US4516764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper feeding device
Assignee: Konica Minolta Inc
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Filing: 1982-11-18
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Granted: 1985-05-14
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Expires: 2002-11-18
Abstract
Abstract A paper feeding device comprises a paper feeding member feeding out paper from a cassette on a stand, and a lifting member for lifting the paper loaded on a bottom plate of the cassette against the paper feeding member. The improvement includes a driving system having a first spring clutch and a locking member deterring the spring clutch which is operated by a paper feeding command, a lift-operating member coupled with the locking member and including a second spring clutch engaged with the driving system, and an energizing member connected between the lift-operating member and the lifting member for providing a lifting force to the lifting member only during operation of the lift-operating member during paper feeding.
Inventors
- 👤 Takashi Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:39
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/02; B65H3/04; B65H3/047; B65H1/00; B65H1/08; B65H3/06; B65H3/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
In a paper feeding device comprising a paper feeding member for feeding out paper from a cassette inserted on a stand, a driving system for driving the paper feeding member upon a paper feeding command, and a lifting member for lifting papers loaded on a bottom plate of the cassette against the paper feeding member during a paper feeding operation, the improvement comprising a first spring clutch and a locking member deterring said first spring clutch which are incorporated in said driving system for driving the paper feeding member upon a paper feeding command, a lift-operating member coupled with said locking member for operating said lifting meber upon said paper feeding command, an energizing member connected between said lift-operating member and said lifting member for applying a lifting force to said lifting member only upon activation of said lift-operating member, and a second spring clutch engaged with said driving system for applying rotational movement to said lift-operating member when said driving system is operated upon a paper feeding command, said lift-operating member being moved to a non-operating position and said energizing member being deenergized during the period when a paper feeding command is not in effect.
Claim 2
Dependent Claim
196 words
In a paper feeding device comprising a paper feeding member for feeding out paper from a cassette inserted on a stand, a driving system for driving the paper feeding member upon a paper feeding command, and a lifting member for lifting papers loaded on a bottom plate of the cassette against the paper feeding member during a paper feeding operation, the improvement comprising a first spring clutch and a locking member deterring said first spring clutch which are incorporated in said driving system for driving the paper feeding member upon a paper feeding command, a lift-operating member coupled with said locking member for operating said lifting meber upon said paper feeding command, an energizing member connected between said lift-operating member and said lifting member for applying a lifting force to said lifting member only upon activation of said lift-operating member, and a second spring clutch engaged with said driving system for applying rotational movement to said lift-operating member when said driving system is operated upon a paper feeding command, said lift-operating member being moved to a non-operating position and said energizing member being deenergized during the period when a paper feeding command is not in effect.
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) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |