Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2669774 A
Publication typeGrant
Publication dateFeb 23, 1954
Filing dateOct 5, 1949
Priority dateOct 5, 1949
Publication numberUS 2669774 A, US 2669774A, US-A-2669774, US2669774 A, US2669774A
InventorsCharles R Mitchell
Original AssigneeSylvania Electric Prod
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Mount tray
US 2669774 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Feb. 23, 1954 c, MITCHELL 2,669,774

MOUNT TRAY Filed 00;- 5, 1949 INVENTOR 5 l'. CHARLES R. MITCHELL Z 55 BY ME M Patented Feb. 23, 1954 MOUNT TRAY Charles R. Mitchell, Seneca Falls, N. Y., assignor to Sylvania Electric Products Inc., a corporation of Massachusetts Application October 5, 1949, Serial No. 119,642

3 Claims.

The present invention relates to a tray for handling or storing small parts and more particularly to a tray which is adapted to securely hold a number of mount assemblies destined to be fabricated into electron discharge tubes for convenience in processin z, transferring and storing such mount assemblies.

An object of the present invention is the provision of a carrying tray for partial assemblages of electron discharge devices.

. Another object of the present invention is the provision of a tray as aforesaid which is simple to use and inexpensive to construct.

Still another object of the present invention is the provision of a tube mount tray which will hold a large number of mount assemblies for miniature electron discharge devices by contact with the header button of such devices leaving the mount itself free and open for performing such operations as may be required on the mount itself.

The foregoing objects and others which may appear from the following detailed description are accomplished in accordance with an aspect of the present invention by providing on a base structure a number of pairs of opposed channel members, such channels being adapted to receive and embrace the edge of the bottom header of a mount assembly for a miniature electron discharge de vice. Each pair of channels accommodates a column of such devices in a regular columnar array while the columns are arranged, adjacent one another, in an array over the entire tray. The channel members which receive the header button of the mounts are preferably closed at one end by a fixed stop which prevents the mounts from sliding out that end and at the other end by a readily displaceable stop bail. In loading the tray the bail is moved so as to open the ends of the opposed channels whereby the headers may be inserted between the channels. In storing or transporting the trays or for heat treating a tray full of mounts the open ends of the channels are closed by swinging the bail back up into position against the open ends of the channels.

The present invention will be more fully understoodby reference to the following detailed description which is accompanied by a drawing in which Figure 1 illustrates in a perspective view one embodiment of the present invention, while Figure 2 is a partial side elevation of the device of Figure l and Figure 3 is an end elevation of the device of Figure 1 and Figure 41s a partial perspective view of a modifled form of the invention.

The structure shown in Figure 1 includes a base member ID. The base member It}. may be constructed of four flat strips of metal l2, l4, l6 and I8, each having their ends mitered at an an le thus forming a sort of a picture frame arrangement with an open central area 20. The corners of the base frame I 0 are secured together by an le plates 22, screwed, riveted or otherwise secured firmly to the corners of the frame member where the mitered edges abut.

The electron tube mount assembly, as shown in Figure 2, includes the mount proper 24, which is supported on leads 26 passing through a wafer such as glass bottom header 28. The lower ends of leads 26 beneath the header 2e may serve as contact prongs for insertion into a conventional socket with which the tube when completed is adapted to be associated. The mount assembly is adapted to be inserted into a glass bulb having a top tubulation. The edge of the bulb is then fused to the edge of header 28 to form a hermetic seal to maintain a vacuum within the bulb. The mount assembly as shown in Figure 2, after being assembled, may require transporting to another location in the manufacturing plant or it may be required that it be stored for a considerable period of time before being used. Alternatively, washing operations may be required to remove oil and grease handling during fabrication or it may be required that the mounts be heat treated in an oven. Thus the frame Ill of the tray as so far described is provided with a number of channel members 313 which are spaced apart just far enough so that the header button 28 may be received between a pair of adjacent channels. While only a few channel members are shown in the figures in order to simplify the disclosure of the invention, it should be understood that the entire top surface of the tray is covered by an array of opposed channels whereby a large number of mounts is accommodated in a number of columns. The channels are spaced above the base member to far enough so that the portions of the lead in wires 26 below the header 28 clear the base member to. Where an exhaust tube is provided in the center of header 28, the spacing of channels 30 over base it should be sufiicient to clear the exhaust tubes.

In the form of the invention shown in Figures 1, 2 and 3 the channel members 30 which oppose each other to receive the button header 28 are each constructed of a pair of elongated. thin flat strips of metal 32, 34 separated apart by a washer 35 and supported the proper distance above the base plate I0 by a hollow spacer member 36. All these aforesaid members are fastened together by a long rivet or screw 33 passing through holes in each of the members and through a hole in the base member Hi. All of the channel members are closed at one end by an L-shaped stop member 38 having one leg of the L riveted or The header assemblies 25 may then be loaded into theracks through the other; open fend'of' the channels? When'the carrier or tray has received the desired number of mount assemblies 24, the open end of the channels, facing the viewer in Figure 1, are c osed by swinging-the flat bail member 40 upwardly from its position of rest on the base member I01 pivotingabout'th'epins in hinge members 4i secured to=the baseplate l until the horizontal portion of the bail 40 snaps under and is latchedlunder the springg clips 42.

A somewhat simplified and more inexpensive form of the invention is shown in Figure 4. In this figure the 'base "plate 50 is 'a thin sheet of metal formed into a sha'llow inverted tray. by the dependingflanges 5| extendingaround thefiat portionof the-*pat'e fifl'. In'this' form, the chain he's-which receive the headers of thetube mount. a'ssembly'are formed of U shaped pieces of sheet meta-1&2." Each member 52 has the upperiedges of the U bent away from eachother and then back toward eacH'othe-rto-form smaller u -shaped channels 53 i and 5'4 facing each other across the top of the U'.- The edges of channels 53 and 5t are" spaced apart, just"as were' mem'bers 32- and 34of Fi'gurs 1, 2 and 3 so that- 'the'header mem ber ZB f-th'e'electron -tube mount assembly- 2c may-"be' receive'd' therein. Also,- as before; the

entire top of the base is' c'overed with" an array of hea'der' receiving channelsi' though only one I is shown forclarity. Each of the chann'els as in' 'th'e previous figures;- closed at one end by' an li-shaped'stcp member ss "and at'the' other by a sw'ihgable bail member 401 In this modificationa'-snap toggle action ass'uringthat the bail 40 rests in eitherfls=upper "or lower positions is pro- Figure 4; securely against the-base plate ure shown'a's though it were balanced in the deadcenter position in" whicli spri'ng 5'8 has-*no effect in turning it on'e wayor'the-other;

Since the 1 tra'ymay have to" resist con'siderable he'at' during baking operations or strong cleaning solutions; it' is preferred that the entire traybe fabricated 'from'a highly"resistant metal'such as stainless steel. For convenience in loading and unloading-said tray from-baking ovens-and so forth; a hole fill' ma'ybe providedin thebase plate to' receive' a" handling hook.

While I have shown and. particularly describeds'everal modifications ofthe present invention, it sh'ould be distinctly understoo'd that my in'vention is'not limited thereto butthat modifications and alterationswithin the scope of the'invention maybem'a'de.

What I claim is:

I 1. An" electron tube mount trayincluding' asubstantially fiat base member and anumber of" mount assembly' receiving racks parallel t y'sa d base member and arrayed across the base member, each of said racks including a pair of flanged channel devices with the lowermost flanges of the channel i'devices above therlevel of 'theebase member with an unobstructed space th'erebetween extending to the base level and spaced apart and having the open sides of said channels facing each otherto receive and embrace the edges of a disc like member associated with said mounts whereby pins=of said mountsi-may extend into said space,

azstopyjmemberclosing all of said racks at one end'and'a'single bail member pivoted on said base-memberiandr'adapted to be swung into alignmentwithall of the channels in said racks at the other'en'dsof the channels whereby said disc like members are retained in-said channels.

2T An' electron: tube mount: tray including; a substantially flat base *memb erand 'a numbezrrofl mount: assembly receivingrracks. parallel? to said base member and arrayed across the baseememei bergeach of'sa'id :racksi including .axpair; of ichaneneI devices with: the lowermost; flanges: ofzjthe channel devices above the-.levelvof the'base memz-i ber withi an unobstructed spacetherebetWeemextendingltottheibase leveland spaced apartia-nd" having the open sidest'rofssaidzchannels. facing-1 eachciothen to receive and :embrace'wtlie edges 10f. a. discttlike member: associated with said mounts; whereby pins of said mounts: may *extndointo said space; said 'racks zbeingclosedrattoneend;a single bail membez'. pivoted: on said: bases member :to: swing'along an axis parallel torsaid base-member. into "alignment with" all-.of the; channels: in? said: racksiat the others-ends'soft.thevchannels whereby," said disclikemembers tare retainedrin saidzchane nels-randmeansforclockingzisaid bail' against said. racks. I

3. Au mount traysvincludinga as base member carryingranarray. off-parallel; headerbutton-zree ceiving: channels parallel -tov and: spaced: above saidtbase :member; .said: channels..comprisinga'ai numbersofi U-shapedwmembers:having' their upper; edges formedintogroovesispacediaboverithe bate tomrof' the channel andwhaving their ropen sides opposing-:on'e: another across the' channel; the.

grooves being; adapted: to:- receivewandc embrace onlythe-rimrof'azdisc shaped-member, saidrchana nelsbeing closed'at one end, andabail pivotedtO. sa-i'dwbaseand adapted-to be swungintowalignment;

V With saidrchannels for closing theirrother' ends,

against saidwends on-against saidatabs.

CHARLESR'; MI'IZCHELIe.

References Cited. inthe file ofithisipatenti;

UNITED STA EES BA'I EN'IESL Number Name Date* 278161 McKee May-'22; 1883 9291045" Stewart July 27,1909" 1",080',2'75 Gilbert" Dec; 2, 19-13"- 1',365,-9W5" F'olmer Jan. 1'921' 1,410,410 Schulz Mar. 21; 1922 126051188 Hubbard Nov. 2; 1926 1995,13!) Read Mar: 19', 1935 2,057,946 Harris Oct. 20; 1936 2,236,876 Jablon Apra l; 1941' 2264 161 Hammer Nov; 25; 1941 2,294,021 Brown Aug. 25;- 1942 2,322,368 Eacey June=223 1943 $421,956 McComb Jime l-fii 194.!

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US278161 *Nov 17, 1882May 22, 1883 Rack for graduated glass measures
US929045 *May 31, 1907Jul 27, 1909Stewart Iron Works CompanyFence-assembling apparatus.
US1080275 *Nov 6, 1912Dec 2, 1913American Multigraph CoDevice for locking lines of type.
US1365975 *Aug 2, 1920Jan 18, 1921Eastman Kodak CoLoading device for cut films
US1410410 *Jan 13, 1920Mar 21, 1922Automotive Radiator Machine CoRadiator-repair machine
US1605188 *Apr 3, 1922Nov 2, 1926 Pbinting machine
US1995130 *Dec 3, 1931Mar 19, 1935Read Worth GPrinting device
US2057946 *Sep 3, 1935Oct 20, 1936Frank L HodgesSanitary milk protector
US2236876 *Mar 30, 1940Apr 1, 1941Jablon Charles WApparatus for assembling venetian blinds
US2264161 *Nov 3, 1938Nov 25, 1941United Metal Box Co IncMethod of assembling venetian blinds
US2294021 *Jun 21, 1940Aug 25, 1942William R WileyFixture for attaching clips in moldings
US2322368 *Sep 2, 1942Jun 22, 1943Terry S LaceyMultitemplate wall assembly bench
US2421956 *Jan 29, 1944Jun 10, 1947 Manufacture of propeller blades
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3403900 *Oct 21, 1966Oct 1, 1968Siks Mfg IncAdjustable soldering and assembly aid
US5417691 *Apr 15, 1993May 23, 1995Hayhurst; John O.Apparatus and method for manipulating and anchoring tissue
US5601557 *Jun 12, 1991Feb 11, 1997Hayhurst; John O.Anchoring and manipulating tissue
US5647874 *Jun 7, 1995Jul 15, 1997John O. HayhurstAnchoring and manipulating tissue
US6146406 *Feb 12, 1998Nov 14, 2000Smith & Nephew, Inc.Bone anchor
US6656182Apr 18, 1995Dec 2, 2003John O. HayhurstTissue manipulation
US7601165Sep 29, 2006Oct 13, 2009Biomet Sports Medicine, LlcMethod and apparatus for forming a self-locking adjustable suture loop
US7608092Oct 27, 2009Biomet Sports Medicince, LLCMethod and apparatus for performing meniscus repair
US7608098Nov 9, 2004Oct 27, 2009Biomet Sports Medicine, LlcBone fixation device
US7658751Feb 9, 2010Biomet Sports Medicine, LlcMethod for implanting soft tissue
US7749250Jul 6, 2010Biomet Sports Medicine, LlcSoft tissue repair assembly and associated method
US7857830Oct 9, 2007Dec 28, 2010Biomet Sports Medicine, LlcSoft tissue repair and conduit device
US7905903Nov 6, 2007Mar 15, 2011Biomet Sports Medicine, LlcMethod for tissue fixation
US7905904Mar 15, 2011Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US7909851Mar 22, 2011Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US7914539Dec 5, 2005Mar 29, 2011Biomet Sports Medicine, LlcTissue fixation device
US7959650Jun 14, 2011Biomet Sports Medicine, LlcAdjustable knotless loops
US8034090Mar 21, 2006Oct 11, 2011Biomet Sports Medicine, LlcTissue fixation device
US8088130May 29, 2009Jan 3, 2012Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to a bone
US8118836Aug 22, 2008Feb 21, 2012Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to a bone
US8128658Aug 22, 2008Mar 6, 2012Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to bone
US8137382Aug 22, 2008Mar 20, 2012Biomet Sports Medicine, LlcMethod and apparatus for coupling anatomical features
US8221454Oct 27, 2009Jul 17, 2012Biomet Sports Medicine, LlcApparatus for performing meniscus repair
US8231654May 6, 2011Jul 31, 2012Biomet Sports Medicine, LlcAdjustable knotless loops
US8251998Aug 28, 2012Biomet Sports Medicine, LlcChondral defect repair
US8273106Dec 22, 2010Sep 25, 2012Biomet Sports Medicine, LlcSoft tissue repair and conduit device
US8292921Mar 11, 2011Oct 23, 2012Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US8298262Jun 22, 2009Oct 30, 2012Biomet Sports Medicine, LlcMethod for tissue fixation
US8303604Sep 30, 2009Nov 6, 2012Biomet Sports Medicine, LlcSoft tissue repair device and method
US8317825Apr 7, 2009Nov 27, 2012Biomet Sports Medicine, LlcSoft tissue conduit device and method
US8337525Mar 11, 2011Dec 25, 2012Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US8343227May 27, 2010Jan 1, 2013Biomet Manufacturing Corp.Knee prosthesis assembly with ligament link
US8361113Jun 22, 2009Jan 29, 2013Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to a bone
US8409253Apr 2, 2013Biomet Sports Medicine, LlcSoft tissue repair assembly and associated method
US8500818May 27, 2010Aug 6, 2013Biomet Manufacturing, LlcKnee prosthesis assembly with ligament link
US8506597Oct 25, 2011Aug 13, 2013Biomet Sports Medicine, LlcMethod and apparatus for interosseous membrane reconstruction
US8551140Jul 13, 2011Oct 8, 2013Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to bone
US8562645May 2, 2011Oct 22, 2013Biomet Sports Medicine, LlcMethod and apparatus for forming a self-locking adjustable loop
US8562647Oct 29, 2010Oct 22, 2013Biomet Sports Medicine, LlcMethod and apparatus for securing soft tissue to bone
US8574235May 19, 2011Nov 5, 2013Biomet Sports Medicine, LlcMethod for trochanteric reattachment
US8597327Nov 3, 2010Dec 3, 2013Biomet Manufacturing, LlcMethod and apparatus for sternal closure
US8608777Oct 21, 2011Dec 17, 2013Biomet Sports MedicineMethod and apparatus for coupling soft tissue to a bone
US8632569Dec 20, 2012Jan 21, 2014Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US8652171May 2, 2011Feb 18, 2014Biomet Sports Medicine, LlcMethod and apparatus for soft tissue fixation
US8652172Jul 6, 2011Feb 18, 2014Biomet Sports Medicine, LlcFlexible anchors for tissue fixation
US8672968Feb 8, 2010Mar 18, 2014Biomet Sports Medicine, LlcMethod for implanting soft tissue
US8672969Oct 7, 2011Mar 18, 2014Biomet Sports Medicine, LlcFracture fixation device
US8721684Mar 5, 2012May 13, 2014Biomet Sports Medicine, LlcMethod and apparatus for coupling anatomical features
US8771316Mar 5, 2012Jul 8, 2014Biomet Sports Medicine, LlcMethod and apparatus for coupling anatomical features
US8771352May 17, 2011Jul 8, 2014Biomet Sports Medicine, LlcMethod and apparatus for tibial fixation of an ACL graft
US8777956Aug 16, 2012Jul 15, 2014Biomet Sports Medicine, LlcChondral defect repair
US8801783May 27, 2010Aug 12, 2014Biomet Sports Medicine, LlcProsthetic ligament system for knee joint
US8840645Feb 17, 2012Sep 23, 2014Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to a bone
US8900314Dec 19, 2012Dec 2, 2014Biomet Manufacturing, LlcMethod of implanting a prosthetic knee joint assembly
US8932331Mar 5, 2012Jan 13, 2015Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to bone
US8936621Nov 3, 2011Jan 20, 2015Biomet Sports Medicine, LlcMethod and apparatus for forming a self-locking adjustable loop
US8968364May 17, 2011Mar 3, 2015Biomet Sports Medicine, LlcMethod and apparatus for fixation of an ACL graft
US8998949Aug 16, 2006Apr 7, 2015Biomet Sports Medicine, LlcSoft tissue conduit device
US9005287Nov 4, 2013Apr 14, 2015Biomet Sports Medicine, LlcMethod for bone reattachment
US9017381Apr 10, 2007Apr 28, 2015Biomet Sports Medicine, LlcAdjustable knotless loops
US9078644Mar 8, 2010Jul 14, 2015Biomet Sports Medicine, LlcFracture fixation device
US9149267Nov 10, 2011Oct 6, 2015Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to a bone
US9173651Oct 22, 2012Nov 3, 2015Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US9216078May 8, 2013Dec 22, 2015Biomet Sports Medicine, LlcMethod and apparatus for tibial fixation of an ACL graft
US9259217Jan 3, 2012Feb 16, 2016Biomet Manufacturing, LlcSuture Button
US9271713Nov 14, 2011Mar 1, 2016Biomet Sports Medicine, LlcMethod and apparatus for tensioning a suture
US9314241Feb 1, 2013Apr 19, 2016Biomet Sports Medicine, LlcApparatus for coupling soft tissue to a bone
US9357991Dec 19, 2012Jun 7, 2016Biomet Sports Medicine, LlcMethod and apparatus for stitching tendons
US9357992Feb 1, 2013Jun 7, 2016Biomet Sports Medicine, LlcMethod for coupling soft tissue to a bone
US9370350Mar 8, 2013Jun 21, 2016Biomet Sports Medicine, LlcApparatus for coupling soft tissue to a bone
US9381013Mar 8, 2013Jul 5, 2016Biomet Sports Medicine, LlcMethod for coupling soft tissue to a bone
US9402621Sep 24, 2012Aug 2, 2016Biomet Sports Medicine, LLC.Method for tissue fixation
US9414833Feb 14, 2013Aug 16, 2016Biomet Sports Medicine, LlcSoft tissue repair assembly and associated method
US9414925Aug 5, 2013Aug 16, 2016Biomet Manufacturing, LlcMethod of implanting a knee prosthesis assembly with a ligament link
US20060189993 *Apr 20, 2006Aug 24, 2006Arthrotek, Inc.Soft tissue conduit device
US20060190042 *Feb 3, 2006Aug 24, 2006Arthrotek, Inc.Tissue repair assembly
US20060247642 *Mar 21, 2006Nov 2, 2006Stone Kevin TTissue fixation device
US20060282085 *Aug 16, 2006Dec 14, 2006Arthrotek, Inc.Soft tissue conduit device
US20070185532 *Feb 3, 2006Aug 9, 2007Arthrotek, Inc.Soft tissue repair assembly and associated method
US20080027446 *Oct 9, 2007Jan 31, 2008Biomet Sports Medicine, Inc.Soft Tissue Repair and Conduit Device
US20080065114 *Nov 6, 2007Mar 13, 2008Biomet Sports Medicine, Inc.Method for Tissue Fixation
US20080082127 *Sep 29, 2006Apr 3, 2008Arthrotek, Inc.Method for implanting soft tissue
US20080082128 *Sep 29, 2006Apr 3, 2008Arthrotek, Inc.Method and apparatus for forming a self-locking adjustable suture loop
US20080140092 *Jan 15, 2008Jun 12, 2008Stone Kevin TSoft tissue repair device and associated methods
US20080140093 *Jan 15, 2008Jun 12, 2008Stone Kevin TSoft tissue repair device and associated methods
US20090054928 *Aug 22, 2008Feb 26, 2009Biomet Sports Medicine, LlcMethod and apparatus for coupling anatomical features
US20090062854 *Aug 22, 2008Mar 5, 2009Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to bone
US20090082805 *Aug 22, 2008Mar 26, 2009Biomet Sports Medicine, LlcAdjustable knotless loops
US20090192468 *Jul 30, 2009Biomet Sports Medicine, LlcSoft tissue conduit device and method
US20090306711 *Dec 10, 2009Biomet Sports Medicine, LlcMethod for Tissue Fixation
US20090318961 *Jun 22, 2009Dec 24, 2009Biomet Sports Medicine,LlcMethod and Apparatus for Coupling Soft Tissue to a Bone
US20100042114 *Feb 18, 2010Biomet Sports Medicine, LlcApparatus for Performing Meniscus Repair
US20100211075 *Aug 19, 2010Biomet Sports Medicine, LlcFracture Fixation Device
US20100268275 *Jul 1, 2010Oct 21, 2010Biomet Sports Medicine, LlcSoft Tissue Repair Assembly and Associated Method
US20100305698 *May 27, 2010Dec 2, 2010Biomet Manufacturing Corp.Knee Prosthesis Assembly With Ligament Link
US20100305709 *Dec 2, 2010Biomet Manufacturing Corp.Knee Prosthesis Assembly With Ligament Link
US20110160767 *Jun 30, 2011Biomet Sports Medicine, LlcSoft Tissue Repair Device and Associated Methods
US20110160768 *Jun 30, 2011Biomet Sports Medicine, LlcSoft Tissue Repair Device and Associated Methods
US20110185560 *Aug 4, 2011Qioptiq Photonics Gmbh & Co. KgMethod for producing an objective
US20110213416 *Sep 1, 2011Biomet Sports Medicine, LlcAdjustable Knotless Loops
US20110218625 *Sep 8, 2011Biomet Sports Medicine, LlcMethod and Apparatus for Fixation of an ACL Graft
USRE43143Dec 2, 2005Jan 24, 2012Hayhurst John OTissue manipulation
Classifications
U.S. Classification269/40, 269/305, 269/270, 269/319, 269/152, 248/311.2
International ClassificationH01J9/46
Cooperative ClassificationH01J2893/0096, H01J9/46
European ClassificationH01J9/46