Original cover closer

• US 6,593,999 B1
• Filed: 11/21/2000
• Issued: 07/15/2003
• Est. Priority Date: 12/01/1999
• Status: Expired due to Fees

• Current Assignee: Katoh Electrical Machinery Company Limited
• Original Assignee: Katoh Electrical Machinery Company Limited
• Inventors: Hosaka, Hiroaki
• Primary Examiner(s): Adams, Russell
• Assistant Examiner(s): Brown, Khaled
• Application Number:
  US09/717,370
• Time in Patent Office: 966 Days
• Field of Search: 355/53, 355/72, 355/75, 355/76, 271/265.01, 271/272, 399/365, 399/379, 399/380
• US Class Current: 355/75
• CPC Class Codes: G03G 15/605 Holders for originals or exposure platens for photographic purposes in general G03B
• CPC Class Codes: H04N 1/00519 Constructional details not otherwise provided for, e.g. housings, covers
• CPC Class Codes: H04N 1/00551 Top covers or the like
• CPC Class Codes: H04N 1/00554 Latches or hinges therefor
• CPC Class Codes: H04N 1/10 using flat picture-bearing surfaces H04N1/113, H04N1/195 take precedence
• CPC Class Codes: H04N 2201/0416 Performing a pre-scan

Abstract

Original cover closer with mounting base and supporting member has bent side plates rotatably mounted to each other. A lifting member with document pressure plate has side plates mounted to the supporting member side plated enabling the lifting member side plates to rotate in a different direction. A pressure bearing pin is mounted between the mounting member side plates and a cam slider is in the supporting member with a cam part in contact with the pin. A spring between the slider and the lifting member urges the supporting member to open the original cover while urging the lifting member in a direction overlapping the supporting member.

Claims

1. An original cover closer, comprised of a mounting member, which has at least a mounting base and side plates, which are raised from both sides of the mounting base, and has said mounting base mounted to a main device unit side, a supporting member, which has at least a back plate and side plates, which are bent from the back plate, and has one end of each of the side plates being rotatably mounted via a first hinge pin to the corresponding side plate of said mounting member, a lifting member, which has a back plate, to which a document pressure plate is mounted, side plates and a top plate, which are bent from the back plate, and is axially mounted via a second hinge pin to the free end sides of the respective side plates of said supporting member in a manner enabling the respective side plates thereof to rotate in a direction that differs from said supporting member, a pressure bearing pin, which is axially amounted between the respective side plates at said mounting member side at positions that differ from those of said first hinge pin, a cam slider, which is fitted inside the supporting member in a manner enabling sliding and with the cam part thereof being in contact with the pressure bearing pin, and a coil spring, which is resiliently installed between said cam slider and said lifting member and is thereby made to urge said supporting member at least in the direction of opening of the original cover while rotatingly urging said lifting member in the direction that overlaps the supporting member, said original cover closer being characterized in that the coil spring is bent in advance in the direction of rotation of said lifting member.

5. An original cover closer according to claim 1, with which, in bending the coil spring in advance in the direction of rotation of the lifting member, one end part of said coil spring is made to contact the incliningly disposed top plate of said lifting member.

6. An original cover closer according to claim 1, with which, in bending the coil spring in advance in the direction of rotation of the lifting member, one end part of said coil spring is made to contact the inclined part of an upper spring bearing member mounted to the top plate side of said lifting member.

7. An original cover closer according to claim 1, wherein the pivotally supporting holes at the supporting member side to which said hinge pin is connected has a guitar shape and enables said supporting member to be detached from said hinge pin.

8. An original cover closer according to claim 1, wherein a conductive material with elasticity is wound around said hinge pin between said mounting member and said supporting member to achieve mutual electrical conduction between said members.

2. An original cover closer, comprised of a mounting member, which has at least a mounting base and side plates, which are raised from both sides of the mounting base, and has said mounting base mounted to a main device unit side, a supporting member, which has at least a back plate and side plates, which are bent from the back plate, and has one end of each of the side plates being rotatably mounted via a first hinge pin to the corresponding side plate of said mounting member, a lifting member, which has a back plate, to which an original cover is mounted, side plates and a top plate, which are bent from the back plate, and is axially mounted via a second hinge pin to the free end sides of the respective side plates of said supporting member in a manner enabling the respective side plates thereof to rotate in a direction that differs from said supporting member, a roller, which is axially mounted in a rotatable manner between the respective side plates at said mounting member side at positions that differ from those of said first hinge pin, a cam slider, which is fitted inside the supporting member in a manner enabling sliding and with the cam part thereof being in contact with the roller, and a coil spring, which is resiliently installed between said cam slider and said lifting member and is thereby made to urge said supporting member at least in the direction of opening of the original cover while rotatingly urging said lifting member in the direction that overlaps the supporting member, said original cover closer being characterized in that the coil spring is bent in advance in the direction of rotation of said lifting member.

3. An original cover closer, comprised of a mounting member, which has at least a mounting base and side plates, which are raised from both sides of the mounting base, and has said mounting base mounted to a main device unit side, a supporting member, which has at least a back plate and side plates, which are bent from the back plate, and has one end of each of the side plates being rotatably mounted via a first hinge pin to the corresponding side plate of said mounting member, a lifting member, which has a back plate, to which an original cover is mounted, side plates and a top plate, which are bent from the back plate, and is axially mounted via a second hinge pin to the free end sides of the respective side plates of said supporting member in a manner enabling the respective side plates to rotate in a direction that differs from said supporting member, a cam member, which is mounted between the respective side plates at said mounting member side, a cam slider, which is fitted inside the supporting member in a manner enabling sliding and with the cam part thereof being in contact with the cam member, and a coil spring, which is resiliently installed between said cam slider and said lifting member and is thereby made to urge said supporting member at least in the direction of opening of the original cover while rotatingly urging said lifting member in the direction that overlaps the supporting member, said original cover closer being characterized in that the coil spring is bent in advance in the direction of rotation of said lifting member.

4. An original cover closer, comprised of a mounting member, which has at least a mounting base and side plates, which are raised from both sides of the mounting base, and has said mounting base mounted to a main device unit side, a supporting member, which has at least a back plate and side plates, which are bent from the back plate, and has one end of each of the side plates being rotatably mounted via a first hinge pin to the corresponding side plate of said mounting member, a lifting member, which has a back plate to which an original cover is mounted, side plates and a top plate, which are bent from the back plate, and is axially mounted via a second hinge pin to the free end sides of the respective side plates of said supporting member in a manner enabling the respective side plates to rotate in a direction that differs from said supporting member, a spring bearing member, which is pivotally mounted in a swingable manner between the respective side plates at said mounting member side at positions that differ from those of said first hinge pin, and a coil spring, which is resiliently installed between the spring bearing member and said lifting member and is thereby made to urge said supporting member at least in the direction of opening of the original cover while rotatingly urging said lifting member in the direction that overlaps the supporting member, said original cover closer being characterized in that the coil spring is bent in advance in the direction of rotation of said lifting member.