Parallel coil pin ball flipper solenoid
OwnerKurt W. Degerinventor
Life of this patent
Estimating the term…
Abstract
A dual-coil solenoid for actuating pin ball game flippers having a high actuation and ball propelling force and a lower flipper and ball holding force. The solenoid includes low and high resistance coils placed in electrically parallel relationship across a source of electrical energy upon actuation of a flipper switch by a game player. Upon full deflection of the flipper and solenoid, an end of stroke switch automatically removes electrical energy from the low resistance coil thereby leaving only the high resistance coil energized to hold the flipper and game ball in position. A capacitance is positioned across the end of stroke switch to absorb electrical energy from the low resistance coil and to protect the switch. Diodes further protect both switch and the capacitor from excessive voltage transients.
Claims5
A dual force solenoid having a first actuation force and a second holding force including a plunger disposed for movement along an axis between first deactuated and second actuated positions;
- a pair of windings disposed around the axis;
- means for applying an electrical potential in parallel across the pair of windings thereby generating the first actuation force on the plunger, said actuation force urging the plunger between the first deactuated and the second actuated positions;
- said means for applying an electrical potential across the pair of windings including switch diode means, operatively connected to the plunger, for disconnecting the electrical potential from one of the windings when the plunger reaches the actuated position whereby the electrical potential across the other winding generates the second holding force on the plunger, said holding force maintaining the plunger in the actuation position.
A dual force solenoid having a first actuation force and a second holding force including a plunger disposed for movement along an axis between first deactuated and second actuated positions;
- a pair of windings disposed around the axis, one of said windings having an electrical resistance greater than the other of said windings;
- means for applying an electrical potential in parallel across the pair of windings thereby generating the first actuation force on the plunger, said actuation force urging the plunger between the first deactuated and the second actuated positions;
- said means for applying an electrical potential across the pair of windings including switch diode means, operatively connected to the plunger, for disconnecting the electrical potential from the lower resistance winding when the plunger reaches the actuated position whereby the electrical potential across the higher resistance winding generates the second holding force on the plunger, said holding force maintaining the plunger in the actuation position.
Dependencies are inferred from the claim text.