Patent US3667341A successfully refreshed from Google Patents.
US3667341A
Expired / Lapsed
US
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Anchor bolt
Assignee: STANCHART BUSINESS CREDIT Inc A CORP OF
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Filing: 1970-07-06
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Granted: 1972-06-06
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Expires: 1990-07-06
Abstract
Abstract This invention relates to an improvement in anchor bolts having a plurality of slots forming sleeve legs having bridge portions of narrow width, said legs being moved outwardly in a drilled masonry well or hole to rigidly engage the well wall upon suitable operation of the bolt. The improvement consists of the provision of suitable stampings in said bridge portions to form projections adapted to engage the well wall in non-rotative engagement upon insertion in a well. Moreover, the stamped out projection re-enforces the narrow bridge portion of the sleeve thereby preventing premature collapse or rollback upon insertion in close-fitting holes.
Inventors
- 👤 Stanley Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:21
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/04; F16B13/06; F16B13/063; F16B13/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A sleeve deformable longitudinal anchor bolt for insertion into an seizure of a suitably drilled hole in masonry material consisting essentially of a bolt having a threaded end and a tapered end opposed thereto; a cylindrical non-bowed sleeve disposed on said bolt and provided with a plurality of circumferentially disposed elongated longitudinal aperture slots forming bridge portions therebetween, said sleeve having a smooth surface top and bottom portions, said bottom portion having a plurality of cut-line slits each extending to a slot to form a plurality of flexible legs engaging said tapered end of said bolt; a radially outwardly disposed imperforate protuberant projection of substantially the length of said bridge and having a substantially planar exterior surface and stamped centrally in each bridge portion for the re-enforcemant thereof and seizure to the hole wall of said masonry material upon insertion therein; and a nut having a threaded aperture threaded on said bolt and adapted to expand said legs outwardly for locking engagement To said masonry material.
Claim 2
Dependent Claim
166 words
A sleeve deformable longitudinal anchor bolt for insertion into an seizure of a suitably drilled hole in masonry material consisting essentially of a bolt having a threaded end and a tapered end opposed thereto; a cylindrical non-bowed sleeve disposed on said bolt and provided with a plurality of circumferentially disposed elongated longitudinal aperture slots forming bridge portions therebetween, said sleeve having a smooth surface top and bottom portions, said bottom portion having a plurality of cut-line slits each extending to a slot to form a plurality of flexible legs engaging said tapered end of said bolt; a radially outwardly disposed imperforate protuberant projection of substantially the length of said bridge and having a substantially planar exterior surface and stamped centrally in each bridge portion for the re-enforcemant thereof and seizure to the hole wall of said masonry material upon insertion therein; and a nut having a threaded aperture threaded on said bolt and adapted to expand said legs outwardly for locking engagement To said masonry material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |