Patent US3840933A successfully refreshed from Google Patents.
US3840933A
Expired / Lapsed
US
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Scraping apparatus for rollers
Assignee: Individual
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Filing: 1973-08-27
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Granted: 1974-10-15
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Expires: 1993-08-27
Abstract
Abstract A roller scraping apparatus disposed between a pair of rollers of a paper mill consisting of a carriage having a pair of vertically spaced plate members, a scraping blade carried at the end of each said plate members, said blades being angled for scraping engagement with said rollers, posts carried by one of said plate members respectively being disposed in sleeves carried by the other of said plate members to hold said plate members in alignment, a jack member disposed between said plate members centrally thereof, means operating said jack member and an elongated operating handle member in connection with said apparatus.
Inventors
- 👤 A Olson
- 👤 A Schwab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:25
CPC Classifications
D; D21; D21G; D21G3/00; D21G3/02; B; B08; B08B; B08B1/00; B08B1/10; B08B1/16; B08B1/165; B08B1/30; D21G3/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
A scraping apparatus to be disposed between a pair of paper mill rollers having in combination a pair of vertically spaced plate members having opposed end portions, a scraping blade member carried at each of said end portions, means disposed between said plate members holding said plate members in aligned vertical relationship, means disposed between said plate members moving said blade members into operating engagement with the adjacent surfaces of a pair of said rollers, said first-mentioned means comprises a pair of sleeves carried by one of said plate membErs, and a pair of posts carried by the other of said plate members respectively received into said sleeves and movable relative thereto.
Claim 2
Dependent Claim
112 words
A scraping apparatus to be disposed between a pair of paper mill rollers having in combination a pair of vertically spaced plate members having opposed end portions, a scraping blade member carried at each of said end portions, means disposed between said plate members holding said plate members in aligned vertical relationship, means disposed between said plate members moving said blade members into operating engagement with the adjacent surfaces of a pair of said rollers, said first-mentioned means comprises a pair of sleeves carried by one of said plate membErs, and a pair of posts carried by the other of said plate members respectively received into said sleeves and movable relative thereto.
Claim 3
Dependent Claim
41 words
The structure set forth in claim 1, wherein said second mentioned means comprises a hydraulic cylinder, a piston operable by said cylinder engaging one of said plate members, and means connecting said cylinder with a supply of hydraulic fluid under pressure.
Claim 4
Dependent Claim
40 words
The structure set forth in claim 1, wherein said second mentioned means comprises a jack member, and means operating said jack member moving said plate members and the scraping blades carried thereby in directions away from and toward one another.
References Cited (Backward Citations)
US2033801A
Cited
US3481727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |