US2602113A

US2602113A - Mounting device for television tubes

Info

Publication number: US2602113A
Application number: US202347A
Authority: US
Inventors: Richard A Fiseh
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-12-22
Filing date: 1950-12-22
Publication date: 1952-07-01
Anticipated expiration: 1969-07-01

Description

July 1, 1952 A, 5 2,602,113

MOUNTING DEVICE FQR TELEVISION TUBES Fild Dec. 22, 1950 W] fwd; {4 m Patented July 1 1952 7 M I V 2,602,113' i I MGUN'BING DEVIGEiFOR TELE-VISION TUBES:

' jmetarld 5. mm, Kew GardenaNLY. i

. .j v 6-C laimsi This invention i" ates: t'o arv'ecvei and impi oved devicefor shielding 3 ant prteetihg television and cathode times, and more pa 'ieulai ly it relatesto an improved-ar a novel l or securing teievision tubes to them -i especti ve chas' i l ,7 V v t v. v a

The general idea of shielding-electrical equip inent having exeds'eu earts is old and weitiinown Enit the sl'liel'dinig of metalbacked cathode ray oi television tubes 'ia'i eserits" peculiai amenities. Iheiiietal backed eathotiera" or'televisi" ti'ib'e omprises a g'lass bulli ing tl-ie ele node structure, ametal tube Section a varyi ng diametefi -Gusu'ally" trustecoaie' the small 'end of is-united to the ffifi glass bulb aind a glass lens element h is united to the open-o1 la'tge en'do i the-said metal tube.

order tliat a good seatcan ta ottaineci be"- tween the lens mathe fiietal baek-"m g the metal back oi' conical-seetibr'r is flared outwardly at the large-end to term a; seat for are found edge portioitof the lem- I I In previouslwi'ssued linited states Letters-Pat'- entl- Non 2,503,8-t33 F diselosed a shirt to? protecfing 'the back i-r ig ct metat-Haeke I television onca'thode fay tubes, and claim in'g member tor secufieiy holding the skii' fi snu'glki atom: the tuba-and f6? s'diififi'g the tilb'e to the olifiefst The olariipin'g' nie'inber' disclosed the aforementioned patent has been generaliy accepted in the" 1 industry" as' a most s'afisfiactory means for 'Ii'1'ouiiti1'ig" i'ilie tut'e on ch'ass'i's and may be adapted flil 'fih mountingof tubes oi various sl-iapes; the must; commonly ifipfoy ed tubes hat-'- ni e ceia'r faces and ttu'steecrfieat ea-c1; portion mat -clamping" merfitee has internal jflange's adapted tb straddle-the; flange: of the tube and external: flanges aldel'i'ited to hold a ietai'r iii-ng member forisecuri'ngt the? tiibeiqt'o a: chassis. An object of the instantiinventib n': is' to? nro= vide a new" and: i-rii'pfoved.v clamping-i member which: is specifically adaptedzfor: use with sub stantially rectangulan, on square-faced tubes.

Another: object. of this; invention is to provideza new andimp'roiied; means with'a builtin retaining: member for securing"; televisionk and cathode ray tubes: torthei-x cha'ssisi V Another object of the instant invention is to: provide" newand improved v means for" securingtelevisiom and cathode: ray tubes: to their chassis-11m a2 mannen which ie giresei-its av sub stantia-la saving; ofi materials) and expense. JEhese objects and others ancillary? thereto are accomplished:- by providing; -a 1u-shaped plastic coated metal: rod; of? suitable-diameter andalength so that it will fit about three sides of the flared or lensend of ai substantialiysquare 01 rectangulai' faced tube. The: ends ot the rodare an choredt in' the chassis; The rod isprovided with foursuitably shaped plastic comer members so spaced" .onthe rod so as to fit snugly over the flanged portionof the tube at its: corne tsg Two of the plastic members are provided with exterior or outwardly extending annulaii flanges between which theedge-of the cabinet-or chassis fits. 1

The plastic coating on the U-shapem rod as well as the four corner members are preferably formed from hydrocarbon polymeric materials such aspo1y;ethylene;v p'olyisobutylenea polystyrene; polymersand copolymers 0t butadienes; polymers and copolymersof methyl substituted homologues: ofbutadienegsuchas isopr'en'e etc. Other polymeric v materials having highinsulating xiaiues" which may beemployed arethe polymers and copolymers .ofvinylidene chloride: and vinylid'ene fluoride polyvinyl carbazole, pol-yvinyl napthalene, etc. Impregnatedvfabricssuch as. cellulose acetate: impregnated with: vinyl butyral and similar materials may also be-employedz The" novel features characteristic ofthis inventio'n. are set forthwith particularity in the appended; claims? The invention ritself-,t= however, both as to its organization? and its method ofi operation; together: with additional ob; ectsa'nd' ad- Va'iitages thereof, will;- best be understood from the fol-lowing; description ofi sp'ecific embodiments when read in; connection with the accompanyingzdrawings-in which: a a

Figure 1 is a plan view showing my invention as itI-is: mounted on: a television. tubei a Figui e 2' is an" elevation? view showing?- my; irrventi'on-las- -itzappears' from thef top; whene mounted on a' television tube. a

Figur'e 3 shows a modification: of the' device show'nt'iniFigures: 11and'2; V

F-lgurei 4 is as cross-section view of? the plast-i'c coatedimetal ro'di Figure 5 is; asectibnal taken th fough li 'ne 5 5 of Figi'ire 1' showing.- one corner mam:- b'er ai'ida pant dfi the tube to which it iszaflplied in cross-section. v i a I Figure 6 is- :tsectional view: taken? through:v line 6-?6 0f: Figure" 1-.) e v li'ig'ure'lisavdetail vl-iew'of the rear: of the corner gesmbersshowing reinforcingeamtheat dispersing The; lens 10 at a substantially square-101': rectangulartelevisioittube" for which; this invention is especially useful. is shown in Figure 1. It is the practice in the industry to construct such tubes with rounded corners.

The mounting device of the invention comprises the

corner members

25, 26, 21 and 28 which are connected by and firmly united to the plastic coated U-shaped metal rod 26.

The

corner members

25, 26, 21 and 28 are made of a stiff, flexible plastic material such as polyethylene. The plastic coated metal rod 26 is curved into a U-shape so as to fit around three side of the periphery of the flange 2| at the lens end of the tube l2 and the corner members are so constructed as to prevent the. intermediate].

greater radius of curvature than the corners of v the flange 2 I. The two

upper corner member

25 and 26 are each constructed with two interior annular flanges 3| and 32 forming channel 33 there between as shown in Figure 5. The

members

25 and 26 shown in Figure 1 curve through approximately 90 arcs, and the channel 33 has a radius of curvature substantially equal to that of the outside of the flange 2| at the corners thereof. The annular flanges 3| and 32 of

corner members

25 and 26 fit snugly adjacent the exterior flange 2| at its rounded upper corners. It is, of course, understood that the channel 33 may be shaped to fit any desired shape of corner flange on the cathode-ray tube.

The

lower corner members

21 and 28 are similar to

members

25 and 26 in that they contain inwardly extending annular flanges 3| and 32 forming channel 33' therebetween. They are constructed to fit the flange 2| at its lower corners in the same manner that

members

25 and 26 fit flange 2| at its upper corners. However, the lower edges of

corner members

21 and 28 also contain outwardly extending flanges 46 and 4| forming channel 42 therebetween. Each of

corner members

21 and 28 has integrally joined at the inner end thereof the plastic,

flap

45 or 46, respectively. The

flaps

45 and 46 are continuations of the

corner members

21 and 28 except that their upper edges 44 and 44' are not curved but extend tangentially from the

inner edges

41 and 41 of corner members 21 and'28 respectively while the lower edges 48 and 4B'1of flaps 45 and 46'respectively taper upwardly toward

edges

44 and 44.

Flaps

45 and 46 are approximately two inches long, thin enough to be flexible and terminate at the vertical edges 49 and 49' respectively.

Since it is desirable to keep television sets as compact as possible," many of the delicate parts are located near the lens end of the tubeand in close proximity thereto. The

flaps

45 and 46 serve to protect these parts as well as the lower portion of the tube against shock and jarring,

The outer rear surface of corner members .25, 26, 21 and 28 contain suitably disposed fins 5|, 52, 53, shown in Fig. 7 which serve to reinforce and'keep the

corner members

25, 26, 21 and 28 firmly inplace and which also aid in the dissipation of any excess heat.

In one modification of my invention, best shown in Fig. 3, the upper part or top of the inverted U of the plastic-coated rod 26' is made longer than necessary. The excess is taken up in the damper or spring portion 56 located between the

upper corner members

25 and 26. Television tube manufacturers allow a large tolerance inthe manufacture of the tube with the result that the periphery of the flange 2| varies somewhat in difierent tubes of the same general size. The damper 56 gives my invention suflicient flexibility to permit its use on all tubes of the particular size for which it is constructed.

The member 26 consists of a metal rod 22 coated with a layer of plastic 23 as shown in Figure 4. Any suitable metal and plastic may be used. In the preferred embodiment'of my invention I employ a steel rod of about inch coated with plastic layer of approximately .015 inch of polyethylene. The coating is accomplished in any conventional manner such as by extruding the plastic while drawing the rod through a wirecoating' extrusion nozzle. It is necessary that the rod 22 be sufiiciently rigid to retain whatever shape it is bent into. When the instant invention is applied to a television tube, the interior annular flanges 3| and 32 of

corner members

25 and 26 and interior annular flanges 3| and 32' of

corner members

21, and 28 are engaged with flange 2|. The plastic coated rod 26 is; then securely anchored in the cabinet in any conventional manner. In the present disclosure, 1 have shown member 26 anchored to cabinet 66 by means of threaded wing nuts 6| and fil;

. In the preferred embodiment of my invention, I employ a four cavity mold. one cavity for each corner member. The plastic-coated metal rod 26 is-suitably. shaped to form-a: U of the desired size and proportions after which it is positioned into the four mold cavities. The

corner members

25, 26, 21 and 28 and the

flap

45 and 46 are then injection molded in one-or -more operations so as to form the

corner members

25 and 26 about the curved portions of the plastic-coated metal rod 26 at its curves and soas to formthe

comer members

21 and 28 partially about the legs of the U as shown in Figure 1 and at a distance from the

upper corner members

25 and 26 so as to fit the specific tube for which the device of the invention is being constructed.

Since a four cavity mold may be employed, it will be understood that the mold may be made in four or more sections which can be moved with, respect to each other so that it is possible to make the. product of this invention for square or rectangular tubes of many sizes with only one set of molds.v

It will be seen that this invention provides a new and novel means for securing-square or rectangular faced cathodeyrayor televisiontubes to their chassis, for protecting the flanges on the lens end of such tubes, and for accomplishing these results in an efilcient, material saving manner. Whereas withtherclamping member of Patent No. 2,503,813 ,it .is necessary to first secure-the clamping member onto the tube flange and? then add a-retaining member to secure the tube to the chassis-with the device of this application the retainingrod is part' of the clamping member and isappliedto the tube at the same time the insulating corners are applied. Thus the retaining rod'26 serves the double purpose of holding theicorners'in'position and of securing the tube to the chassis.

Iclaim: z

1. In a mounting device for a metal'backed cathode ray tube which is held upona chassis and which includes a glass bulb, a metal tube section of varying diameter and aglass lens united to the large endoi' thev tube sectionby means of an outwardlyrextending tube flange, the new and improved 'donstruction'comprising asserts a u-shaped rod; member; and; tour flange-contacting members, the distance between the two legs of said'U-sh'aped memberbeing greaterthan at least one dimension of saidc'athode ray tube measured acrossthe flange thereof; said flangecontacting members being. .integrally afflxed. to said U-shaped rod member'i andextendingI-ifnto theinterior portion of said U so? as to r t'ainl 'said rod member-out of cameraman said tubeflange. each or; said flange-contacting member'sbeing provided with a suitable channel on its inner side for straddling said outwardly extending tube flange means at the ends of the legs of said U-shaped member for securing the latter to said chassis.

2. In a mounting device for a metal backed cathode ray tube which is held upon a chassis and which includes a glass bulb, a metal tube section of varying diameter and a glass lens united to the large end of the tube section by means of an outwardly extending tube flange, the new and improved construction comprising a U-shaped metal-cored, rod member, a first pair of corner members and second pair of corner members, said first pair of corner members being integrally aiflxed to said U-shaped rod member with one corner member at each of its corners, said second pair of corner members being integrally affixed to the opposite legs of said rod member, each of said corner members having a plurality of inwardly extending flanges forming at least one channel therebetween, each of said channels being suitable for straddling said outwardly extending tube flange, each of the said first and second pairs of corner members extending inwardly from said U-shaped rod member so as to retain said rod member out of contact with said tube flange, means at the extremities of said U-shaped rod member for securing it to said chassis.

3. In a mounting device for a cathode ray tube which is held upon a chassis and which includes a glass bulb, a tube section of varying diameter and a glass lens united to the large end of the tube section by means of an outwardly extending tube flange, the new and improved construction comprising a U-shaped rod member, a first pair of corner members and a second pair of corner members, said first pair of corner members being integrally affixed to said U-shaped rod member with one corner member at each of its corners, said second pair of corner members being integrally aflixed to the opposite legs of said rod member, each of said corner members having two inwardly extending flanges forming a channel therebetween, said channel being suitable for straddling said outwardly extending tube flange, each of the said first and second pairs of corner members extending inwardly fromsaid U-shaped rod member so as to retain said rod member out of contact with said tube flange, each of the said second pair of corner members containing two outwardly extending annular flanges forming a channel therebetween for straddling portions of said chassis, means at the extremities of said U- shaped rod member for securing it to said chassis.

4. In a mounting device for a cathode ray tube which is contained within a chassis and which includes a glass bulb, a tube section of varying diameter and a glass lens united to the large end of the tube section by means of an outwardly extending tube flange. the new and improved construction comprising a substantially rigid U- 6 shaped,-plastic-ccatedjmetal rod member;v a first pai" stimulating-corner members,- and a second pair of insulating cornermembers, each oi said corner members describing" an arc off' subs'tantially 9Q", 'said-first-pair-oi' corner'me]'m'bers being i itee allyi arflxedjto said U-shapedfrod member with oneof-saidcorner members 'at 'each ores corners; said second pair of corner niembersbeing integrally aflixed to the opposite legs'of said rod memben each- .Of. said. corner members havin two inwardly extending flanges forming a channel therebetween, each of said channels bein suitable for straddling said outwardly extending tube flange each of the said first and second pairs of corner members extending inwardly from said U -shaped rod member as to retain said rod member out of contact with said tube flange, means at the ends of said U-shaped rod member for securing it to said chassis, the exterior surface of each of said corner members having reinforcing and heat dispersing fins.

5. In a mounting device for a cathode ray tube which is contained within a chassis and which includes a glass bulb, a tube section of varying diameter and a substantially rectangular glass lens united to the large end of the tube section by means of an outwardly extending substantially rectangular tube flange, the new and improved construction comprising a substantially rigid, U-shaped. plastic-coated, metal rod member, a first pair of insulating corner members and a second pair of insulating corner members, each of said corner members describing an arc of substantially each of said first pair of corner members being integrally amxed throughout its length to one of the corners of said U- shaped rod member, a portion of each of said second pair of corner members being integrally afilxed to a leg said rod member, each of said corner members having a pair of inwardly extending annular flanges forming a channel therebetween, each of said channels being adapted to straddle said outwardly extending substantially rectangular tube flange at one of its corners, the said first and second pairs of corner members extending inwardly from said rod member so as to retain said rod member out of contact with said tube flange, means at the ends of said U- shaped rod member for securing it to said chassis, said rod member including at least one expansion loop between two of the corner members.

6. In a mounting device for cathode ray tube which is contained within a chassis and which includes a glass bulb, a tube section of varying diameter and a substantially rectangular glass lens united to the large end of the tube section by means of an outwardly extending substantially rectangular tube flange, the new and improved construction comprising a substantially rigid U-shaped, plastic-coated, metal rod member, a first pair of insulating corner members and a second pair of insulating corner members each of said corner members describing an arc of substantially 90, each of said first pair of corner members being integrally amxed throughout its length to said U-shaped rod member at opposite corners, thereof, a portion of each of said second pair of corner members being integrally afiixed to a leg of said rod member each of said corner members having a pair of inwardly extending annular flanges forming a channel therebetween, the four of said channels, in the four corner members being adapted to straddle said outwardly extending substantially rectangular tube flange at the four corners, of

2,802,118 be 8 s the latter: each of the said mem rs extending V inwardly from said rod members so as to retain REFERENCES C D said rod member out of contact with said tube The following referencesare of. record in the flange, means at the end of said U-shaped rod file of thislpatentz' member for securing .it to said chassis. said rod 5 V UNITED A S PATENTS member including an extensible arcuate 100p ber r Y, a V tween said first pair or corner 'members, said Number Nam 7 i Date second pair of corner members having. integral 2 Englundet al. v Oct. '7. 1919 flexible plastic fiaps, V 2,484,315 Hinz OCt. 11, 1949 10 2,503,813 7 Fiseh, Apr. 11, 1950 RICHARD A. FISCH; 2,560,336 7 Fisch July 10, 1951