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US4049348A Expired / Lapsed US ⏱️ 0.0 years remaining

Photocopying apparatus

Assignee: Individual
•
Filing: 1975-12-19
•
Granted: 1977-09-20
•
Expires: 1995-12-19
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Abstract

Abstract In photocopying apparatus of the type in which the document to be copied is drawn to pass in front of an elongated exposure window extending transversely to the direction of passage, the window is constituted in a guide and support plate for the sheet to be copied. At least two long openings respectively on both sides of the window and parallel to the latter are each traversed by a front and rear roller respectively for driving the sheet, protruding a short height above the upper surface of the plate and extending in one or several sections, over substantially the whole width of the plate. The drive rollers cooperate by elastic pressure, with a "counterplate" arranged at a slight distance above the plate so as to constitute with it a flattened guide duct for the sheet to be copied, and presenting a smooth and slippery lower surface to the sheet. A finger protruding through a short longitudinal slot in the support plate against elastic pivoting means senses the passage of a sheet to be copied and actuates a microswitch to start the machine operations. The counterplate may be a thin transparent plate forming part of a removable guide and exposure carriage bearing a flexible cover sheet on one edge. This enables a page in a book to be copied.

Inventors

  • 👤 Yves Cormier

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 07:33
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/6221; G03B27/6235

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 137 words
Photocopying apparatus having an inlet end and an outlet end, said apparatus serving to duplicate open books and linearly traveling single sheets comprising a horizontally arranged guide plate, laterally spaced longitudinally extending guide means disposed adjacent to said guide plate, an exposure window associated with said guide plate, primary rotatable feed rollers spaced inwardly of said inlet end of said apparatus, secondary rotatable feed rollers in proximity to said exposure window, a linearly movable carriage element having oppositely disposed lateral edges, means associated with said longitudinally extending guide means adapted to engage said lateral edges of said carriage, carriage retention control means positioned in proximity to said outlet end of said apparatus, and microswitch means in proximity to said primary feed rollers serving to close a circuit to cause said primary and secondary rollers to begin rotation.
Claim 2
Dependent Claim 137 words
Photocopying apparatus having an inlet end and an outlet end, said apparatus serving to duplicate open books and linearly traveling single sheets comprising a horizontally arranged guide plate, laterally spaced longitudinally extending guide means disposed adjacent to said guide plate, an exposure window associated with said guide plate, primary rotatable feed rollers spaced inwardly of said inlet end of said apparatus, secondary rotatable feed rollers in proximity to said exposure window, a linearly movable carriage element having oppositely disposed lateral edges, means associated with said longitudinally extending guide means adapted to engage said lateral edges of said carriage, carriage retention control means positioned in proximity to said outlet end of said apparatus, and microswitch means in proximity to said primary feed rollers serving to close a circuit to cause said primary and secondary rollers to begin rotation.
Claim 3
Dependent Claim 29 words
Photocopying apparatus as defined by claim 1, in which at least a portion of said carriage is supported in a rigidifying frame and further includes a flexible cover sheet.
Claim 4
Dependent Claim 29 words
Photocopying apparatus as defined by claim 2, in which said rigidifying frame encompasses a transparent counterplate provided with means defining an opening therein arranged for cooperation with said microswitch.
Claim 5
Dependent Claim 31 words
Photocopying apparatus as defined by claim 3, in which said counterplate is disposed in spaced relation to said guide plate to permit passage therebetween for copying of linearly traveling single sheets.
Claim 6
Dependent Claim 23 words
Photocopying apparatus as defined by claim 1, in which said means that engage said lateral edges of said carriage include pressure roller elements.
Claim 7
Dependent Claim 26 words
Photocopying apparatus as defined by claim 5, in which said pressure roller elements are mounted above and in opposition to said primary and secondary feed rollers.
Claim 8
Dependent Claim 24 words
Photocopying apparatus as defined by claim 5, in which further oppositely disposed supplemental pressure rollers are arranged substantially medially of said pressure roller elements.
Claim 9
Dependent Claim 23 words
Photocopying apparatus as defined by claim 1, in which secondary feed rollers include a transversely extending array of independent elements of varying diameter.

References Cited (Backward Citations)

US2959095A Cited
US3503678A Cited
US3558224A Cited
US3695754A Cited
US3858975A Cited
US3806239A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-09-19 1981-03-21 1981-09-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-09-19 1985-03-21 1985-09-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-09-19 1989-03-21 1989-09-20 $7700.00 Window Closed / Lapsed

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