Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Oppositely acting double wedge expander means
Patent
1997-05-08
1998-10-06
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Oppositely acting double wedge expander means
411 33, 411 55, 411 60, F16B 1304, F16B 1306
Patent
active
058167595
ABSTRACT:
An expansion anchor installable in a pre-drilled hole formed in a base material. The expansion anchor includes a bolt having a shaft with a head portion, an opposing end portion, and a threaded portion. A shoulder is disposed on the shaft intermediate the head portion and the end portion thereof, and an expandable sleeve is disposed about the shaft between the shoulder and the end portion of the shaft. The expandable sleeve has an expandable upper sleeve portion and an expandable lower sleeve portion wherein the expandable lower sleeve portion is expandable outwardly before the expandable upper sleeve portion is expandable outwardly. A nut having a substantially conical surface is fixed rotationally in the pre-drilled hole and is engagable with the threaded portion of the shaft. The substantially conical surface of the nut is engageable with the expandable lower sleeve portion so as to expand the lower sleeve portion until the nut is axially fixed in the pre-drilled hole. The advancing bolt is subsequently drawn into the pre-drilled hole and the shoulder of the shaft is engagable with the expandable upper sleeve portion so as to outwardly expand the upper sleeve portion, whereby the expandable upper and lower sleeve portions are engageable with the wall of the pre-drilled hole so as to retain the expansion anchor therein.
REFERENCES:
patent: 570786 (1896-11-01), Church
patent: 660559 (1900-10-01), Church
patent: 719426 (1903-02-01), Boone
patent: 945403 (1910-01-01), Mohun
patent: 1120367 (1914-12-01), Rohmer
patent: 1120408 (1914-12-01), Rohmer et al.
patent: 1120410 (1914-12-01), Rohmer et al.
patent: 1639231 (1927-08-01), Ogden
patent: 1852089 (1932-04-01), Pleister et al.
patent: 3213744 (1965-10-01), Wagner
patent: 3493163 (1970-02-01), Hodil, Jr.
patent: 3703119 (1972-11-01), Lerich
patent: 3742809 (1973-07-01), Zifferer
patent: 3766819 (1973-10-01), Giannuzzi
patent: 3911782 (1975-10-01), Liebig
patent: 3974734 (1976-08-01), Machtle
patent: 4056037 (1977-11-01), McIntyre
patent: 4100834 (1978-07-01), Harris
patent: 4114654 (1978-09-01), Richardson
patent: 4195547 (1980-04-01), Giannuzzi
patent: 4330230 (1982-05-01), Giannuzzi
patent: 4484848 (1984-11-01), Ott
patent: 4537541 (1985-08-01), Giannuzzi
patent: 4772166 (1988-09-01), Shamah et al.
patent: 4789282 (1988-12-01), Abraham et al.
patent: 4854793 (1989-08-01), Ollivier et al.
patent: 4904135 (1990-02-01), Barthomeuf et al.
patent: 4946325 (1990-08-01), Abraham
patent: 5161916 (1992-11-01), White et al.
patent: 5169269 (1992-12-01), Tatematsu et al.
patent: 5593261 (1997-01-01), Giannuzzi
Ernst Richard J.
Paul Sigismund G.
Yates Edward D.
Illinois Tool Works Inc.
Wilson Neill R.
LandOfFree
Expansion anchor and method therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Expansion anchor and method therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Expansion anchor and method therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-71611