Light generating apparatus for curing dental restorative composites
First Claim
1. An apparatus for interconnecting an alternating current source with light generating means for a time cycle beginning after an initial dwell time, comprising:
- (a) time delay means;
(b) cycle control means operatively coupled to said time delay means, said cycle control means being activated for a preselected time interval after activation of said time delay means; and
(c) switch means coupled with said cycle control means and interconnected between the alternating current source and the light generating means, said switch means;
in response to the activation of said cycle control means, interconnecting the alternating current source with the light generating means when the alternating current source crosses a zero voltage point in the alternating current cycle; and
in response to the deactivation of said cycle control means, disconnecting the alternating current source from the light generating means.
3 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for photochemically curing organic composites used to repair teeth includes a quartz halogen lamp (12) which is activated for a particular length of time by a cycle control circuit (42) which produces a control signal for a preselected time interval. A switching circuit (38) is coupled with the cycle control circuit (42) to interconnect an alternating current source with the quartz halogen lamp (12) at a point in the alternating current cycle when the alternating current crosses a zero voltage level. The control circuit (42) is operably coupled to a time delay circuit (40) which activates the control circuit (42) after a preselected time period after activation of the control circuit (40).
81 Citations
22 Claims
-
1. An apparatus for interconnecting an alternating current source with light generating means for a time cycle beginning after an initial dwell time, comprising:
-
(a) time delay means; (b) cycle control means operatively coupled to said time delay means, said cycle control means being activated for a preselected time interval after activation of said time delay means; and (c) switch means coupled with said cycle control means and interconnected between the alternating current source and the light generating means, said switch means; in response to the activation of said cycle control means, interconnecting the alternating current source with the light generating means when the alternating current source crosses a zero voltage point in the alternating current cycle; and in response to the deactivation of said cycle control means, disconnecting the alternating current source from the light generating means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. An apparatus for photochemically curing organic composites used to repair teeth, comprising:
-
(a) light generating means; (b) means for applying the light produced by said light generating means on the organic composites; (c) time delay means for producing an output signal at a preselected time period after activation of said time delay means; (d) cycle control means operably coupled to said time delay means to produce a control signal for a preselected time interval in response to said output signal; and (e) switch means coupled with said cycle control means and interconnected between an alternating current source and said light generating means, said switch means; in response to said control signal, interconnecting the alternating current source with said light generating means at the point in the alternating current cycle when the alternating current crosses a zero voltage level; and upon termination of said control signal, disconnecting the alternating current source from said light generating means. - View Dependent Claims (19, 20, 21, 22)
-
Specification