US4044647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spreadable anchor assembly
Assignee: Individual
•
Filing: 1975-01-15
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Granted: 1977-08-30
•
Expires: 1995-01-15
Abstract
Abstract The present invention provides a spreadable anchor assembly comprising a plural leg flange nut with a perforated cap carrying a driven spreader, the cap being made of thick paper and having centrally a perforated circular line inside the top opening of the flange nut, the top of the spreader adhering to the lower side of the cap.
Inventors
- 👤 Kenryu Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:25
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/04; F16B13/08; F16B13/12; F16B13/126
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
237 words
A spreadable anchor assembly, adapted to be fixed to an opening of a wall or the like, comprising an elongated tubular sleeve having opposed open ends and being formed with inner threads at the region of one of said open ends while being formed with longitudinally extending slits extending along said sleeve from the other of the open ends thereof to define spreadable legs between said slits, said sleeve being formed with an inner tapered opening at the region of said spreadable legs thereof and having adhered to said one open end in a position extending across and closing said one open end of said sleeve a cap of easily ruptured sheet material which has an inner surface directed toward the other open end of said sleeve, and an elongated tapered spreader element adhered to said cap at said inner surface thereof and situated in the interior of said sleeve, so that a punch may be applied to said cap to rupture the latter while driving said spreader element into the inner tapered opening of said sleeve to spread said legs thereof outwardly into engagement with the surface of an opening which is formed in a wall or the like for anchoring said sleeve thereto, the rupturing of said cap and the driving of said spreader element into the tapered opening to spread said legs uncovering the inner threads so that a screw may be received therein.
Claim 2
Dependent Claim
237 words
A spreadable anchor assembly, adapted to be fixed to an opening of a wall or the like, comprising an elongated tubular sleeve having opposed open ends and being formed with inner threads at the region of one of said open ends while being formed with longitudinally extending slits extending along said sleeve from the other of the open ends thereof to define spreadable legs between said slits, said sleeve being formed with an inner tapered opening at the region of said spreadable legs thereof and having adhered to said one open end in a position extending across and closing said one open end of said sleeve a cap of easily ruptured sheet material which has an inner surface directed toward the other open end of said sleeve, and an elongated tapered spreader element adhered to said cap at said inner surface thereof and situated in the interior of said sleeve, so that a punch may be applied to said cap to rupture the latter while driving said spreader element into the inner tapered opening of said sleeve to spread said legs thereof outwardly into engagement with the surface of an opening which is formed in a wall or the like for anchoring said sleeve thereto, the rupturing of said cap and the driving of said spreader element into the tapered opening to spread said legs uncovering the inner threads so that a screw may be received therein.
Claim 3
Dependent Claim
13 words
The combination of claim 1 and wherein said cap is made of paper.
Claim 4
Dependent Claim
33 words
The combination of claim 1 and wherein said cap is formed with a line of perforations extending along a circle the diameter of which is smaller than the inner diameter of the sleeve.
Claim 5
Dependent Claim
34 words
The combination of claim 1 and wherein said sleeve is formed at said other end thereof with inwardly extending flanges separated by said slits and defining said tapered opening for receiving said spreader element.
Claim 6
Dependent Claim
34 words
The combination of claim 4 and wherein said spreader element has at its end which initially is adhered to said cap a lip for engaging said flanges at said other end of said sleeve.
Claim 7
Dependent Claim
49 words
The combination of claim 1 and wherein said sleeve is formed at said one end thereof with an outwardly extending flange for limiting the movement of the sleeve into an opening in a wall or the like and for increasing the area of engagement between said sleeve and cap.
Claim 8
Dependent Claim
69 words
The combination of claim 1 and wherein said spreader element is formed at its end which is adhered to said inner surface of said cap with an indentation for receiving an end of a punch and said cap having an outer surface formed with a central mark aligned with said indentation for indicating the place at said cap to which the end of a punch is to be applied.
Claim 9
Dependent Claim
44 words
The combination of claim 1 and wherein said sleeve is formed at the exterior of said legs thereof with threads to be pressed into the surface of an opening in a wall or the like when the legs are spread apart from each other.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |