US3566739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anchoring device
Assignee: Individual
•
Filing: 1969-02-07
•
Granted: 1971-03-02
•
Expires: 1989-02-07
Abstract
Abstract An improved anchor is provided by a single piece that is preshaped to define both an expander and sleeve positioned in endwise relation to each other and interconnected through a connection that is shearable upon bottoming the sleeve on the bottom wall of an aperture and then sharply striking the distal end of the expander to shear said connection and simultaneously telescope the expander into the sleeve. The portion of the sleeve adjacent the shearable connection may be thinned for easier rupture and a portion of the sleeve may be slotted for ease in expansion.
Inventors
- 👤 Charles S Lebar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:51
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/04; F16B13/08; F16B13/0858
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
In an elongated anchor device of the type including an expander portion, having a circumferentially continuous and uninterrupted frustoconical exterior for telescoping into an end of a sleeve and secured at its reduced end by a shearable connection to an expandable sleeve member; the improvement comprising the said sleeve member having an inner cylindrical surface and being shaped exteriorly to provide a cylindrical section spaced from the said reduced end of the expander by an intervening frustoconical, thinned, section, said frustoconical, thinned section having a circumferentially continuous and uninterrupted inner cylindrical periphery and a circumferentially continuous and uninterrupted frustoconical outer periphery, and said cylindrical section of the sleeve being slotted along its length through the thickness of the sleeve wall to provide for ease of expansion of said cylindrical portion of the sleeve member.
Claim 2
Dependent Claim
134 words
In an elongated anchor device of the type including an expander portion, having a circumferentially continuous and uninterrupted frustoconical exterior for telescoping into an end of a sleeve and secured at its reduced end by a shearable connection to an expandable sleeve member; the improvement comprising the said sleeve member having an inner cylindrical surface and being shaped exteriorly to provide a cylindrical section spaced from the said reduced end of the expander by an intervening frustoconical, thinned, section, said frustoconical, thinned section having a circumferentially continuous and uninterrupted inner cylindrical periphery and a circumferentially continuous and uninterrupted frustoconical outer periphery, and said cylindrical section of the sleeve being slotted along its length through the thickness of the sleeve wall to provide for ease of expansion of said cylindrical portion of the sleeve member.
Claim 3
Dependent Claim
194 words
In an elongated anchor device of the type including an expander portion, having a circumferentially continuous and uninterrupted frustoconical exterior for telescoping into an end of a sleeve and secured at its reduced end by a shearable connection to an expandable sleeve member; the improvement comprising the said sleeve member having an inner cylindrical surface and being shaped exteriorly to provide a cylindrical section spaced from the said reduced end of the expander by an intervening frustoconical, thinned, section, said frustoconical, thinned section having a circumferentially continuous and uninterrupted inner cylindrical periphery and a circumferentially continuous and uninterrupted frustoconical outer periphery, and said cylindrical section of the sleeve being slotted along its length through the thickness of the sleeve wall to provide for ease of expansion of said cylindrical portion of the sleeve member, and the frustoconical exterior of the expander portion providing two bands of circumferentially continuous and uninterrupted surface spaced apart by a circumferentially continuous band of knurling that is adapted for increased gripping engagement with the inner surface of the sleeve member, when the expander portion is telescoped into the sleeve, to prevent relative rotation between the expander and the sleeve.
Claim 4
Dependent Claim
194 words
In an elongated anchor device of the type including an expander portion, having a circumferentially continuous and uninterrupted frustoconical exterior for telescoping into an end of a sleeve and secured at its reduced end by a shearable connection to an expandable sleeve member; the improvement comprising the said sleeve member having an inner cylindrical surface and being shaped exteriorly to provide a cylindrical section spaced from the said reduced end of the expander by an intervening frustoconical, thinned, section, said frustoconical, thinned section having a circumferentially continuous and uninterrupted inner cylindrical periphery and a circumferentially continuous and uninterrupted frustoconical outer periphery, and said cylindrical section of the sleeve being slotted along its length through the thickness of the sleeve wall to provide for ease of expansion of said cylindrical portion of the sleeve member, and the frustoconical exterior of the expander portion providing two bands of circumferentially continuous and uninterrupted surface spaced apart by a circumferentially continuous band of knurling that is adapted for increased gripping engagement with the inner surface of the sleeve member, when the expander portion is telescoped into the sleeve, to prevent relative rotation between the expander and the sleeve.
References Cited (Backward Citations)
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US2102230A
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US2252316A
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US3216304A
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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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |