first and said second tube sections, said second tube section is internally tapered to narrow the bore as the taper proceeds from the second end, said second tube section having a plurality of longitudinal slots, said slots circumferentially disposed around said second tube section and extending there through, said slots extending from the second end for the partial length of said second tube section, said middle section having a plurality of longitudinal slits, said slits circumferentially disposed around said middle tube section and extending therethrough,
- b) a flange extending radially outward from the first end of said tube,
- c) a shoulder extending radially inward from the second end of said tube,
- d) an adhesive mass disposed within said tube,
- e) a plug disposed within the bore of said second tube section, said plug having a bore, said plug bore concentrically aligned with said fastener tube bore, said plug captured inside said second tube section by said shoulder and the narrowed tapered section,
- f) a serrated member protruding from said plug and contacting said tube's inner surface whereby an interference contact is made between the serrated member and said tube wall preventing plug rotation,
- g) a screw having a head end and a threaded end, said screw extending through said tube bore, the thread end engaged with said plug.
4 more elements
An improved fastener that comprises:
- a) a tube having a bore extending there through, said tube having a first end and a second end, said tube having a first tube section with said first end, and a second tube section with said second end, a middle tube section between said first and said second tube sections, said middle section having a plurality of longitudinal slits, said slits circumferentially disposed around said middle tube section and extending therethrough,
- b) a flange extending radially outward from the first end of said tube,
- c) a shoulder extending radially inward from the second end of said tube, said shoulder having a bore concentrically aligned with said tube bore,
- d) an adhesive mass disposed within said tube,
- e) a screw having a head end and a threaded end, said screw extending through said tube bore and received by said shoulder bore, the screw's threaded end engaged with said shoulder.
2 more elements
An improved fastener that comprises:
- a) a tube having a bore extending there through, said tube having a first end and a second end, said tube having a first tube section with said first end, and a second tube section with said second end, said second tube section is internally tapered to narrow the bore as the taper proceeds from the second end, said second tube section having a plurality of longitudinal slots, said slots circumferentially disposed around said second tube section and extending there through, said slots extending from the second end for the partial length of said second tube section,
- b) a flange extending radially outward from the first end of said tube,
- c) a shoulder extending radially inward from the second end of said tube,
- d) an adhesive mass disposed within said tube,
- e) a plug disposed within the bore of said second tube section, said plug having a bore, said plug bore concentrically aligned with said fastener tube bore, said plug captured inside said second tube section by said shoulder and the narrowed tapered section,
- f) a serrated member protruding from said plug and contacting said tube's inner surface whereby an interference contact is made between the serrated member and said tube wall preventing plug rotation,
- g) a screw having a head end and a threaded end, said screw extending through said tube bore, the thread end engaged with said plug, and the screw head adjacent to said flange.
4 more elements
An improved fastener that comprises:
- a) a tube having a bore extending there through, said tube having a first end and a second end, said tube having a first tube section with said first end, and a second tube section with said second end, a middle tube section between said first and said second tube sections, said middle section having a plurality of longitudinal slits, said slits circumferentially disposed around said middle tube section and extending therethrough,
- b) a flange extending radially outward from the first end of said tube,
- c) a shoulder extending radially inward from the second end of said tube, said shoulder having a bore concentrically aligned with said tube bore,
- d) an adhesive mass disposed within said tube,
- e) a pull chord affixed to said plug and extending through said tube bore and exiting the first end of said tube.
2 more elements
Dependencies are inferred from the claim text.