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US 12,398,555 B2Granted
Undercut anchor
AssigneeBlack & Decker Inc.
InventorsPhilipp Mahrenholtz, Alan Armiento
Life of this patent
Estimating the term…
Abstract
An undercut anchor having an at least partially threaded rod portion having an outer thread diameter DROD. The anchor having an expansion feature coupled to the rod portion and an expansion sleeve having an outer diameter DOUTER SLEEVE, an inner diameter DINNER SLEEVE and a wall thickness TSLEEVE. Furthermore, the expansion sleeve has a plurality of circumferentially distributed fingers which are configured to flex outwards when a ramp portion of length LRAMP of each of the respective fingers is forced against the expansion feature during installation of the undercut anchor. The fingers each having a length LFINGER and a distance therebetween of WSLOT.
Claims4
An undercut anchor comprising:
- an at least partially threaded rod portion having an outer thread diameter DROD;
- an expansion feature coupled to the rod portion;
- an expansion sleeve having an outer diameter DOUTER SLEEVE, an inner diameter DINNER SLEEVE and a wall thickness TSLEEVE wherein the expansion sleeve has a plurality of circumferentially distributed fingers which are configured to flex outwards when a ramp portion of length LRAMP of each of the respective fingers is forced against the expansion feature during installation of the undercut anchor, the fingers each having a length LFINGER and a distance therebetween of WSLOT;
- wherein the undercut anchor is configured according to at least one of the following:
- the ratio of DOUTER SLEEVE to DROD is between 1.50 to 2.00;
- the ratio of DINNER SLEEVE to DROD is between 1.00 to 1.15;
- the ratio of TSLEEVE to DROD is between 0.25 to 0.50;
- the ratio of LFINGER to DROD is between 1.00 to 1.50;
- the ratio of LRAMP to DROD is between 0.15 to 0.30;
- the ratio of WSLOT to DROD is between 0.05 to 0.20, and wherein the plurality of circumferentially distributed fingers are flexed outward to form an expansion angle between about 37° to about 43°, the undercut anchor configured to the following dimensions:
- DROD (Inches)
- 0.375
- DOUTER SLEEVE (Inches)
- 0.6875
- DINNER SLEEVE (Inches)
- 0.405
- TSLEEVE (Inches)
- 0.14125
- LFINGER (Inches)
- 0.495
- LRAMP (Inches)
- 0.075
- WSLOT (Inches)
- 0.055.
21 more elements
An undercut anchor comprising:
- an at least partially threaded rod portion having an outer thread diameter DROD;
- an expansion feature coupled to the rod portion;
- an expansion sleeve having an outer diameter DOUTER SLEEVE, an inner diameter DINNER SLEEVE and a wall thickness TSLEEVE wherein the expansion sleeve has a plurality of circumferentially distributed fingers which are configured to flex outwards when a ramp portion of length LRAMP of each of the respective fingers is forced against the expansion feature during installation of the undercut anchor, the fingers each having a length LFINGER and a distance therebetween of WSLOT;
- wherein the undercut anchor is configured according to at least one of the following:
- the ratio of DOUTER SLEEVE to DROD is between 1.50 to 2.00;
- the ratio of DINNER SLEEVE to DROD is between 1.00 to 1.15;
- the ratio of TSLEEVE to DROD is between 0.25 to 0.50;
- the ratio of LFINGER to DROD is between 1.00 to 1.50;
- the ratio of LRAMP to DROD is between 0.15 to 0.30;
- the ratio of WSLOT to DROD is between 0.05 to 0.20, and wherein the plurality of circumferentially distributed fingers are flexed outward to form an expansion angle between about 37° to about 43°, the undercut anchor configured to the following dimensions:
- DROD (Inches)
- 0.5
- DOUTER SLEEVE (Inches)
- 0.8125
- DINNER SLEEVE (Inches)
- 0.535
- TSLEEVE (Inches)
- 0.13875
- LFINGER (Inches)
- 0.532
- LRAMP (Inches)
- 0.112
- WSLOT (Inches)
- 0.055.
21 more elements
An undercut anchor comprising:
- an at least partially threaded rod portion having an outer thread diameter DROD;
- an expansion feature coupled to the rod portion;
- an expansion sleeve having an outer diameter DOUTER SLEEVE, an inner diameter DINNER SLEEVE and a wall thickness TSLEEVE wherein the expansion sleeve has a plurality of circumferentially distributed fingers which are configured to flex outwards when a ramp portion of length LRAMP of each of the respective fingers is forced against the expansion feature during installation of the undercut anchor, the fingers each having a length LFINGER and a distance therebetween of WSLOT;
- wherein the undercut anchor is configured according to at least one of the following:
- the ratio of DOUTER SLEEVE to DROD is between 1.50 to 2.00;
- the ratio of DINNER SLEEVE to DROD is between 1.00 to 1.15;
- the ratio of TSLEEVE to DROD is between 0.25 to 0.50;
- the ratio of LFINGER to DROD is between 1.00 to 1.50;
- the ratio of LRAMP to DROD is between 0.15 to 0.30;
- the ratio of WSLOT to DROD is between 0.05 to 0.20, and wherein the plurality of circumferentially distributed fingers are flexed outward to form an expansion angle between about 37° to about 43°, the undercut anchor configured to the following dimensions:
- DROD (Inches)
- 0.625
- DOUTER SLEEVE (Inches)
- 1
- DINNER SLEEVE (Inches)
- 0.665
- TSLEEVE (Inches)
- 0.1675
- LFINGER (Inches)
- 0.661
- LRAMP (Inches)
- 0.149
- WSLOT (Inches)
- 0.055.
21 more elements
An undercut anchor comprising:
- an at least partially threaded rod portion having an outer thread diameter DROD;
- an expansion feature coupled to the rod portion;
- an expansion sleeve having an outer diameter DOUTER SLEEVE, an inner diameter DINNER SLEEVE and a wall thickness TSLEEVE wherein the expansion sleeve has a plurality of circumferentially distributed fingers which are configured to flex outwards when a ramp portion of length LRAMP of each of the respective fingers is forced against the expansion feature during installation of the undercut anchor, the fingers each having a length LFINGER and a distance therebetween of WSLOT;
- wherein the undercut anchor is configured according to at least one of the following:
- the ratio of DOUTER SLEEVE to DROD is between 1.50 to 2.00;
- the ratio of DINNER SLEEVE to DROD is between 1.00 to 1.15;
- the ratio of TSLEEVE to DROD is between 0.25 to 0.50;
- the ratio of LFINGER to DROD is between 1.00 to 1.50;
- the ratio of LRAMP to DROD is between 0.15 to 0.30;
- the ratio of WSLOT to DROD is between 0.05 to 0.20, and wherein the plurality of circumferentially distributed fingers are flexed outward to form an expansion angle between about 37° to about 43°, the undercut anchor configured to the following dimensions:
- DROD (Inches)
- 0.75
- DOUTER SLEEVE (Inches)
- 1.25
- DINNER SLEEVE (Inches)
- 0.79
- TSLEEVE (Inches)
- 0.23
- LFINGER (Inches)
- 0.881
- LRAMP (Inches)
- 0.187
- WSLOT (Inches)
- 0.055.
21 more elements
Dependencies are inferred from the claim text.