US4615554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw-in fastener for a tubular anchor embedded in a concrete element
Assignee: Deha Baubedarf GmbH and Co KG
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Filing: 1984-07-02
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Granted: 1986-10-07
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Expires: 2004-07-02
Abstract
Abstract A screw-in fastener for an anchor embedded in a precast concrete element includes a coupling member, to which a transport anchor is applied, a threaded pin insertable into the anchor positioned within the concrete element, and a supporting plate, from which the pin outwardly extends. The supporting plate has a circular end face supported against the upper surface of the concrete element.
Inventors
- 👤 Henning Schilla
- 👤 Ernst Hatz
- 👤 Eckart Zipf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:05
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/62; B66C1/66; B66C1/666; E; E04; E04G; E04G21/00; E04G21/14; E04G21/142
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
193 words
A screw-in fastener for a tubular anchor embedded in a precast concrete element having a first and a second supporting surface, comprising a threaded pin screwable into said tubular anchor; a supporting plate having an underside, from which said threaded pin extends outwardly, said supporting plate having a first supporting face extended normally to said pin and concentrically surrounding the latter, said supporting face being supported on said first supporting surface of said concrete element when said pin is screwed in said anchor, said supporting plate having an upper side and being formed at said upper side with a recess; and a coupling member for coupling the fastener with a transport anchor, said coupling member being positioned in said recess and connected to said supporting plate, said supporting plate having an additional supporting face, said additional supporting face being parallel to and concentrical with said first supporting face, said additional supporting face being offset relative to said first supporting face along an axis of said supporting plate and in the direction away from said pin, said additional supporting face abutting against said second supporting surface when said pin is screwed in said anchor.
Claim 2
Dependent Claim
193 words
A screw-in fastener for a tubular anchor embedded in a precast concrete element having a first and a second supporting surface, comprising a threaded pin screwable into said tubular anchor; a supporting plate having an underside, from which said threaded pin extends outwardly, said supporting plate having a first supporting face extended normally to said pin and concentrically surrounding the latter, said supporting face being supported on said first supporting surface of said concrete element when said pin is screwed in said anchor, said supporting plate having an upper side and being formed at said upper side with a recess; and a coupling member for coupling the fastener with a transport anchor, said coupling member being positioned in said recess and connected to said supporting plate, said supporting plate having an additional supporting face, said additional supporting face being parallel to and concentrical with said first supporting face, said additional supporting face being offset relative to said first supporting face along an axis of said supporting plate and in the direction away from said pin, said additional supporting face abutting against said second supporting surface when said pin is screwed in said anchor.
Claim 3
Dependent Claim
22 words
The fastener as defined in claim 1, wherein said recess has a spherical shape to match a surface of the transport achor.
Claim 4
Dependent Claim
24 words
The fastener as defined in claim 2, wherein said coupling member includes a shaft portion and an enlarged head conected to the shaft portion.
Claim 5
Dependent Claim
25 words
The fastener as defined in claim 2, wherein said coupling member is a shackle extended perpendicularly to said supporting plate and having a transversal bore.
Claim 6
Dependent Claim
22 words
The fastener as defined in claim 2, wherein said pin, said supporting plate and said coupling member being an integral one-piece element.
Claim 7
Dependent Claim
210 words
In a combination of screw-in fastener inserted in a tubular anchor embedded in a precast concrete element having a recess, a first surface outside of said recess and a second surface provided at a bottom of said recess, the fastener comprising a threaded pin screwable into said tubular anchor; a supporting plate having an underside, from which said threaded pin extends outwardly, said supporting plate having a first supporting face extended normally to said pin and concentrically surrounding the latter, said supporting face being supported in assembly on said first surface of said concrete element when said pin is screwed in said anchor, said supporting plate having an upper side and being formed at said upper side with a recess; and a coupling member for coupling the fastener with a transport anchor, said coupling member being positioned in said recess of said supporting plate and connected to said supporting plate, said supporting plate having an additional supporting face, said additional supporting face being parallel to and concentrical with said first supporting face, said additional supporting face being offset relative to said first supporting face along an axis of said supporting plate and in the direction away from said pin, said additional supporting face abutting against said second surface in assembly.
Claim 8
Dependent Claim
210 words
In a combination of screw-in fastener inserted in a tubular anchor embedded in a precast concrete element having a recess, a first surface outside of said recess and a second surface provided at a bottom of said recess, the fastener comprising a threaded pin screwable into said tubular anchor; a supporting plate having an underside, from which said threaded pin extends outwardly, said supporting plate having a first supporting face extended normally to said pin and concentrically surrounding the latter, said supporting face being supported in assembly on said first surface of said concrete element when said pin is screwed in said anchor, said supporting plate having an upper side and being formed at said upper side with a recess; and a coupling member for coupling the fastener with a transport anchor, said coupling member being positioned in said recess of said supporting plate and connected to said supporting plate, said supporting plate having an additional supporting face, said additional supporting face being parallel to and concentrical with said first supporting face, said additional supporting face being offset relative to said first supporting face along an axis of said supporting plate and in the direction away from said pin, said additional supporting face abutting against said second surface in assembly.
Claim 9
Dependent Claim
22 words
The combination as defined in claim 6, wherein said recess has a spherical shape to match a surface of the transport anchor.
Claim 10
Dependent Claim
24 words
The combination as defined in claim 6, wherein said coupling member includes a shaft portion and an enlarged head connected to the shaft portion.
Claim 11
Dependent Claim
25 words
The combination as defined in claim 7, wherein said coupling member is a shackle extended perpendicularly to said supporting plate and having a transversal bore.
Claim 12
Dependent Claim
22 words
The fastener as defined in claim 6, wherein said pin, said supporting plate and said coupling member being an integral one-piece element.
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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) | 1989-10-06 | 1990-04-07 | 1990-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-06 | 1994-04-07 | 1994-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-06 | 1998-04-07 | 1998-10-07 | $7700.00 | Window Closed / Lapsed |