Patent US3728779A successfully refreshed from Google Patents.
US3728779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining strip material
Assignee: Behlen Manufacturing Co Inc
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Filing: 1970-11-23
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Granted: 1973-04-24
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Expires: 1990-11-23
Abstract
Abstract The method of bonding a pair of strips of material together, comprising, simultaneously deforming a portion of material out of each of the sheets and then longitudinally moving the sheets with respect to each other whereby the deformed portions will interlock to bond the sheets together. The joint formed by deforming the sheets effectively bonds the two sheets together thereby preventing any separation thereof.
Inventors
- 👤 W Behlen
- 👤 A Hilger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:33
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/03; B21D39/035; F; F16; F16B; F16B5/00; F16B5/07; Y; Y10; Y10T; Y10T29/00; Y10T29/34; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49908; Y10T29/49915; Y10T29/49936; Y10T403/00; Y10T403/49; Y10T403/4991
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
246 words
The method of bonding a pair of sheets of material together, comprising, simultaneously shearing and deforming a portion of material out of each of a pair of stacked sheets, said sheared and deformed portion each including opposite sides which are parallel to the longitudinal axis of the sheets, one of said sides having a tab portion extending therefrom, the other of said sides having a notch formed therein, a tab portion being formed in each of said sheets immediately adjacent said notch, and a notch being formed in said sheets immediately adjacent said tab portions in said sheared and deformed portions, said notches being defined by opposite shoulders having a side edge extending therebetween, said tab portions being defined by opposite shoulders having a side edge extending therebetween, said shoulders being transversely disposed to the longitudinal axis of the sheets, and longitudinally moving said sheets with respect to each other to cause said sheared and deformed portions to interlock and to bond said sheets together, said sheets being interlocked by means of the shoulders of one of the tab portions of the sheared and deformed portions on one of said sheets being moved longitudinally over the shoulders of the notch in the other of said sheets, and by means of the shoulders of one of the tab portions on said one of said sheet members being moved longitudinally under the shoulders of the notch in the sheared and deformed portion of the other of said sheets.
Claim 2
Independent Claim
246 words
The method of bonding a pair of sheets of material together, comprising, simultaneously shearing and deforming a portion of material out of each of a pair of stacked sheets, said sheared and deformed portion each including opposite sides which are parallel to the longitudinal axis of the sheets, one of said sides having a tab portion extending therefrom, the other of said sides having a notch formed therein, a tab portion being formed in each of said sheets immediately adjacent said notch, and a notch being formed in said sheets immediately adjacent said tab portions in said sheared and deformed portions, said notches being defined by opposite shoulders having a side edge extending therebetween, said tab portions being defined by opposite shoulders having a side edge extending therebetween, said shoulders being transversely disposed to the longitudinal axis of the sheets, and longitudinally moving said sheets with respect to each other to cause said sheared and deformed portions to interlock and to bond said sheets together, said sheets being interlocked by means of the shoulders of one of the tab portions of the sheared and deformed portions on one of said sheets being moved longitudinally over the shoulders of the notch in the other of said sheets, and by means of the shoulders of one of the tab portions on said one of said sheet members being moved longitudinally under the shoulders of the notch in the sheared and deformed portion of the other of said sheets.
Claim 3
Dependent Claim
32 words
The method of claim 1 wherein said deformed portions have a portion thereof extending upwardly from said sheets, at least some of said tab portions and notches being spaced above said sheets.
Claim 4
Independent Claim
214 words
The method of bonding a pair of sheets of material together, comprising the steps of: simultaneously providing individual, generally longitudinal slits in each of a pair of stacked sheets and simultaneously deforming a portion of material on one lateral side of each slit out of the plane of a portion of material on the laterally opposite side of said slit, the slits in one of said sheets being aligned with the slits in the other of said sheets; each slit including, a pair of longitudinally spaced slit portions which are parallel to the longitudinal axis of the sheets, and an intermediate slit portion joining said longitudinally spaced slit portions to define a laterally projecting tab in one of said portions of material and a complemental, laterally projecting notch in the other of said portions of material, the tabs and notches in one of said sheets being aligned with the tabs and notches in the other of said sheets, each intermediate slit portion including longitudinally spaced, slit sections extending laterally of said axis; and longitudinally moving at least one of Said sheets with respect to the other to cause the tabs and notches on said one sheet to be longitudinally disaligned with the tabs and notches of said other sheet to interlock said sheets together.
Claim 5
Independent Claim
214 words
The method of bonding a pair of sheets of material together, comprising the steps of: simultaneously providing individual, generally longitudinal slits in each of a pair of stacked sheets and simultaneously deforming a portion of material on one lateral side of each slit out of the plane of a portion of material on the laterally opposite side of said slit, the slits in one of said sheets being aligned with the slits in the other of said sheets; each slit including, a pair of longitudinally spaced slit portions which are parallel to the longitudinal axis of the sheets, and an intermediate slit portion joining said longitudinally spaced slit portions to define a laterally projecting tab in one of said portions of material and a complemental, laterally projecting notch in the other of said portions of material, the tabs and notches in one of said sheets being aligned with the tabs and notches in the other of said sheets, each intermediate slit portion including longitudinally spaced, slit sections extending laterally of said axis; and longitudinally moving at least one of Said sheets with respect to the other to cause the tabs and notches on said one sheet to be longitudinally disaligned with the tabs and notches of said other sheet to interlock said sheets together.
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |