Clip attached to a band of a cathode-ray tube

• US 6,204,894 B1
• Filed: 07/17/1998
• Issued: 03/20/2001
• Est. Priority Date: 07/17/1998
• Status: Expired due to Fees

• Current Assignee: Thomson Licensing SA (Vantiva SA)
• Original Assignee: Thomson Licensing SA (Vantiva SA)
• Inventors: Manson, Ernest Thomas
• Primary Examiner(s): Le, Vu
• Application Number:
  US09/118,583
• Time in Patent Office: 977 Days
• Field of Search: 348/821, 348/805, 348/822-825, 348/836, 348/787, 348/789, 313/477.R, 313/364, 313/402, 313/404, 313/407, 313/482, 248/231.81, 248/230.7, 248/229.16, 248/316.7
• US Class Current: 348/821
• CPC Class Codes: H01J 29/87 Arrangements for preventing or limiting effects of implosion of vessels or containers
• CPC Class Codes: H04N 5/645 Mounting of picture tube on chassis or in housing

Abstract

A cathode-ray tube includes an evacuated envelope having a faceplate panel with a sidewall joined to a funnel. Implosion protection band surrounds at least a portion of the sidewall and is in contact therewith. The band may include at a given location a pair of flair portions. A degaussing coil clip formed by a resilient or spring leaf material includes a pair of gripping tips that engage the band.

Claims

1. A video imaging apparatus, comprising:

a cathode-ray tube including an evacuated envelope, said evacuated envelope including a faceplate panel with a sidewall having a sealing edge joined to a funnel;

a shrinkfit implosion protection band formed by a strip of metal encircling said sidewall, said band having a front edge adjacent to a screen of said faceplate, a rear edge remote from said screen and a first side portion that is in contact with said sidewall of said panel disposed between said front and rear edges; and

a coil supporting clip having a pair of gripping tips and a spring leaf portion disposed between said pair of gripping tips for resiliently engaging said tips to said front and rear edges respectively.

2. A video imaging apparatus according to claim 1 wherein said leaf spring portion is arcuate.

3. A video imaging apparatus according to claim 1 wherein at least one of said gripping tips has a slanted edge such that a contact between said edge of said tip and said band is made along a portion of said slanted edge.

4. A video imaging apparatus according to claim 1 wherein a thickness of said clip between a pair of sides of said clip varies to provide for a release draft angle and to form a slanted edge portion at said gripping tip.

5. A video imaging apparatus according to claim 1 wherein said clip includes a hook portion for supporting a degaussing coil.

6. A video imaging apparatus, comprising;

a cathode-ray tube including an evacuated envelope, said evacuated envelope including a faceplate panel with a sidewall having a sealing edge joined to a funnel;

a shrinkfit implosion protection band formed by a strip of metal encircling said sidewall, said band having a front edge adjacent to a screen of said faceplate, a rear edge remote from said screen and a first side portion that is in contact with said sidewall of said panel disposed between said front and rear edges;

said band including a first flair portion spaced away from said sidewall and extending between said first side portion of said band and one of said edges; and

a coil supporting clip having a first end portion for engaging said front end and a second end portion for engaging said rear edge, said clip including a first gripping tip disposed between said first flair portion of said band and said sidewall.

7. A video imaging apparatus according to claim 6,wherein said band further includes a second flair portion opposite said first flare portion, spaced away from said sidewall and extending between said first side portion of said band and the other one of said edges and wherein said clip further includes a second gripping tip disposed between said second flair portion of said band and said sidewall.

8. A video imaging apparatus according to claim 7 wherein said band includes a plurality of pairs of said first and second pair portions, and wherein a given pair of said first and second flair portions is separated from an adjacent pair of said first and second flair portions such that a portion of said band separating said given and adjacent pairs is formed without a flair portion.

9. A video imaging apparatus according to claim 7 wherein a given one of said flair portions is formed continuously along a substantial portion of a perimeter of said band.

10. A video imaging apparatus, comprising:

a cathode-ray tube including an evacuated envelope, said evacuated envelope including a faceplate panel with a sidewall having a sealing edge joined to a funnel; and

a shrinkfit implosion protection band formed by a strip of metal encircling said sidewall, said band having a front edge adjacent to a screen of said faceplate, a rear edge remote from said screen and a first side portion disposed between said edges and in contact with said sidewall of said panel, said band including a pair of flair portions, spaced away from said sidewall and extending between said first side portion and said edges, respectively.

11. A video imaging apparatus according to claim 10 wherein said clip has a first gripping tip disposed between one of said flair portions and said sidewall and a second gripping tip disposed between the other one of said flair portions and said sidewall.

12. A video imaging apparatus according to claim 10, further comprising a coil supporting clip attached to said pair of flair portions.