US3873953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnet retaining means for a CRT beam adjustment device
Assignee: GTE Sylvania Inc
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Filing: 1974-02-14
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Granted: 1975-03-25
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Expires: 1994-02-14
Abstract
Abstract Improved means are provided for retaining magnets in an electron beam adjustment device formed for external positioning on the neck of a cathode ray tube. The device is comprised of at least one rotatable body member having a plurality of open-top pockets formed therein to accommodate compatibly shaped magnets. The body material adjacent to the pockets has at least one cavity formed therein adjacent to a pocket. Both the cavity and the associated pocket have a common discrete portion of sidewall wherefrom a substantially resilient protuberance is formed to extend into the pocket to provide compressive snap-in means for securely retaining a magnet therein.
Inventors
- 👤 Peter G Puhak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:11
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0205; H01F7/0221; H01J; H01J29/00; H01J29/46; H01J29/82; H01J29/823
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
216 words
In an electron beam adjustment device having a plurality of separate magnets retentively inserted therein and formed for positioning on the neck portion of a cathode ray tube having an axis therethrough, magnet retaining means comprising: a substantially planar body member having an aperture therein of a size to facilitate slidable encompassment of said neck portion and having an axis related to said tube axis; a plurality of individual open-top magnet accommodating pockets separated from one another by intervening body material and formed inward as a recess from one surface of the said body member in substantially radial relationship to said aperture, each of said pockets having a bottom and a defining sidewall with an opening therein facing into said aperture; at least one cavity formed in the intervening body material separating two sequential pockets in a manner that each of the related pockEts has a cavity formed adjacent thereto; each of said cavities having at least one discrete sidewall portion common to a sidewall portion of an adjacent pocket; and at least one substantially resilient protuberance formed on the pocket side of said common sidewall portion in a manner to extend from the sidewall of the pocket into said pocket to provide a compressive snap-in-means for retaining a compatibly shaped magnet member in said pocket.
Claim 2
Dependent Claim
216 words
In an electron beam adjustment device having a plurality of separate magnets retentively inserted therein and formed for positioning on the neck portion of a cathode ray tube having an axis therethrough, magnet retaining means comprising: a substantially planar body member having an aperture therein of a size to facilitate slidable encompassment of said neck portion and having an axis related to said tube axis; a plurality of individual open-top magnet accommodating pockets separated from one another by intervening body material and formed inward as a recess from one surface of the said body member in substantially radial relationship to said aperture, each of said pockets having a bottom and a defining sidewall with an opening therein facing into said aperture; at least one cavity formed in the intervening body material separating two sequential pockets in a manner that each of the related pockEts has a cavity formed adjacent thereto; each of said cavities having at least one discrete sidewall portion common to a sidewall portion of an adjacent pocket; and at least one substantially resilient protuberance formed on the pocket side of said common sidewall portion in a manner to extend from the sidewall of the pocket into said pocket to provide a compressive snap-in-means for retaining a compatibly shaped magnet member in said pocket.
Claim 3
Dependent Claim
27 words
Magnet retaining means according to claim 1 wherein said cavity is a substantially cylindrical formation having an axis parallel to said aperture axis in said body member.
Claim 4
Dependent Claim
69 words
Magnet retaining means according to claim 1 wherein each of said protuberances is a portion of a substantially resilient section of the wall defining the cavity formed in said intervening body material adjacent to said pocket, and wherein said wall section is of a thickness to impart a degree of retentive flexure to the protuberence portion of said pocket sidewall when said magnet member is inserted into said pocket.
Claim 5
Dependent Claim
76 words
Magnet retaining means according to claim 1 wherein the respective sidewall defining each of said cavities has at least one gap formed therein in a manner to open through the sidewall of said adjacent pocket, and wherein said cavity is of a size of accommodate a flexure member formed to seat in said cavity, said flexure member having a peripheral portion formed to extend through said sidewall gap into said pocket to provide said resilient protuberance.
Claim 6
Dependent Claim
16 words
Magnet retaining means according to claim 1 wherein said cavity extends completely through said body member.
Claim 7
Dependent Claim
38 words
Magnet retaining means according to claim 1 wherein said protuberance is a substantially triangular-related arrow head formation vertically oriented relative to said pocket sidewall with the thin apex thereof located proximal to the bottom surface of said pocket.
Claim 8
Dependent Claim
34 words
Magnet retaining means according to claim 1 wherein said protuberance is a substantially blister-shaped elongation formed relative to said pocket sidewall with a sloped edge thereof proximal to the bottom surface of said pocket.
Claim 9
Dependent Claim
30 words
Magnet retaining means according to claim 1 wherein said body member is formed of a plastic material having a degree of ductility to facilitate the desired flexure of said protuberance.
Claim 10
Dependent Claim
24 words
Magnet retaining means according to claim 1 wherein the aperture in said planar body member is substantially coaxial with the axis of said tube.
Claim 11
Dependent Claim
40 words
Magnet retaining means according to claim 1 wherein the top surface of said intervening material immediately peripheral to said cavity is provided with a counterbore, and whereof said protuberance has a projecting lip extending into the region of said counterbore.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |