Title of Invention	BOLT CAPABLE OF BEING PRESSED INTO A METAL SHEET IN A TORSION-PROOF AND EJECTION-PROOF MANNER
Abstract	Disclosed is a bolt (10) that can be pressed into a metal sheet in a torsion-proof and ejection-proof manner and comprises a head (12). The side of the head (12) facing the metal sheet after being inserted is provided with radially arranged webs (22) which are pressed in when being inserted into the metal sheet. A cylindrical winding support (14) is disposed in the center of the head (12). Said winding support (14) extends through the metal sheet and protrudes on the other side thereof while being provided with a circumferential annular groove (20) near the side of the head (12) that faces the metal sheet in the set state. The sheet metal material that is displaced during the setting process can be pressed into said annular groove (20). All or part of the side of the head (12) facing the metal sheet is provided with a rubber-elastic sealing material (110).

Title of Invention

BOLT CAPABLE OF BEING PRESSED INTO A METAL SHEET IN A TORSION-PROOF AND EJECTION-PROOF MANNER

Abstract

Disclosed is a bolt (10) that can be pressed into a metal sheet in a torsion-proof and ejection-proof manner and comprises a head (12). The side of the head (12) facing the metal sheet after being inserted is provided with radially arranged webs (22) which are pressed in when being inserted into the metal sheet. A cylindrical winding support (14) is disposed in the center of the head (12). Said winding support (14) extends through the metal sheet and protrudes on the other side thereof while being provided with a circumferential annular groove (20) near the side of the head (12) that faces the metal sheet in the set state. The sheet metal material that is displaced during the setting process can be pressed into said annular groove (20). All or part of the side of the head (12) facing the metal sheet is provided with a rubber-elastic sealing material (110).

Full Text	1 Bolt that can be pressed into a metal sheet in a torsion-proof and ejection-proof manner. The present invention relates to a bolt that can be pressed into a metal sheet in a torsion-proof and ejection-proof manner according to DE-Gbm 200 12 097 Ul. Since during the setting of bolts according to this reference, on the one hand, is accompanied by a flowing of the material of the metal sheet, on the other hand, however, a sealing only is consisting of a steel-steel material pairing, the connection between the bolt and the metal sheet according to the prior art is not safely tight against liquid or even gases. It is therefore the task to be solved by the present invention to improve such a bolt in such a way that after the setting it is positioned in a fluid- and gas-tight manner. In this way, according to the invention, for the first time, such a bolt that can be pressed-in could be used in cases where it is necessary that the bolt after the setting is absolutely liquid-tight and gas-tight. Until now to this end only commercial screws could be used which therefore however in a expensive way singularly had to be welded, wherein during the welding, too, a substantial expenditure with respect to inspection was necessary to ensure that the welding always was gas-tight. Therefore this method was extremely complicated and cost-intensive. "According to 2 the invention, this method in a far more simple way can be performed by pressing-in a bolt according to the invention. The above-defined task therefore is solved by means of a bolt according to the preamble of the enclosed claim 1, wherein the side of the head facing the metal sheet is provided with a rubber-elastic sealing material. Preferred embodiments can be learned from the enclosed sub-claims, wherein it is especially preferred that the webs themselves are free from the sealing material since in this way a decreasing of the safety against torsion and ejection of the bolt by the covering with the sealing material is avoided. In the same way, this can be prevented by the sealing material being provided exclusively in the region of the outer rim of the head facing the metal sheet. In the same way, this further problem can be avoided by the fact that the sealing material exclusively is positioned in an annular groove in the head which is positioned outwardly of the radial extension of the webs but within the outer edge of the head facing the metal sheet. The present invention, in the following, is more detailly de-scribed with respect to the exemplary embodiments shown in the drawings. In the drawings show: FIGURE 1 a bolt according to the invention with a coating of the entire head except the webs in a lateral cross-sectional view; 3 FIGURE 2 the head of the bolt according to Figure 1 from be-low; FIGURE 3 a bolt according to the invention with the sealing material in the region of the outer edge of the head in a lateral cross-sectional view; FIGURE 4 the bolt of the head according to Figure 3 from below; FIGURE 5 a further bolt according to the invention in a lateral cross-sectional view; and FIGURE 6 the head of the bolt according to Figure 5 from be-low. As shown in Figure 1, a bolt 10 according to the invention is consisting of a disk-shaped head 12 and a connected cylindrical winding support 14 having an exterior thread. Between the thread and the head 12, in the following order a calibration collar 16, an annular projection 18 and an annular groove 20 having a semi-circular cross-section are provided. On the bottom side of the head 12, which is facing during the setting of the fastener the metal sheet, there are provided radially .extending webs 22 having a radial extension in a basically uniform height and which merely in their radially exterior area 21 are flattened. The head 12 is shown partly in cross-section, wherein on the right hand side the corresponding web 22 is shown in cross-section, too, while the corresponding web 22 on the left hand side is shown in a side view. 4 According to the invention, such a bolt can be set in a metal sheet in a fluid- and gas-tight manner by coating the head with a rubber-elastic sealing material. The coating can be performed in the most simple way by immersion, wherein the corresponding coating can be extended up to the calibration collar 16. As a coating material in this case preferably ep-oxy resin is used, for example the product Rimlex® of the ANOCHROME-Group, Great Britain, which can be applied in a liquid state which later is forming a solid elastic sealing material. In such a case, the safety with respect to torsion and ejection of the bolt can be impaired slightly. The coating 110 shown in Figure 1 therefore is extending only onto the head itself, wherein the webs 22 are kept free from the coating. This, on the one hand, is more difficult to be produced compared with the above-disclosed simple solution according to the invention, on the other hand, is providing for higher mechanical load values of the set bolt. Figure 2 is showing the head 12 of the bolt according to Figure 1 from below. Because of the interrupted cross-hatching, the area provided with the sealing material 110 of the head 12 visible from below clearly can be seen. Equally clearly it can be seen that the webs 22 including their bevels 21 are not covered by the rubber-elastic sealing material. Figure 3 is showing a further embodiment of the bolt according to the invention. Same reference numerals are characterising here the same constituents as in Figures 1 and 2 and the corresponding description here is not again repeated. With respect to the bolt showing in Figure 3 according to the invention in the region of the outer edge of the head 12 fac-ing the metal sheet a circumferential recess is provided be-ing filled with the rubber-elastic sealing material 120. Al- 5 ternatively a corresponding sealing ring of polyurethane, polyamide, polytetrafluorethylene or polyolefins can be in-serted into the recess. This solution has the advantage that the mechanical properties of the set bolt are not at all in-fluenced by the sealing material. Figure 4 is showing the head of the bolt of Figure 3 from be-low, wherein the position of the annulus 120 of the rubber-elastic sealing material again clearly can be learned. Figure 5 is showing a further embodiment of the bolt accord-ing to the invention. Here the head 12 is having a slightly larger diameter and radially outwardly of the webs 22 an annular groove 134 is provided in the head 12 which therefore is extending within the outer edge 132 of the head 12 facing the metal sheet. This groove 134 is filled with the sealing material 130 or a corresponding sealing ring of polyurethane, polyamide, polytetrafluorethylene or polyolefins is inserted in the groove 134. Figure 6 is showing the head of the bolt of Figure 5 from be-low. Here again the extension of the annular groove 134 is obvious. As a rubber-elastic sealing material 110, 120, 130 here pref-erably when coating the head epoxy resin is used, wherein in connection with the solutions according to Figures 3 or 5 preferably polyurethane, polyamide, polytetrafluorethylene or a mixture of polyolefins is used. 6 CLAIMS 1. Bolt (10) that can be pressed into a metal sheet in a tor sion-proof and ejection-proof manner having a head (12) the side of which facing the metal sheet in the set state is hav ing radially extending webs (22) which during the setting are impressed into the metal sheet, wherein in the centre of the head a cylindrical winding support (14) is positioned which is extending through the metal sheet and protrudes on the other side thereof and which is having in vicinity of the side of the head (12) facing the metal sheet a circumferen tial annular groove (20) into which the sheet metal material that is displaced during the setting process can be pressed, characterised in that the side of the head (12) facing the metal sheet completely or partly is provided with a rubber- elastic sealing material (110; 120; 130). 2. Bolt according to claim 1, characterised in that the webs (22) basically are having a rectangular cross-section with their side walls (24) extending perpendicular to the side of the head (12) facing the metal sheet. 3. Bolt according to claim 1 or 2, characterised in that the webs (22) in their radially exterior region are tapering off flatly. 4. Bolt according to any of the claims 1 to 3, characterised in that the webs (22) in their radially exterior region (21) are tapering off laterally rounded. 7 5. Bolt adcording to any of the claims 1 to 4, characterised in that it can be pressed into metal sheets with holes with out special additional shapes as collars or the like. 6. Bolt according to any of the claims 1 to 5, characterised in that merely the area outwardly of the webs (22) are pro vided with the rubber-elastic sealing material (110) while the webs (22) themselves are free from the sealing material (110). 7. Bolt according to any of the claims 1 to 5, characterised in that the sealing material (120) exclusively is provided in the region of the outer edge of the head (12) facing the metal sheet. 8. Bolt according to any of the claims 1 to 5, characterised in that the sealing material (130) exclusively is provided in an annular groove (134) in the head (12) which is positioned outwardly of the radial extension of the webs (22) but within the outer edge (132) of the head (12) facing the metal sheet. 9. Bolt according to any of the preceding claims, character ised in that the sealing material (110; 120; 130) is consist ing of polyurethane, polyamide, polyolefins, polytetrafluore- thylene or epoxy resin.

Full Text

1
Bolt that can be pressed into a metal sheet in a torsion-proof and ejection-proof manner.
The present invention relates to a bolt that can be pressed into a metal sheet in a torsion-proof and ejection-proof manner according to DE-Gbm 200 12 097 Ul.
Since during the setting of bolts according to this reference, on the one hand, is accompanied by a flowing of the material of the metal sheet, on the other hand, however, a sealing only is consisting of a steel-steel material pairing, the connection between the bolt and the metal sheet according to the prior art is not safely tight against liquid or even gases.
It is therefore the task to be solved by the present invention to improve such a bolt in such a way that after the setting it is positioned in a fluid- and gas-tight manner.
In this way, according to the invention, for the first time, such a bolt that can be pressed-in could be used in cases where it is necessary that the bolt after the setting is absolutely liquid-tight and gas-tight.
Until now to this end only commercial screws could be used which therefore however in a expensive way singularly had to be welded, wherein during the welding, too, a substantial expenditure with respect to inspection was necessary to ensure that the welding always was gas-tight. Therefore this method was extremely complicated and cost-intensive. "According to

2
the invention, this method in a far more simple way can be performed by pressing-in a bolt according to the invention.
The above-defined task therefore is solved by means of a bolt according to the preamble of the enclosed claim 1, wherein the side of the head facing the metal sheet is provided with a rubber-elastic sealing material.
Preferred embodiments can be learned from the enclosed sub-claims, wherein it is especially preferred that the webs themselves are free from the sealing material since in this way a decreasing of the safety against torsion and ejection of the bolt by the covering with the sealing material is avoided.
In the same way, this can be prevented by the sealing material being provided exclusively in the region of the outer rim of the head facing the metal sheet.
In the same way, this further problem can be avoided by the fact that the sealing material exclusively is positioned in an annular groove in the head which is positioned outwardly of the radial extension of the webs but within the outer edge of the head facing the metal sheet.
The present invention, in the following, is more detailly de-scribed with respect to the exemplary embodiments shown in the drawings. In the drawings show:
FIGURE 1 a bolt according to the invention with a coating of the entire head except the webs in a lateral cross-sectional view;

3
FIGURE 2 the head of the bolt according to Figure 1 from be-low;
FIGURE 3 a bolt according to the invention with the sealing material in the region of the outer edge of the head in a lateral cross-sectional view;
FIGURE 4 the bolt of the head according to Figure 3 from below;
FIGURE 5 a further bolt according to the invention in a lateral cross-sectional view; and
FIGURE 6 the head of the bolt according to Figure 5 from be-low.
As shown in Figure 1, a bolt 10 according to the invention is consisting of a disk-shaped head 12 and a connected cylindrical winding support 14 having an exterior thread.
Between the thread and the head 12, in the following order a calibration collar 16, an annular projection 18 and an annular groove 20 having a semi-circular cross-section are provided. On the bottom side of the head 12, which is facing during the setting of the fastener the metal sheet, there are provided radially .extending webs 22 having a radial extension in a basically uniform height and which merely in their radially exterior area 21 are flattened.
The head 12 is shown partly in cross-section, wherein on the right hand side the corresponding web 22 is shown in cross-section, too, while the corresponding web 22 on the left hand side is shown in a side view.

4
According to the invention, such a bolt can be set in a metal sheet in a fluid- and gas-tight manner by coating the head with a rubber-elastic sealing material. The coating can be performed in the most simple way by immersion, wherein the corresponding coating can be extended up to the calibration collar 16. As a coating material in this case preferably ep-oxy resin is used, for example the product Rimlex® of the ANOCHROME-Group, Great Britain, which can be applied in a liquid state which later is forming a solid elastic sealing material. In such a case, the safety with respect to torsion and ejection of the bolt can be impaired slightly. The coating 110 shown in Figure 1 therefore is extending only onto the head itself, wherein the webs 22 are kept free from the coating. This, on the one hand, is more difficult to be produced compared with the above-disclosed simple solution according to the invention, on the other hand, is providing for higher mechanical load values of the set bolt.
Figure 2 is showing the head 12 of the bolt according to Figure 1 from below. Because of the interrupted cross-hatching, the area provided with the sealing material 110 of the head 12 visible from below clearly can be seen. Equally clearly it can be seen that the webs 22 including their bevels 21 are not covered by the rubber-elastic sealing material.
Figure 3 is showing a further embodiment of the bolt according to the invention. Same reference numerals are characterising here the same constituents as in Figures 1 and 2 and the corresponding description here is not again repeated.
With respect to the bolt showing in Figure 3 according to the invention in the region of the outer edge of the head 12 fac-ing the metal sheet a circumferential recess is provided be-ing filled with the rubber-elastic sealing material 120. Al-

5
ternatively a corresponding sealing ring of polyurethane, polyamide, polytetrafluorethylene or polyolefins can be in-serted into the recess. This solution has the advantage that the mechanical properties of the set bolt are not at all in-fluenced by the sealing material.
Figure 4 is showing the head of the bolt of Figure 3 from be-low, wherein the position of the annulus 120 of the rubber-elastic sealing material again clearly can be learned.
Figure 5 is showing a further embodiment of the bolt accord-ing to the invention. Here the head 12 is having a slightly larger diameter and radially outwardly of the webs 22 an annular groove 134 is provided in the head 12 which therefore is extending within the outer edge 132 of the head 12 facing the metal sheet. This groove 134 is filled with the sealing material 130 or a corresponding sealing ring of polyurethane, polyamide, polytetrafluorethylene or polyolefins is inserted in the groove 134.
Figure 6 is showing the head of the bolt of Figure 5 from be-low. Here again the extension of the annular groove 134 is obvious.
As a rubber-elastic sealing material 110, 120, 130 here pref-erably when coating the head epoxy resin is used, wherein in connection with the solutions according to Figures 3 or 5 preferably polyurethane, polyamide, polytetrafluorethylene or a mixture of polyolefins is used.

6
CLAIMS
1. Bolt (10) that can be pressed into a metal sheet in a tor
sion-proof and ejection-proof manner having a head (12) the
side of which facing the metal sheet in the set state is hav
ing radially extending webs (22) which during the setting are
impressed into the metal sheet, wherein in the centre of the
head a cylindrical winding support (14) is positioned which
is extending through the metal sheet and protrudes on the
other side thereof and which is having in vicinity of the
side of the head (12) facing the metal sheet a circumferen
tial annular groove (20) into which the sheet metal material
that is displaced during the setting process can be pressed,
characterised in that the side of the head (12) facing the
metal sheet completely or partly is provided with a rubber-
elastic sealing material (110; 120; 130).
2. Bolt according to claim 1, characterised in that the webs
(22) basically are having a rectangular cross-section with
their side walls (24) extending perpendicular to the side of
the head (12) facing the metal sheet.
3. Bolt according to claim 1 or 2, characterised in that the
webs (22) in their radially exterior region are tapering off
flatly.
4. Bolt according to any of the claims 1 to 3, characterised
in that the webs (22) in their radially exterior region (21)
are tapering off laterally rounded.

7
5. Bolt adcording to any of the claims 1 to 4, characterised
in that it can be pressed into metal sheets with holes with
out special additional shapes as collars or the like.
6. Bolt according to any of the claims 1 to 5, characterised
in that merely the area outwardly of the webs (22) are pro
vided with the rubber-elastic sealing material (110) while
the webs (22) themselves are free from the sealing material
(110).
7. Bolt according to any of the claims 1 to 5, characterised
in that the sealing material (120) exclusively is provided in
the region of the outer edge of the head (12) facing the
metal sheet.
8. Bolt according to any of the claims 1 to 5, characterised
in that the sealing material (130) exclusively is provided in
an annular groove (134) in the head (12) which is positioned
outwardly of the radial extension of the webs (22) but within
the outer edge (132) of the head (12) facing the metal sheet.
9. Bolt according to any of the preceding claims, character
ised in that the sealing material (110; 120; 130) is consist
ing of polyurethane, polyamide, polyolefins, polytetrafluore-
thylene or epoxy resin.

Documents:

01568-kolnp-2006 assignment-1.1.pdf

01568-kolnp-2006 correspondence others-1.1.pdf

01568-kolnp-2006 priority document-1.1.pdf

01568-kolnp-2006-abstract.pdf

01568-kolnp-2006-assignment.pdf

01568-kolnp-2006-claims.pdf

01568-kolnp-2006-correspondence others.pdf

01568-kolnp-2006-correspondence-1.2.pdf

01568-kolnp-2006-description complete.pdf

01568-kolnp-2006-drawings.pdf

01568-kolnp-2006-form 1.pdf

01568-kolnp-2006-form 3.pdf

01568-kolnp-2006-form 5.pdf

01568-kolnp-2006-form-18.pdf

01568-kolnp-2006-international publication.pdf

01568-kolnp-2006-international search authority report.pdf

01568-kolnp-2006-priority document.pdf

1568-KOLNP-2006-(11-12-2012)-CORRESPONDENCE.pdf

1568-KOLNP-2006-(29-05-2012)-AMANDED CLAIMS.pdf

1568-KOLNP-2006-(29-05-2012)-DESCRIPTION (COMPLETE).pdf

1568-KOLNP-2006-(29-05-2012)-DRAWINGS.pdf

1568-KOLNP-2006-(29-05-2012)-EXAMINATION REPORT REPLY RECEIVED.pdf

1568-KOLNP-2006-(29-05-2012)-FORM-1.pdf

1568-KOLNP-2006-(29-05-2012)-FORM-2.pdf

1568-KOLNP-2006-(29-05-2012)-FORM-3.pdf

1568-KOLNP-2006-(29-05-2012)-OTHERS.pdf

1568-KOLNP-2006-(29-05-2012)-PETITION UNDER RULE 137.pdf

1568-KOLNP-2006-ASSIGNMENT 1.1.pdf

1568-KOLNP-2006-FORM 1-1.1.pdf

1568-KOLNP-2006-FORM 13.pdf

1568-KOLNP-2006-FORM 3-1.1.pdf

1568-KOLNP-2006-FORM 5-1.1.pdf

1568-KOLNP-2006-PA.pdf

1568-KOLNP-2006-REPLY TO EXAMINATION REPORT.pdf

abstract-01568-kolnp-2006.jpg

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Patent Number

256091

Indian Patent Application Number

1568/KOLNP/2006

PG Journal Number

18/2013

Publication Date

03-May-2013

Grant Date

30-Apr-2013

Date of Filing

07-Jun-2006

Name of Patentee

ACUMENT GMBH & CO. OHG

Applicant Address

AUGUSTENTHALERSTRASSE 87, 56567, NEUWIED

Inventors:

#	Inventor's Name	Inventor's Address
1	SCHRAER, THORSTEN	LANGENFELDER WEG 3, 32657, LEMGO

PCT International Classification Number

F16B 33/00;F16B35/04

PCT International Application Number

PCT/DE2005/000032

PCT International Filing date

2005-01-12

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	20-2004-000-463.1	2004-01-13	Germany