Dental light device

• US 9,987,110 B2
• Filed: 05/25/2017
• Issued: 06/05/2018
• Est. Priority Date: 04/02/2009
• Status: Active Grant

• Current Assignee: Kerr Corporation (Envista Holdings Corporation)
• Original Assignee: Kerr Corporation (Envista Holdings Corporation)
• Inventors: Gill, Owen J., Barry, Ruth, Wyatt, Stacy Lee, Soundararajan, Gopikrishnan
• Primary Examiner(s): Bowman, Mary Ellen
• Application Number:
  US15/605,270
• Publication Number:
  US 20170258566A1
• Time in Patent Office: 376 Days
• CPC Class Codes: A61C 19/004 Hand-held apparatus, e.g. guns
• CPC Class Codes: A61C 2204/002 using batteries
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]
• CPC Class Codes: H05B 45/375 using buck topology
• CPC Class Codes: H05B 45/38 using boost topology
• CPC Class Codes: H05B 45/385 using flyback topology
• CPC Class Codes: H05B 45/397 Current mirror circuits
• CPC Class Codes: H05B 47/10 Controlling the light source
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

A curing light device includes a body with a tip portion that has a plurality of elements for providing electrical energy to the distal end of the tip and for removing heat from the distal end of the tip. A light engine includes at least one light emitting element operable for emitting light and is positioned on the distal end of the tip portion. A power supply is positioned in the body and is rechargeable and includes at least one ultracapacitor element. Spring electrical contacts are positioned in the body and electrically coupled with the ultracapacitor element. The spring electrical contacts are spaced along the length of the body and configured for electrically engaging the tip portion along its length for delivering power to the light engine and for provide a spring alignment of the tip portion in the body.

Claims

1. A curing light device comprising:

a body;

a tip having a proximal end and a distal end and configured for removably mounting with the body;

a light engine including at least one light emitting element operable for emitting light, the light engine positioned on the distal end of the tip;

a power supply positioned in the body, the power supply being rechargeable and including at least one ultracapacitor element;

a plurality of conductive contact structures positioned in the tip and coupled with the light engine, the conductive contact structures operable for engaging the power supply when the tip is mounted with the body for providing electrical energy to the light engine;

a magnet positioned with at least one of the body or the tip;

a metal element positioned in the other of the body or the tip;

the magnet and metal element positioned for engaging when the tip is removably mounted in the body for removably securing the tip with the body and maintaining the conductive contact structures engaged with the power supply.

2. The curing light of claim 1 wherein the magnet is positioned in the body and the metal element is positioned proximate the proximal end of the tip.

3. The curing light of claim 1 wherein the magnet and metal element are configured to rotate with respect to each other for rotation of the tip in the body.

4. The curing light of claim 1 wherein the magnet includes a magnetic disk and the metal element includes a metal disk, the disks configured for alignment with each other to secure the tip with the body.

5. The curing light of claim 1 wherein the magnet is made of a rare earth magnetic material.

6. The curing light of claim 1 wherein the magnet creates a pull force between the tip and body in the range of 0.5-6 pounds.

7. The curing light of claim 1 wherein the body includes a socket to receive the tip, the conductive contact structures of the tip including a pair of contact structures spaced longitudinally along the length of the tip, the body including at least a pair of electrical contacts positioned in the body socket and spaced longitudinally in the socket to align with the tip contact structures, the body contacts configured for surrounding the inside of the socket for engaging the tip contact structures around the socket and thus providing continuous electrical contact to the tip when it is rotated inside the socket.

8. The curing light of claim 7 wherein at least one of the body electrical contacts positioned in the socket includes a spring electrical contact extending around the socket and configured for engaging a tip contact structure with a spring force.

9. The curing light device of claim 8 wherein the at least one spring electrical contact includes a plurality of shoulders positioned around the spring electrical contact, the shoulders configured for engaging the tip contact structure at a plurality of positions on the tip contact structure.

10. The curing light device of claim 1 wherein the tip conductive contact structures are configured to operate as heat sink elements that are thermally coupled with the light engine for removing heat from the light engine.

11. A curing light device comprising:

a body including a socket formed in the body;

a tip having a proximal end and a distal end, the tip proximal end configured for being removably mounted in the body socket;

a light engine including at least one light emitting element operable for emitting light, the light engine positioned at the distal end of the tip;

a plurality of conductive contact structures positioned at the tip proximal end and coupled with the light engine, the conductive contact structures extending radially around at least a portion of the tip proximal end;

at least one electrical contact positioned in the body socket for engaging a conductive contact structures at the tip proximal end to deliver power to the light engine, the at least one electrical contact in the body socket further configured to surround the inside of the socket for engaging the tip contact structures around the socket and thus providing continuous electrical contact to the tip when it is rotated inside the socket.

12. The curing light of claim 11 wherein the at least one body electrical contact positioned in the socket includes a spring electrical contact extending around the socket and configured for engaging a tip contact structure with a spring force.

13. The curing light device of claim 12 wherein the at least one spring electrical contact includes a plurality of shoulders positioned around the spring electrical contact, the shoulders configured for engaging a tip contact structure at a plurality of positions on the tip contact structure.

14. The curing light device of claim 13 wherein the plurality of conductive contact structures of the tip includes a pair of contact structures spaced longitudinally along the tip proximal end, and further comprising a plurality of spring electrical contacts positioned in the socket and longitudinally spaced along the length of the socket to engage the tip contact structures at a plurality of positions along the length of the tip.

15. The curing light device of claim 11 wherein the tip conductive contact structures are configured to operate as heat sink elements that are thermally coupled with the light engine for removing heat from the light engine.

16. The curing light device of claim 11 further comprising:

a magnet positioned with at least one of the body or the tip;

a metal element positioned in the other of the body or the tip;

the magnet and metal element positioned for engaging when the tip is removably mounted in the socket body for removably securing the tip with the body and maintaining the conductive contact structures engaged with the electrical contact in the body socket.

17. The curing light of claim 16 wherein the magnet and metal element are configured to rotate with respect to each other for rotation of the tip in the body socket.

18. The curing light of claim 16 wherein the magnet is made of a rare earth magnetic material.