Elongated-member-driving apparatus – With control means responsive to sensed condition – Work-responsive
Patent
1990-08-27
1991-04-16
Bell, Paul A.
Elongated-member-driving apparatus
With control means responsive to sensed condition
Work-responsive
227131, B25C 502, B25C 700, B27F 779, B27F 736
Patent
active
050075721
ABSTRACT:
An electrical stapler wherein when papers to be stapled are inserted into a stapling groove, a fine switch is touched to activate a motor for driving a gear set, the gear set being provided with two biasing rods which can bias a Y-shaped linkage of a stapling mechanism, a fixing rod being pivotably connected with front end of the Y-shaped linkage, two ends of the fixing rod being respectively connected to two springs, a pressing plate being disposed on the fixing rod whereby when operated, the pressing plate is bounded by the springs to strike out a staple from a staple magazine, a controlling circuit being used to control the stapling operation for saving labor and enhancing working efficiency.
REFERENCES:
patent: 4542844 (1985-09-01), Olesen et al.
patent: 4589581 (1986-05-01), Balma
patent: 4726505 (1988-02-01), Okazaki
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