Electricity: circuit makers and breakers – Special application – Actuated concurrently with operation or use of art device
Patent
1986-09-02
1988-01-19
Scott, J. R.
Electricity: circuit makers and breakers
Special application
Actuated concurrently with operation or use of art device
235 22, H01H 316
Patent
active
047206110
ABSTRACT:
An electro-manual drawer latch for a drawer which in a manual mode locks the drawer when the drawer is pushed into a housing and unlocks the drawer when the drawer is again pushed into the housing and which in an electrical mode prevents the drawer from being manually unlocked by pushing in on the drawer but which unlocks the drawer in response to an electrical signal, the latch including a housing, a drawer slidably mounted in the housing, the drawer having a latch for locking the drawer in housing, a spring disposed between the housing and the drawer for biasing the drawer out of the housing, a locking mechanism disposed in the housing for engaging the latch when the drawer is pushed into the housing to thereby lock the drawer in the housing, the locking mechanism being operable to disengage the latch in either a manual mode in response to a manual push on the drawer or an electrical mode in which manual unlocking of the drawer is prevented and instead the drawer is unlocked in response to an electrical signal received by the locking mechanism, and a control mechanism connected to the locking mechanism for selectively placing the locking mechanism in either the manual mode or the electrical mode, the control mechanism also being operable to supply the electric signal to unlock the drawer when the locking mechanism is in the electrical mode.
REFERENCES:
patent: 3061185 (1962-10-01), Richard
patent: 4603239 (1986-07-01), Ishii
Berkman, J. W.; IBM Tech. Disc. Bull.; "Multiple Cash Drawer Control"; vol. 10, No. 12, May 1968, pp. 1928, 1929.
Best, J. J. et al.; "IBM Tech. Disc. Bull.", Self-Restoring Latch/Unlatch Mechanism for Logic Controlled Drawer, vol. 17, No. 7, Dec. 1974, pp. 1846, 1847.
M-S Corp.
Scott J. R.
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