US3765296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion anchor for use in support structures of relatively soft material
Assignee: Individual
•
Filing: 1971-08-30
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Granted: 1973-10-16
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Expires: 1991-08-30
Abstract
Abstract An expansion anchor sleeve is composed of two elongated shell sections of U-shaped cross-section whose open sides face one another and are bounded by juxtaposed edge faces. A transverse recess is provided in the front portion of the sleeve tapering towards the rear portion and bounded by sections of the aforementioned edge faces on which an expander member, located in the recess, rides when it is drawn rearwardly by a threaded actuating member.
Inventors
- 👤 A Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:26
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/04; F16B13/06; F16B13/063; F16B13/066; F16B13/08; F16B13/0808
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
268 words
An expansion anchor for use in support structures of relatively soft material, comprising an expansion anchor sleeve having a front portion and a rear portion and comprising a pair of elongated shell sections of substantially U-shaped crosssection, each having a pair of substantially parallel side walls bounded at one side by edge faces and integrally joined at the other side by a bight wall angularly related to said side walls, the side walls of one of said shell sections overlapping the side walls of the other shell section and the bight walls of said shell sections facing each other to define with said side walls a space of substantially rectangular configuration; a transverse recess in said front portion and bounded by sections of said edge faces which converge from said front portion towards said rear portion, each edge face section extending from the bight wall of one shell section towards the bight wall of the other shell section and having on the overlapping portion of the respective side wall an upper end adjacent said bight wall of the other shell section; an expander member located in said recess and extending transversely to the elongation of said sleeves; and threaded means extending from the region of said rear portion towards said front portion and being fast with said expander member, turning of said threaded means in the requisite sense resulting in displacement of said expander member in direction towards said rear portion in sliding engagement with said edge faces and leading to a concomittant outward deflection of said shell sections at least in the region of said front portion.
Claim 2
Dependent Claim
268 words
An expansion anchor for use in support structures of relatively soft material, comprising an expansion anchor sleeve having a front portion and a rear portion and comprising a pair of elongated shell sections of substantially U-shaped crosssection, each having a pair of substantially parallel side walls bounded at one side by edge faces and integrally joined at the other side by a bight wall angularly related to said side walls, the side walls of one of said shell sections overlapping the side walls of the other shell section and the bight walls of said shell sections facing each other to define with said side walls a space of substantially rectangular configuration; a transverse recess in said front portion and bounded by sections of said edge faces which converge from said front portion towards said rear portion, each edge face section extending from the bight wall of one shell section towards the bight wall of the other shell section and having on the overlapping portion of the respective side wall an upper end adjacent said bight wall of the other shell section; an expander member located in said recess and extending transversely to the elongation of said sleeves; and threaded means extending from the region of said rear portion towards said front portion and being fast with said expander member, turning of said threaded means in the requisite sense resulting in displacement of said expander member in direction towards said rear portion in sliding engagement with said edge faces and leading to a concomittant outward deflection of said shell sections at least in the region of said front portion.
Claim 3
Dependent Claim
247 words
An expansion anchor for use in support structures of relatively soft material, comprising an expansion anchor sleeve having a front portion and a rear portion and comprising a pair of elongated shell sections of substantially U-shaped cross-section, each having a pair of substantially parallel side walls bounded at one side by edge faces and integrally joined at the other side by a bight wall, the side walls of one of said shell sections overlapping the side walls of the outer shell section and the bight walls of said shell sections facing each other; a transverse recess in said front portion and bounded by sections of said edge faces which converge from said front portion towards said rear portion, each edge face section extending from the bight wall of one shell section towards the bight wall of the other shell section and having an upper end located on the portion of the respective side wall which substantially overlaps the other side wall; an expansion member located in said recess and extending transversely to the elongation of said sleeve; and threaded means extending from the region of said rear portion towards said front portion and being fast with said expander member, turning of said threaded means in requisite sense resulting in displacement of said expander member in direction towards said rear portion in sliding engagement with said edge faces and leading to a concomittant outward deflection of said shell sections at least in the region of said front portion.
Claim 4
Dependent Claim
247 words
An expansion anchor for use in support structures of relatively soft material, comprising an expansion anchor sleeve having a front portion and a rear portion and comprising a pair of elongated shell sections of substantially U-shaped cross-section, each having a pair of substantially parallel side walls bounded at one side by edge faces and integrally joined at the other side by a bight wall, the side walls of one of said shell sections overlapping the side walls of the outer shell section and the bight walls of said shell sections facing each other; a transverse recess in said front portion and bounded by sections of said edge faces which converge from said front portion towards said rear portion, each edge face section extending from the bight wall of one shell section towards the bight wall of the other shell section and having an upper end located on the portion of the respective side wall which substantially overlaps the other side wall; an expansion member located in said recess and extending transversely to the elongation of said sleeve; and threaded means extending from the region of said rear portion towards said front portion and being fast with said expander member, turning of said threaded means in requisite sense resulting in displacement of said expander member in direction towards said rear portion in sliding engagement with said edge faces and leading to a concomittant outward deflection of said shell sections at least in the region of said front portion.
Claim 5
Dependent Claim
27 words
An expansion anchor as defined in claim 2; and further comprising connecting means connecting said shell sections with one another in the region of said rear portion.
Claim 6
Dependent Claim
29 words
An expansion anchor as defined in claim 3, said connecting means comprising interengaging notches and projections provided on the respective shell sections in the region of said rear portion.
Claim 7
Dependent Claim
34 words
An expansion anchor as defined in claim 3, and further comprising slots provided in said side walls forwardly of said connecting means and extending at least to the proximity of the respective bight wall.
Claim 8
Dependent Claim
21 words
An expansion anchor as defined in claim 2; and further comprising a cap covering and extending forwardly of said front portion.
Claim 9
Dependent Claim
18 words
An expansion anchor as defined in claim 6, wherein said cap is of one piece with said sleeve.
Claim 10
Dependent Claim
58 words
An expansion anchor as defined in claim 7, and wherein each of said bight walls comprises a wall portion extending forwardly of said side walls and of the leading end of said front portion, said wall portions extending towards one another transversely of a longitudinal axis of said sleeve and across said recess and together constituting said cap.
References Cited (Backward Citations)
US13177A
Cited
US1019723A
Cited
FR430603A
Cited
US1109955A
Cited
US1471911A
Cited
FR767444A
Cited
US3366000A
Cited
US3623396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |