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US 5,435,539 AGranted
Driving force transmitting apparatus
AssigneeCanon Kabushiki Kaisha
InventorHiroaki Namiki
Life of this patent
Estimating the term…
Abstract
The present invention provides a driving force transmitting apparatus comprising a first rotary member having grooves formed in an outer peripheral surface thereof, a second rotary member having an outer peripheral surface of substantially the same diameter as that of the first rotary member, and a coil spring wound around the outer peripheral surfaces of the first and second rotary members.
Claims19
A driving force transmitting apparatus comprising:
- a first rotary member having a diameter and having a groove formed in an outer peripheral surface thereof;
- a second rotary member having an outer peripheral surface;
- and
- a coil spring wound around the outer peripheral surfaces of said first and second rotary members, wherein said groove is annularly formed in said outer peripheral surface of said first rotary member.
1 more element
A driving force transmitting apparatus comprising:
- a first rotary member having a diameter and being rotatively driven about an axis, with said first rotary member having grooves formed in an outer peripheral surface thereof;
- a driving source for rotatively driving said first rotary member about the axis;
- a second rotary member having an outer peripheral surface of substantially the same diameter as that of said first rotary member and rotable around the axis common to said first rotary member;
- a coil spring wound around said outer peripheral surfaces of said first and second rotary members in a direction that it is tightened against said first and second rotary members when said first rotary member is rotated by said driving source;
- and
- a control member for selectively locking an end of said coil spring near said first rotary member, thereby controlling the tightening of said coil spring against said first and second rotary members, wherein
- said grooves are annularly formed in said outer peripheral surface of said first rotary member.
4 more elements
An image forming system comprising:
- a driving source;
- a first rotary member having a diameter and being rotatively driven about an axis by a driving force supplied from said driving source, with said first rotary member having grooves formed in an outer peripheral surface thereof;
- a second rotary member having an outer peripheral surface of substantially the same diameter as that of said first rotary member and rotable around the axis common to said first rotary member;
- a coil spring wound around said outer peripheral surfaces of said first and second rotary members in a direction that it is tightened against said first and second rotary members when said first rotary member is rotated by said driving source;
- a control member for selectively locking an end of said coil spring near said first rotary member, thereby controlling the tightening of said coil spring against said first and second rotary members;
- a third rotary member rotated synchronously with said second rotary member to apply a rotational force to a sheet;
- and
- image forming means for forming an image on the sheet fed by said third rotary member, wherein
- said grooves are annularly formed in said outer peripheral surface of said first rotary member.
6 more elements
A drive force transmitting device, comprising:
- a first rotary member being rotatively driven about an axis by a drive force and having a groove annually formed on a peripheral surface thereof;
- a secondary rotary member having a smooth peripheral surface thereof;
- and
- a coil spring wound around the peripheral surface of said first rotary member and the smooth peripheral surface of said second rotary member.
1 more element
An image forming apparatus, comprising:
- a first rotary member having a diameter and grooves annularly formed on an outer peripheral surface thereof;
- a second rotary member having an outer peripheral surface;
- a coil spring wound around the outer peripheral surfaces of said first and second rotary members;
- sheet convey means driven by said second rotary member;
- and
- image formation means for forming an image on a sheet conveyed by said sheet convey means.
3 more elements
An image forming apparatus, comprising:
- a first rotary member driven about its longitudinal axis and having a groove annually formed on an outer peripheral surface thereof;
- a second rotary member having a cylindrical shape and a smooth outer peripheral surface;
- a coil spring wound around the outer peripheral surfaces of said first and second rotary members;
- sheet convey means driven by said second rotary member;
- and
- image formation means for forming an image on a sheet conveyed by said sheet convey means.
3 more elements
Dependencies are inferred from the claim text.