US4893974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite plug for mounting objects in a drilled hole in masonry
Assignee: Fischerwerke Artur Fischer GmbH and Co KG
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Filing: 1989-01-09
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Granted: 1990-01-16
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Expires: 2009-01-09
Abstract
Abstract The composite plug for mounting objects in holes drilled in masonry and the like comprises a plug body having a screw passage for receiving a mounting screw and an expanding region expandable by insertion of the mounting screw, the plug body being provided with outlet openings for mortar introduced into the plug body, channels forming guiding surfaces in the screw passage, the guiding surfaces leading to the outlet openings and subdividing the screw passage into a front region and a rear region, and grooves forming longitudinal channels extending along an outside of the plug body, the outlet openings merging into the logitudinal channels. The outlet openings are located in the front region and the screw passage has a portion with an increased diameter. A stopper which is insertable in the portion of the screw passage of increased diameter is provided and formed as a hollow member. The stopper has openings which are in a alignment with the outlet openings.
Inventors
- 👤 Artur Fischer
- 👤 Jorg Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:33
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/14; F16B13/141; F16B13/146
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
140 words
A plug, comprising a plug body having a screw passage for receiving a mounting screw and an expanding region expandable by insertion of said mounting screw, said screw passage having a portion with an increased diameter, said plug body being provided with outlet openings for mortar introduced into said plug body; means forming guide surfaces in said screw passage, said guide surfaces leading to said outlet openings and subdividing said screw passage into a front region and a rear region, said outlet openings being located in said front region; means forming longitudinal channels extending along an outside of said plug body, said outlet openings merging into said longitudinal channels; and a stopper which is inserted in said portion of said increased diameter and formed as a hollow member, said stopper having openings which are in alignment with said outer openings.
Claim 2
Dependent Claim
140 words
A plug, comprising a plug body having a screw passage for receiving a mounting screw and an expanding region expandable by insertion of said mounting screw, said screw passage having a portion with an increased diameter, said plug body being provided with outlet openings for mortar introduced into said plug body; means forming guide surfaces in said screw passage, said guide surfaces leading to said outlet openings and subdividing said screw passage into a front region and a rear region, said outlet openings being located in said front region; means forming longitudinal channels extending along an outside of said plug body, said outlet openings merging into said longitudinal channels; and a stopper which is inserted in said portion of said increased diameter and formed as a hollow member, said stopper having openings which are in alignment with said outer openings.
Claim 3
Dependent Claim
28 words
A plug as defined in claim 1, wherein said stopper has wedge-shaped surfaces which form said guide surfaces, said guide surfaces leading to said openings of said stopper.
Claim 4
Dependent Claim
24 words
A plug as defined in claim 1, wherein said stopper and said plug body are provided with corresponding centering elements cooperating with one another.
Claim 5
Dependent Claim
26 words
A plug as defined in claim 1; and further comprising an expansible, narrow-meshed fabric which surrounds said plug body and is fixedly connected with the latter.
Claim 6
Dependent Claim
24 words
A plug as defined in claim 4, wherein said fabric has two ends and is connected with said plug body at both said ends.
Claim 7
Dependent Claim
16 words
A plug as defined in claim 1, wherein said plug body has a non-smooth outer surface.
Claim 8
Dependent Claim
17 words
A plug as defined in claim 6, wherein said outer surface of said plug body is structured.
Claim 9
Dependent Claim
17 words
A plug as defined in claim 6, wherein said outer surface of said plug body is roughened.
Claim 10
Dependent Claim
101 words
A plug, comprising a plug body having a screw passage for receiving a mounting screw with a portion and an expanding region expandable by insertion of said mounting screw, said plug body being provided with outlet openings for mortar introduced into said plug body; means forming guide surfaces in said screw passage, said guide surfaces leading to said outlet openings and subdividing said screw passage into a front region and a rear region, means forming longitudinal channels extending along an outside of said plug body, said outlet openings merging into said longitudinal channels, and a thin membrane forming said guide surfaces.
Claim 11
Dependent Claim
101 words
A plug, comprising a plug body having a screw passage for receiving a mounting screw with a portion and an expanding region expandable by insertion of said mounting screw, said plug body being provided with outlet openings for mortar introduced into said plug body; means forming guide surfaces in said screw passage, said guide surfaces leading to said outlet openings and subdividing said screw passage into a front region and a rear region, means forming longitudinal channels extending along an outside of said plug body, said outlet openings merging into said longitudinal channels, and a thin membrane forming said guide surfaces.
Claim 12
Dependent Claim
17 words
A plug as defined in claim 9, wherein said thin membrane is connected with said plug body.
Claim 13
Dependent Claim
21 words
A plug as defined in claim 9, wherein said thin membrane is formed of one piece integrally with said plug body.
Claim 14
Dependent Claim
96 words
A plug, comprising a plug body having a screw passage for receiving a mounting screw and an expanding region expandable by insertion of said mounting screw, said plug body being provided with outlet openings for mortar introduced into said plug body; means forming guide surfaces in said screw passage, said guide surfaces leading to said outlet openings and subdividing said screw passage into a front region and a rear region, and means forming longitudinal channels with a V-shaped cross section extending along an outside of said plug body, said outlet openings merging into said longitudinal channels.
Claim 15
Dependent Claim
96 words
A plug, comprising a plug body having a screw passage for receiving a mounting screw and an expanding region expandable by insertion of said mounting screw, said plug body being provided with outlet openings for mortar introduced into said plug body; means forming guide surfaces in said screw passage, said guide surfaces leading to said outlet openings and subdividing said screw passage into a front region and a rear region, and means forming longitudinal channels with a V-shaped cross section extending along an outside of said plug body, said outlet openings merging into said longitudinal channels.
Claim 16
Dependent Claim
32 words
A plug as defined in claim 12, wherein said plug body has a wall, said longitudinal channels extending completely through said wall and being provided at a bottom with a small gap.
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) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |