Patent US1806973A successfully refreshed from Google Patents.
US6205639B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making a building board
Assignee: Valinge Innovation AB
•
Filing: 1999-06-02
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Granted: 2001-03-27
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Expires: 2019-06-02
Abstract
Abstract The invention relates to a method for making a building board 2, exhibiting a board body S which is formed with a gripping stud 24, and a metal strip 10 which extends from the body S and from which are formed gripping elements 26, 28 which are bent round the gripping stud 24 for mechanical fastening of the strip 10 TO the body S, as well as locking element 12 for enabling mechanical joining of the board 2 to similar boards. The method is characterized by preforming the gripping elements 26, 28 of the strip 10 prior to bending them round the gripping stud 24, and subsequently bending the preformed gripping elements 26, 28 round the gripping stud 24, the preforming being such that, as a result of the bending, the preformed gripping elements 26, 28 strike against the gripping stud 24 and thereby undergo a deformation in the opposite direction to the preforming during a final stage of the bending.
Inventors
- 👤 Darko Pervan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:54
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/02; E04F15/04; B; B23; B23P; B23P11/00; E04F2201/00; E04F2201/01; E04F2201/0107; E04F2201/0115; E04F2201/0153; E04F2201/04; E04F2201/042; E04F2201/05; E04F2201/0517; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
150 words
A method for making a building board, said building board including: a board body in which a gripping stud is formed, and a metal strip which extends from said board body, the metal strip including gripping elements which are bent around the gripping stud for mechanical fastening of the metal strip to the board body, as well as a locking element to enable mechanical joining of said board to similar boards, said method comprising the following steps: preforming the gripping elements of the metal strip prior to bending the gripping elements around the gripping stud, and subsequently bending the preformed gripping elements around the gripping stud in a bending step, the preforming being such that, as a result of the bending, the preformed gripping elements strike against the gripping stud and thereby undergo a deformation in an opposite direction to the preforming during a final stage of the bending step.
Claim 2
Independent Claim
150 words
A method for making a building board, said building board including: a board body in which a gripping stud is formed, and a metal strip which extends from said board body, the metal strip including gripping elements which are bent around the gripping stud for mechanical fastening of the metal strip to the board body, as well as a locking element to enable mechanical joining of said board to similar boards, said method comprising the following steps: preforming the gripping elements of the metal strip prior to bending the gripping elements around the gripping stud, and subsequently bending the preformed gripping elements around the gripping stud in a bending step, the preforming being such that, as a result of the bending, the preformed gripping elements strike against the gripping stud and thereby undergo a deformation in an opposite direction to the preforming during a final stage of the bending step.
Claim 3
Dependent Claim
36 words
The method as claimed in claim 1 , wherein said deformation that occurs during said final stage of the bending step results in a biasing of the gripping elements of the strip against the gripping stud.
Claim 4
Dependent Claim
17 words
The method as claimed in claim 2 , wherein the strip is made of a resilient material.
Claim 5
Dependent Claim
17 words
The method as claimed in claim 1 , wherein the strip is made of a resilient material.
Claim 6
Dependent Claim
39 words
The method as claimed in claim 1 , wherein the step of bending of the gripping elements is carried out with the aid of punching means operating essentially at right angles to a principal plane of the building board.
Claim 7
Dependent Claim
51 words
The method as claimed in claim 5 , wherein said punching means for carrying out the preforming step and said punching means for carrying out the bending step are arranged in one and the same punching tool and are stationary in relation to each other during the preforming and bending steps.
Claim 8
Dependent Claim
40 words
The method as claimed in claim 1 , wherein the step of preforming the gripping elements of the strip is carried out with the aid of punching means operating essentially at right angles to a principal plane of the strip.
Claim 9
Dependent Claim
51 words
The method as claimed in claim 7 , wherein said punching means for carrying out the preforming step and said punching means for carrying out the bending step are arranged in one and the same punching tool and are stationary in relation to each other during the preforming and bending steps.
Claim 10
Dependent Claim
37 words
The method as claimed in claim 1 , wherein said deformation that occurs during the final state of the bending step consists of a permanent reverse bending as well as a resilient return of the gripping elements.
Claim 11
Dependent Claim
45 words
The method as claimed in claim 1 , said gripping stud presenting a positional tolerance range, wherein the gripping elements are preformed to an extent which is so adjusted to said positional tolerance range that said biasing is obtained over the entire positional tolerance range.
Claim 12
Dependent Claim
19 words
The method as claimed in claim 1 , wherein the gripping stud is provided with undercut gripping edge parts.
Claim 13
Dependent Claim
37 words
The method as claimed in claim 11 , wherein the undercut gripping edge parts of the gripping stud exhibit an undercutting angle of 10°-45° in relation to a normal to a principal plane of the building board.
Claim 14
Dependent Claim
32 words
The method as claimed in claim 1 , wherein the gripping stud is provided with nonundercut gripping edge parts closest to the strip as well as undercut gripping edge parts adjacent thereto.
Claim 15
Dependent Claim
37 words
The method as claimed in claim 13 , wherein the undercut gripping edge parts of the gripping stud exhibit an undercutting angle of 10°-45° in relation to a normal to a principal plane of the building board.
Claim 16
Dependent Claim
35 words
The method as claimed in claim 1 , wherein the gripping elements of the strip are preformed during said preforming step to a preforming angle of 15°-90° relative to a principal plane of the strip.
Claim 17
Dependent Claim
66 words
The method as claimed in claim 1 , wherein the gripping stud is provided with undercut gripping edge parts exhibiting an undercutting angle in relation to a normal to a principal plane of the building board, and wherein the gripping elements are preformed during said preforming step through a preforming angle relative to a principal plane of the strip which is greater than said undercutting angle.
Claim 18
Dependent Claim
68 words
The method as claimed in claim 1 , wherein the preforming step is performed by pre-bending each gripping element through a predetermined pre-bending angle at a first point spaced from a free end of the gripping element, and wherein the bending step is performed by bending the gripping element thus preformed around a second point, which is located farther away from said free end than the first point.
Claim 19
Dependent Claim
25 words
The method as claimed in claim 17 , wherein said second point, around which the bending is carried out, is defined by the gripping stud.
Claim 20
Dependent Claim
43 words
The method as claimed in claim 1 , wherein the strip is first moved to a first punch position where the preforming step is carried out, and subsequently is moved to a second punch position in which the bending step is carried out.
Claim 21
Dependent Claim
25 words
The method as claimed in claim 1 , wherein the strip and the body are not moved together until after the preforming step is completed.
References Cited (Backward Citations)
DE7102476U
Cited
DE7402354U
Cited
BE417526A
Cited
US1988201A
Cited
US1986739A
Cited
US2276071A
Cited
CH211877A
Cited
US3045294A
Cited
DE1212275B
Cited
US3267630A
Cited
US3310919A
Cited
GB1127915A
Cited
US3387422A
Cited
US3526420A
Cited
GB1237744A
Cited
US3694983A
Cited
US3759007A
Cited
US3859000A
Cited
DE2238660A1
Cited
NL7601773A
Cited
US4169688A
Cited
DE2616077A1
Cited
JPS5465528A
Cited
US4426820A
Cited
DE2917025A1
Cited
US4501102A
Cited
JPS57119056A
Cited
GB2117813A
Cited
FI843060L
Cited
WO1984002155A1
Cited
SE450141B
Cited
DE3246376A1
Cited
US4738071A
Cited
DE3343601A1
Cited
EP0248127A1
Cited
US4641469A
Cited
DE8604004U1
Cited
US4819932A
Cited
US4769963A
Cited
US4769963B1
Cited
FR2630149A1
Cited
US5029425A
Cited
JPH03169967A
Cited
US5216861A
Cited
GB2243381A
Cited
FR2675174A1
Cited
US5179812A
Cited
GB2256023A
Cited
JPH05148984A
Cited
US5349796A
Cited
WO1993013280A1
Cited
DE4215273A1
Cited
FR2691491A1
Cited
US5295341A
Cited
FR2697275A1
Cited
WO1994026999A1
Cited
US5706621A
Cited
US5860267A
Cited
US5630304A
Cited
US5768850A
Cited
US5797237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-03-26 | 2004-09-25 | 2005-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-26 | 2008-09-25 | 2009-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-26 | 2012-09-25 | 2013-03-27 | $7700.00 | Window Closed / Lapsed |