Patent US4031816A successfully refreshed from Google Patents.
US4031816A
Expired / Lapsed
US
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Apparatus for trimming adhering scrap from a punched cardboard blank
Assignee: Individual
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Filing: 1976-05-19
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Granted: 1977-06-28
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Expires: 1996-05-19
Abstract
Abstract Adhering scrap is trimmed from a punched cardboard blank by apparatus in which driven surface portions of two conveyors in a common plane define successive, spaced-apart parts of a path of travel for the blank. A roller rotatable between the conveyors has a resilient surface layer to which the path is tangential. A carrier is trained over two pulley assemblies of which one is separated from the roller by the path of the blank, and the carrier is guided by the second pulley assembly so that a portion of the carrier is spacedly parallel to the common plane. Ejectors on the carrier project into the path of the blank, displace adhering scrap and remain in the opening of the blank thus formed until the scrap is securely separated from the blank.
Inventors
- 👤 Masaharu Matsuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:22
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/18; B26D7/1818; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2074; Y10T83/2079
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
183 words
Apparatus for trimming adhering scrap from a punched cardboard blank comprising: (a) two conveyors having respective driven surface portions defining successive parts of a path of travel for said punched blank and spaced from each other in the direction of said travel; (b) a roller mounted between said conveyors for rotation about an axis and having a resilient surface layer, said path being substantially tangential to said layer; (c) a first pulley separated from said roller by said path; (d) a second pulley offset from said first pulley in said direction along said path, said pulleys being mounted for rotation about respective axes; (e) a carrier trained over said pulleys in a closed loop and bounding said path in a direction transversely away from one of said surface portions; (f) a plurality of ejector members mounted on said carrier projecting therefrom into said path; and (g) drive means operatively connected to said conveyors, said roller, and one of said pulleys for simultaneously moving said surface portions, said surface layer, and said carrier at the same speed in the same direction along said path.
Claim 2
Dependent Claim
183 words
Apparatus for trimming adhering scrap from a punched cardboard blank comprising: (a) two conveyors having respective driven surface portions defining successive parts of a path of travel for said punched blank and spaced from each other in the direction of said travel; (b) a roller mounted between said conveyors for rotation about an axis and having a resilient surface layer, said path being substantially tangential to said layer; (c) a first pulley separated from said roller by said path; (d) a second pulley offset from said first pulley in said direction along said path, said pulleys being mounted for rotation about respective axes; (e) a carrier trained over said pulleys in a closed loop and bounding said path in a direction transversely away from one of said surface portions; (f) a plurality of ejector members mounted on said carrier projecting therefrom into said path; and (g) drive means operatively connected to said conveyors, said roller, and one of said pulleys for simultaneously moving said surface portions, said surface layer, and said carrier at the same speed in the same direction along said path.
Claim 3
Dependent Claim
41 words
Apparatus as set forth in claim 1, wherein said surface portions are planar and aligned substantially in a common plane tangential to said roller and spacedly parallel to a portion of said carrier extending between said pulleys and bounding said path.
Claim 4
Dependent Claim
31 words
Apparatus as set forth in claim 2, wherein said roller and said one surface portion define therebetween a gap sufficient to receive scrap ejected from said path by said ejector members.
Claim 5
Dependent Claim
24 words
Apparatus as set forth in claim 1, wherein the portion of said loop bounding said path and said one surface portion are substantially parallel.
Claim 6
Dependent Claim
15 words
Apparatus as set forth in claim 4, wherein said portion of said loop is planar.
Claim 7
Dependent Claim
48 words
Apparatus as set forth in claim 1, wherein said first pulley includes a shaft, a plurality of axially elongated ribs circumferentially uniformly spaced about the axis of said pulley on said shaft, said carrier being formed with recesses therein conformingly receiving said ribs during rotation of said pulley.
Claim 8
Dependent Claim
74 words
Apparatus as set forth in claim 6, wherein said first pulley further includes a sleeve centered in said axis, said sleeve being internally grooved and conformingly receiving respective axially central portions of said ribs, said carrier including two belt members axially separated by said sleeve and a sheet member fastened to said belt members and trained over said sleeve, said ejector members being fastened to said sheet member and axially offset from said sleeve.
Claim 9
Dependent Claim
18 words
Apparatus as set forth in claim 7, wherein said ejector members are radially aligned with said sleeve member.
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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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |