US3279301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion anchor assembly
Assignee: Individual
•
Filing: 1964-02-12
•
Granted: 1966-10-18
•
Expires: 1984-02-12
Abstract
No abstract record available.
Inventors
- 👤 Fischer Artur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:47
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/002; F16B13/12; F16B13/124; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
AN EXPANSION ANCHOR ASSEMBLY FOR HOLDING ARTICLES AT THE EXPOSED SIDES OF BRITTLE WALL STRUCTURE WHICH ARE PROVIDED WITH EXPANSION ANCHOR HOLES, COMPRISING AN ELONGATED SLEEVE HAVING A LONGITUDINALLY EXTENDING SLOT AND COMPRISING A CUTTER PORTION AT ONE END THEREOF SO THAT SAID SLEEVE MAY BE UTILIZED AS A TOOL FOR DRILLING THE HOLE IN WHICH THE EXPANSION ANCHOR ASSEMBLY IS INSTALLED AND THEREUPON REMAINS IN THE THUS DRILLED HOLE; AN EXPANDER COMPRISING A RADIALLY EXPANDIBLE TUBULAR PORTION RECEIVED IN SAID SLEEVE AND A PROJECTION RECEIVED IN SAID SLOT AND HAVING A PORTION NORMALLY EXTENDING INTO THE INTERIOR OF SAID TUBULAR PORTION; AND FASTENER COMPRISING AN ELONGATED STEM EXTENDING INTO SAID SLEEVE AND INTO SAID TUBULAR PORTION SO THAT SAID TUBULAR PORTION EXPANDS TO DEFORM SAID SLEEVE INTO STRONG FRICTIONAL ENGAGEMENT WITH THE MATERIAL OF THE WALL STRUCTURE AND SAID PROJECTION IS MOVED RADIALLY OUTWARDLY BEYOND THE OUTLINE OF SAID SLEEVE AND INTO ENGAGEMENT WITH THE MATERIAL SURROUNDING THE HOLE IN WHICH THE SLEEVE IS RECEIVED TO PREVENT EXTRACTION OF SAID FASTENER.
Claim 2
Dependent Claim
172 words
AN EXPANSION ANCHOR ASSEMBLY FOR HOLDING ARTICLES AT THE EXPOSED SIDES OF BRITTLE WALL STRUCTURE WHICH ARE PROVIDED WITH EXPANSION ANCHOR HOLES, COMPRISING AN ELONGATED SLEEVE HAVING A LONGITUDINALLY EXTENDING SLOT AND COMPRISING A CUTTER PORTION AT ONE END THEREOF SO THAT SAID SLEEVE MAY BE UTILIZED AS A TOOL FOR DRILLING THE HOLE IN WHICH THE EXPANSION ANCHOR ASSEMBLY IS INSTALLED AND THEREUPON REMAINS IN THE THUS DRILLED HOLE; AN EXPANDER COMPRISING A RADIALLY EXPANDIBLE TUBULAR PORTION RECEIVED IN SAID SLEEVE AND A PROJECTION RECEIVED IN SAID SLOT AND HAVING A PORTION NORMALLY EXTENDING INTO THE INTERIOR OF SAID TUBULAR PORTION; AND FASTENER COMPRISING AN ELONGATED STEM EXTENDING INTO SAID SLEEVE AND INTO SAID TUBULAR PORTION SO THAT SAID TUBULAR PORTION EXPANDS TO DEFORM SAID SLEEVE INTO STRONG FRICTIONAL ENGAGEMENT WITH THE MATERIAL OF THE WALL STRUCTURE AND SAID PROJECTION IS MOVED RADIALLY OUTWARDLY BEYOND THE OUTLINE OF SAID SLEEVE AND INTO ENGAGEMENT WITH THE MATERIAL SURROUNDING THE HOLE IN WHICH THE SLEEVE IS RECEIVED TO PREVENT EXTRACTION OF SAID FASTENER.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |