Elongated-member-driving apparatus – With control means responsive to sensed condition – Work-responsive
Patent
1997-11-14
1998-08-11
Smith, Scott A.
Elongated-member-driving apparatus
With control means responsive to sensed condition
Work-responsive
227131, B25C 104
Patent
active
057915440
ABSTRACT:
An electric stapler in which sheets conveyed along the sheet guide surface are staplied in a stapling position on a sheet guide surface, the electric stapler comprises: a switch; a staple unit for stapling the sheets in the stapling position in response to the switch; a first actuator protruding in part from the sheet guide surface, wherein, when the first actuator brings into contact with more than one place of one edge side of the sheets conveyed beyond the stapling position and moved by the sheets being conveyed, the first actuator actuates the switch so as to operate the stapling unit; and a second actuator positioned upstream the first actuator, a part of the second actuator selectively projecting and retracting with respect to the sheet guide surface, wherein, when the second actuator brings into contact with predetermined lengths of different edge sides constituting a corner portion of the sheets being conveyed beyond the stapling position while the part protruding from the sheet guide surface and moved by the sheets being conveyed, the second actuator actuates the switch so as to operate the stapling unit.
REFERENCES:
patent: 4795071 (1989-01-01), Jacobs et al.
patent: 5427296 (1995-06-01), Chen
patent: 5595336 (1997-01-01), Everdyke
patent: 5657918 (1997-08-01), Shimomura et al.
Riso Kagaku Corporation
Smith Scott A.
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