US3820591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sensing a dimension of sheets of material to be transported through an electrostatic reproduction machine
Assignee: Xerox Corp
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Filing: 1971-12-30
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Granted: 1974-06-28
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Expires: 1991-12-30
Abstract
Abstract Apparatus for regulating the removal of heat from a fusing assembly in accordance with a dimension of the sheets of material transported thereto is disclosed in accordance with the teachings of the present invention. Heat transfer means is energized by switch means, the latter being adapted to be contacted by activating means. The switch means and activating means are disposed for relative movement therebetween such that a contacting relationship is established when the dimension of the sheets of material included in a supply therefor exceeds a predetermined dimension. Movement between the switch means and activating means is effected by the adjustment of sheet guide means, said adjustment enabling said sheet guide means to receive sheets of material.
Inventors
- 👤 J Sisson
- 👤 P Norder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:53
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2039; G03G15/2042
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
In an electrostatic reproduction machine having heat transfer means for removing heat from a fusing assembly, apparatus for regulating the operation of said heat transfer means in accordance with a dimension of the sheets of material transported thereto, comprising: switch means adapted to be activated for de-energizing said heaT transfer means, said switch means being located at the supply of said sheets of material; and activating means adapted to contact said switch means when said dimension of said sheets of material included in said supply exceeds a predetermined dimension, said switch means and said activating means being disposed for relative movement therebetween.
Claim 2
Dependent Claim
102 words
In an electrostatic reproduction machine having heat transfer means for removing heat from a fusing assembly, apparatus for regulating the operation of said heat transfer means in accordance with a dimension of the sheets of material transported thereto, comprising: switch means adapted to be activated for de-energizing said heaT transfer means, said switch means being located at the supply of said sheets of material; and activating means adapted to contact said switch means when said dimension of said sheets of material included in said supply exceeds a predetermined dimension, said switch means and said activating means being disposed for relative movement therebetween.
Claim 3
Dependent Claim
43 words
The apparatus of claim 1 wherein one of said switch means and said activating means is fixedly positioned and the other is mechanically coupled to sheet guide means and movable therewith when said sheet guide means is adjusted to receive sheets of material.
Claim 4
Dependent Claim
54 words
The apparatus of claim 2 wherein said sheet guide means comprises first and second movable members admitting of a separation therebetween substantially equal to said dimension of said sheets of material received thereby, said first and second movable members being disposed for movement in opposite directions to provide an adjustment in said separation therebetween.
Claim 5
Dependent Claim
27 words
The apparatus of claim 3 wherein said switch means is fixedly positioned and includes a protruding member interposed in the path of travel of said activating means.
Claim 6
Dependent Claim
120 words
The apparatus of claim 4 wherein said activating means comprises a rigid member supported on drive means; said drive means being mechanically coupled to and movable with said first movable member and responsive to a motive force exerted thereon to drive said first movable member in a direction corresponding to the direction of said motive force to thereby adjust the separation between said first and second movable members whereby said first and second movable members are enabled to receive sheets of material supplied thereto, the path of travel of said rigid member being intersected by said protruding member such that said protruding member is contacted by said rigid member when said first movable member is displaced to a predetermined position.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |