US4177104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating laminated layers
Assignee: Brady Corp
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Filing: 1977-11-14
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Granted: 1979-12-04
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Expires: 1997-11-14
Abstract
Abstract Laminate layers, such as a label and its liner, are separated by bending lengthwise-adjacent portions of the laminate end in opposite directions to cause shearing and lengthwise offset between the layers, and then releasing the end, the overall orientation being such that, upon release of the end, a differential in the forces that tend to straighten the layers drives apart the shear-weakened adhesive bond.
Inventors
- 👤 Robert H. Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:25
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/0004; B29C63/0013; B65; B65C; B65C9/00; B65C9/0006; Y; Y10; Y10T; Y10T156/00; Y10T156/19; Y10T156/1978; Y10T156/1989
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
Apparatus for separating layers of a laminate at an end thereof, comprising means for supporting said laminate to permit bending thereof at said end, and means for bending both said layers sharply in one direction at one portion of said laminate close to said end, and bending both said layers sharply in the opposite direction at a lengthwise-adjacent portionof said laminate closer to said end, to cause shearing and lengthwise offset between said layer, and then releasing both said layers at said end to permit them to spring back from said bending.
Claim 2
Dependent Claim
92 words
Apparatus for separating layers of a laminate at an end thereof, comprising means for supporting said laminate to permit bending thereof at said end, and means for bending both said layers sharply in one direction at one portion of said laminate close to said end, and bending both said layers sharply in the opposite direction at a lengthwise-adjacent portionof said laminate closer to said end, to cause shearing and lengthwise offset between said layer, and then releasing both said layers at said end to permit them to spring back from said bending.
Claim 3
Dependent Claim
64 words
Apparatus according to claim 1 wherein said means comprises a first member providing a narrow cavity, and a second member, narrower than said cavity, for forcing an end portion of said laminate into said cavity, to produce a 180° bend in one direction next to a sharper 90° bend in the opposite direction, the 180° bend being closest to the end of the laminate.
References Cited (Backward Citations)
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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) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |