US3935357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow extruded plastic strips for packings
Assignee: I P SpA SA
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Filing: 1973-03-27
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Granted: 1976-01-27
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Expires: 1993-03-27
Abstract
Abstract An elongated shape or strip from which packing cases may be made is formed as a hollow section of plastic material, the secton having outer walls and inner interconnecting and strengthening walls. The general form of the section may be flat, rectangular, polygonal or triangular, and the inner and outer walls may be of differing thicknesses. Preferably the outer sides of the shape are smooth or curved, and a packing case may use several different sections, all of plastic material or some of wood or metal.
Inventors
- 👤 Pietro Padovani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:03
CPC Classifications
B; B65; B65D; B65D15/00; B65D15/22; B65D11/00; B65D11/16; B65D11/20; B65D11/22; Y; Y10; Y10S; Y10S206/00; Y10S206/814; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24562; Y10T428/24628; Y10T428/24661; Y10T428/24744
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A hollow extruded strip having at least one end, made of plastic material comprising an outer wall forming a closed triangular shape when viewed in cross-section taken transverse to the longitudinal axis of the strip, and a plurality of inner walls parallel to the longitudinal axis of the strip, formed integral with and connecting opposed portions of said outer wall, wherein the homogeneous molecular orientation of said plastic material in the longitudinal direction of said strip.
Claim 2
Dependent Claim
76 words
A hollow extruded strip having at least one end, made of plastic material comprising an outer wall forming a closed triangular shape when viewed in cross-section taken transverse to the longitudinal axis of the strip, and a plurality of inner walls parallel to the longitudinal axis of the strip, formed integral with and connecting opposed portions of said outer wall, wherein the homogeneous molecular orientation of said plastic material in the longitudinal direction of said strip.
Claim 3
Dependent Claim
88 words
A hollow extruded strip made of plastic material comprising a plurality of outer walls, each outer wall forming a closed geometrical shape when viewed in cross-section taken transverse to the longitudinal axis of said strip; a plurality of inner walls parallel to the longitudinal axis of the strip and formed integral with and connecting opposed portions of each outer wall; and a connecting flange formed intregally with and connecting adjacent outer walls, the homogeneous molecular orientation of said plastic material is in the longitudinal direction of said strip.
Claim 4
Dependent Claim
88 words
A hollow extruded strip made of plastic material comprising a plurality of outer walls, each outer wall forming a closed geometrical shape when viewed in cross-section taken transverse to the longitudinal axis of said strip; a plurality of inner walls parallel to the longitudinal axis of the strip and formed integral with and connecting opposed portions of each outer wall; and a connecting flange formed intregally with and connecting adjacent outer walls, the homogeneous molecular orientation of said plastic material is in the longitudinal direction of said strip.
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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) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |