Patent US4844437A successfully refreshed from Google Patents.
US4844437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet separating arrangement
Assignee: Sharp Corp
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Filing: 1987-05-29
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Granted: 1989-07-04
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Expires: 2007-05-29
Abstract
Abstract A sheet separating arrangement including a sheet feeding roller and a separating rubber plate held in contact under pressure with the sheet feeding roller both of which are provided along a transport path so as to successively send out sheets transported via the transport path sheet by sheet, between the sheet feeding roller and the separating rubber plate, characterized in that there is provided a separating spring which is formed of an adjustable plate spring for urging the separating rubber plate so as to be depressed onto the sheet feeding roller. The separating spring is held in direct contact with the separating rubber plate and fixed to a fixing plate by a screw member.
Inventors
- 👤 Hironori Tanaka
- 👤 Matahira Kotani
- 👤 Masafumi Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:33
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/52; B65H3/5207; B65H3/523; B65H3/5238
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
186 words
A sheet separating unit which includes a sheet feeding roller, a separating rubber plate held in contact under pressure with said sheet feeding roller, each of said feeding roller and rubber plate being provided along a transport path for said sheets transported via said transport path sheet by sheet between said sheet feeding roller and said separating rubber plate, and an adjustable separating plate spring for urging said separating rubber plate against said sheet feeding roller, said separating plate spring being held in direct contact with said separating rubber plate by a fixing plate, said separating plate spring being provided with a fixing hole therein for inserting a screw means therethrough so as to adjustably secure said plate spring to said fixing plate, said fixing hole being formed as an elongated opening extending parallel to said separating rubber plate in the direction of said sheet feeding transport path, said separating plate spring being further formed with a plurality of pressure adjusting holes for receiving corresponding projections from said fixing plate, said pressure adjusting holes being formed on either side of and parallel to said fixing hole.
Claim 2
Dependent Claim
186 words
A sheet separating unit which includes a sheet feeding roller, a separating rubber plate held in contact under pressure with said sheet feeding roller, each of said feeding roller and rubber plate being provided along a transport path for said sheets transported via said transport path sheet by sheet between said sheet feeding roller and said separating rubber plate, and an adjustable separating plate spring for urging said separating rubber plate against said sheet feeding roller, said separating plate spring being held in direct contact with said separating rubber plate by a fixing plate, said separating plate spring being provided with a fixing hole therein for inserting a screw means therethrough so as to adjustably secure said plate spring to said fixing plate, said fixing hole being formed as an elongated opening extending parallel to said separating rubber plate in the direction of said sheet feeding transport path, said separating plate spring being further formed with a plurality of pressure adjusting holes for receiving corresponding projections from said fixing plate, said pressure adjusting holes being formed on either side of and parallel to said fixing hole.
Claim 3
Dependent Claim
17 words
The sheet separating unit of claim 1, wherein two fixing projections are provided on said fixing plate.
Claim 4
Dependent Claim
177 words
A sheet separating unit which includes a sheet feeding roller, a separating rubber plate held in contact under pressure with said sheet feeding roller, each of said feeding roller and rubber plate being provided along a transport path for said sheets transported via said transport path sheet by sheet between said sheet feeding roller and said separating rubber plate, and an adjustable separating plate spring for urging said separating rubber plate against said sheet feeding roller, said separating plate spring being held in direct contact with said separating rubber plate by a fixing plate, said separating plate spring being provided with a plurality of pressure adjusting holes therein formed parallel to said separating rubber plate in the direction of said sheet feeding transport path for selectively receiving corresponding pressure adjusting projections from said fixing plate, said separating plate spring being further provided with two elongated fixing holes on either side of and parallel with said plurality of pressure adjusting holes for inserting respective screw means therethrough so as to secure said plate spring to said fixing plate.
Claim 5
Dependent Claim
177 words
A sheet separating unit which includes a sheet feeding roller, a separating rubber plate held in contact under pressure with said sheet feeding roller, each of said feeding roller and rubber plate being provided along a transport path for said sheets transported via said transport path sheet by sheet between said sheet feeding roller and said separating rubber plate, and an adjustable separating plate spring for urging said separating rubber plate against said sheet feeding roller, said separating plate spring being held in direct contact with said separating rubber plate by a fixing plate, said separating plate spring being provided with a plurality of pressure adjusting holes therein formed parallel to said separating rubber plate in the direction of said sheet feeding transport path for selectively receiving corresponding pressure adjusting projections from said fixing plate, said separating plate spring being further provided with two elongated fixing holes on either side of and parallel with said plurality of pressure adjusting holes for inserting respective screw means therethrough so as to secure said plate spring to said fixing plate.
Claim 6
Dependent Claim
17 words
The sheet separating unit of claim 3, wherein one fixing projection is provided on said fixing plate.
Claim 7
Dependent Claim
149 words
A sheet separating unit which includes a sheet feeding roller, a separating rubber plate held in contact under pressure with said sheet feeding roller, each of said feeding roller and rubber plate being provided along a transport path for said sheets transported via said transport path sheet by sheet between said sheet feeding roller and said separating rubber plate, and an adjustable separating plate spring for urging said separating rubber plate against said sheet feeding roller, said separating plate spring being held in direct contact with said separating rubber plate by a fixing plate, wherein said separating plate spring is provided with a fixing hole therein for inserting a screw means therethrough so as to adjustably secure said plate spring to said fixing plate, said fixing hole being formed as an elongated opening extending parallel to said separating rubber plate in the direction of said sheet feeding transport path.
Claim 8
Dependent Claim
149 words
A sheet separating unit which includes a sheet feeding roller, a separating rubber plate held in contact under pressure with said sheet feeding roller, each of said feeding roller and rubber plate being provided along a transport path for said sheets transported via said transport path sheet by sheet between said sheet feeding roller and said separating rubber plate, and an adjustable separating plate spring for urging said separating rubber plate against said sheet feeding roller, said separating plate spring being held in direct contact with said separating rubber plate by a fixing plate, wherein said separating plate spring is provided with a fixing hole therein for inserting a screw means therethrough so as to adjustably secure said plate spring to said fixing plate, said fixing hole being formed as an elongated opening extending parallel to said separating rubber plate in the direction of said sheet feeding transport path.
Claim 9
Dependent Claim
135 words
A sheet separating unit which includes a sheet feeding roller, a separating rubber plate held in contact under pressure with said sheet feeding roller, each of said feeding roller and rubber plate being provided along a transport path for said sheets transported via said transport path sheet by sheet between said sheet feeding roller and said separating rubber plate, and an adjustable separating plate spring for urging said separating rubber plate against said sheet feeding roller, said separating plate spring being held in direct contact with said separating rubber plate by a fixing plate, wherein said separating plate spring is provided with a plurality of pressure adjusting holes formed parallel to said separating rubber plate in the direction of said sheet feeding transport path for selectively receiving corresponding pressure adjusting projections from said fixing plate.
Claim 10
Dependent Claim
135 words
A sheet separating unit which includes a sheet feeding roller, a separating rubber plate held in contact under pressure with said sheet feeding roller, each of said feeding roller and rubber plate being provided along a transport path for said sheets transported via said transport path sheet by sheet between said sheet feeding roller and said separating rubber plate, and an adjustable separating plate spring for urging said separating rubber plate against said sheet feeding roller, said separating plate spring being held in direct contact with said separating rubber plate by a fixing plate, wherein said separating plate spring is provided with a plurality of pressure adjusting holes formed parallel to said separating rubber plate in the direction of said sheet feeding transport path for selectively receiving corresponding pressure adjusting projections from said fixing plate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |