Patent US3658614A successfully refreshed from Google Patents.
US3658614A
Expired / Lapsed
US
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Method for wrapping molded pipe insulation
Assignee: PPG Industries Inc
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Filing: 1969-12-22
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Granted: 1972-04-25
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Expires: 1989-12-22
Abstract
Abstract Selected lengths of a first and second sheet material are advanced from their respective sources to a location and in such sequence where one of the materials is above a portion of the other. The upper material has an adhesive side opposed to the lower material. The selected lengths are severed simultaneously, which severing step also at least initially adheres the material together. Glue strips are placed on selected portions of the composite and registry is then made with a length of molded pipe insulation. The insulation is wrapped with the composite covering, the portion having the second strip being part of a flap for subsequent use in securing the insulation around the pipe.
Inventors
- 👤 Carl A Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:50
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/021; F16L59/022; F16L59/023; B; B29; B29C; B29C63/00; B29C63/02; B29C63/04; B29C63/12; B29C63/14; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075; Y10T156/1079; Y10T83/00; Y10T83/869; Y10T83/8798; Y10T83/8817
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
132 words
A method of wrapping pipe insulation which comprises, advancing a selected length of a first sheet material from a source thereof advancing a selected length of a second sheet material from a source thereof and to a location above said selected length of said first sheet material, said second sheet material having an adhesive on the surface thereof opposite the first sheet material therebelow, simultaneously severing said selected lengths of said sheet materials and adhering said severed length of said second material in overlapping relation the trailing edge of to the severed length of said first material, conveying said adhered materials to a location removed from the location where severing occurred and wrapping said sheet material about a length of pipe insulation while adhering said first sheet material to the pipe insulation.
Claim 2
Independent Claim
132 words
A method of wrapping pipe insulation which comprises, advancing a selected length of a first sheet material from a source thereof advancing a selected length of a second sheet material from a source thereof and to a location above said selected length of said first sheet material, said second sheet material having an adhesive on the surface thereof opposite the first sheet material therebelow, simultaneously severing said selected lengths of said sheet materials and adhering said severed length of said second material in overlapping relation the trailing edge of to the severed length of said first material, conveying said adhered materials to a location removed from the location where severing occurred and wrapping said sheet material about a length of pipe insulation while adhering said first sheet material to the pipe insulation.
Claim 3
Dependent Claim
36 words
A method as recited in claim 1, further including the step of separating the leading edge of the second material source and the leading edge of the first material source after severing said selected lengths therefrom.
Claim 4
Independent Claim
182 words
A method of wrapping molded pipe insulation having a radial cut permitting installation thereof around a pipe which comprises, positioning a length of pipe insulation with the radial cut thereof in a selected location, advancing a selected length of a first sheet material from a source thereof in a direction toward the pipe insulation, advancing a shorter length of a second sheet material from a source thereof in the same direction and to a location above said selected length of said first sheet material, said second sheet material having an adhesive on the surface thereof opposite the first sheet material therebelow, simultaneously severing said selected lengths of said sheet materials and adhering said severed length of said second sheet material in overlapping relation to the trailing edge of the severed length of said first material, conveying said adhered materials in a direction toward said pipe insulation, applying glue to selected portions of said first sheet material, feeding said sheet materials into registry with the pipe insulation, and wrapping said sheet materials thereabout while gluing said first sheet material to the pipe insulation.
Claim 5
Independent Claim
182 words
A method of wrapping molded pipe insulation having a radial cut permitting installation thereof around a pipe which comprises, positioning a length of pipe insulation with the radial cut thereof in a selected location, advancing a selected length of a first sheet material from a source thereof in a direction toward the pipe insulation, advancing a shorter length of a second sheet material from a source thereof in the same direction and to a location above said selected length of said first sheet material, said second sheet material having an adhesive on the surface thereof opposite the first sheet material therebelow, simultaneously severing said selected lengths of said sheet materials and adhering said severed length of said second sheet material in overlapping relation to the trailing edge of the severed length of said first material, conveying said adhered materials in a direction toward said pipe insulation, applying glue to selected portions of said first sheet material, feeding said sheet materials into registry with the pipe insulation, and wrapping said sheet materials thereabout while gluing said first sheet material to the pipe insulation.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |