CA1115404A - Electronic component cabinet - Google Patents
Electronic component cabinetInfo
- Publication number
- CA1115404A CA1115404A CA363,800A CA363800A CA1115404A CA 1115404 A CA1115404 A CA 1115404A CA 363800 A CA363800 A CA 363800A CA 1115404 A CA1115404 A CA 1115404A
- Authority
- CA
- Canada
- Prior art keywords
- cover
- printed circuit
- circuit boards
- base member
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/02—Arrangements of circuit components or wiring on supporting structure
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/16—Mounting supporting structure in casing or on frame or rack on hinges or pivots
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
ELECTRONIC COMPONENT CABINET
ABSTRACT OF THE DISCLOSURE
A rack mounted assembly adapted to facilitate compact mounting and yet easy access to printed circuit boards retained therein comprising a plurality of cabinets mounted in a horizontal array, each of the cabinets comprising a base member, a cover having an outer panel and a pair of upper and lower legs orthogonal to the outer panel, the cover being hinged so as to rotate about a vertical axis and to swing away from the base member, apparatus for mounting a group of plug-in printed circuit boards in parallel relationship within each cover whereby one end of the group is swung away from the base member with the cover into an open position so as to clear an adjacent cabinet within the horizontal array, and apparatus for retaining each of the covers in position parallel to the base members or in open position, to allow removal of one or more printed circuit boards of the group without interference with said adjacent cabinet of the array.
ABSTRACT OF THE DISCLOSURE
A rack mounted assembly adapted to facilitate compact mounting and yet easy access to printed circuit boards retained therein comprising a plurality of cabinets mounted in a horizontal array, each of the cabinets comprising a base member, a cover having an outer panel and a pair of upper and lower legs orthogonal to the outer panel, the cover being hinged so as to rotate about a vertical axis and to swing away from the base member, apparatus for mounting a group of plug-in printed circuit boards in parallel relationship within each cover whereby one end of the group is swung away from the base member with the cover into an open position so as to clear an adjacent cabinet within the horizontal array, and apparatus for retaining each of the covers in position parallel to the base members or in open position, to allow removal of one or more printed circuit boards of the group without interference with said adjacent cabinet of the array.
Description
4~4 01 This invention relates to a cabinet for housing electro 02 nic components such as printed circuit boards and is particularly 03 adapted to allow easy access to and removal of the printed cir-04 cuit boards when a plurality of such cabinets are closely mounted 05 on a rack.
06 Rack-mounted equipment which utilize plug-in printed 07 circuit boards or similar components generally mount the printed 08 circuit boards vertically with their edges toward the front of 09 the rack. This allows easy access to the boards, since they can be removed simply by pu~ling them forward after unlatching what-11 ever locking mechanism might be used.
12 While such equipment has been successfully used in the 13 past, there have remained a number of associated problems. For 14 example, the depth of the frame must be sufficient to contain the printed circuit boards front-to-back. The frame itself must 16 therefore carry the entire printed circuit board (or an auxil-17 liary cabinet of similar depth) as well as the backplane wiring.
18 Further, the number of boards which can be carried on a 19 particular standard size rack face area is limited by the thick-ness of the printed circuit boards including their components 21 with additional safety allowance to ensure that short circuits 22 between adjacent boards do not occur. The number of circuit 23 boards which can be carried on a rack is therefore a function of 24 their width and component thickness.
The present invention is directed to a cabinet for 26 housing components such as printed circuit boards which allows 27 the printed circuit boards to be stacked parallel to the front of 28 the frame. The number of printed circuit boards which can be 29 accommodated therefore becomes a function of how far forward of the frame is tolerable for a stack. While a number of such cab-31 inets mounted to the front of a frame would be expected to cause 0~ ' 01 an access problem, the inventive cabinet allows full access to 02 the printed circuit boards for their removal, the use of printed 03 circuit board extenders etc.
04 As a further advantage resulting from this invention, 05 the frame for mounting the inventive cabinet need only be 06 comprised of means for mounting the cabinet, and a wiring 07 backplane. A considerably narrower, and therefore less expensive 08 frame can be used than previously.
09 Further, with all of the printed circuit boards in position, the preferred embodiment of the invention provides a 11 fully protective enclosure for the boards from dust or accidental 12 jarring, and it further presents a neat and unobtrusive appear-13 ance.
14 The invention, in general, is a rack mounted assembly adapted to facilitate compact mounting and yet easy access to 16 printed circuit boards retained therein comprising a plurality of 17 cabinets mounted in a horizontal array, each of the cabinets 18 comprising a base member, a cover having an outer panel and a 19 pair of upper and lower legs orthogonal to the outer panel, the cover being hinged so as to rotate about a vertical axis and to 21 swing away from the base member, apparatus for mounting a group 22 of plug-in printed circuit boards in parallel relationship within 23 each cover whereby one end of the group is swung away from the ~24 base member with the cover into an open position so as to clear an adjacent cabinet within the horizontal array, and apparatus 26 for retaining each of the covers in position parallel to the base 27 members or in open position, to allow removal of one or more 28 printed circuit boards of the group without interference with 29 said adjacent cabinet of the array.
A better understanding of the invention will be 31 obtained by reference to the detailed description below, and to 32 the following figures:
--- lllS~04 01 Figure 1 is a perspective view of the housing in open 02 po~ition, 03 Figure 2 is a perspective view of the housing in clo~ed 04 po8ition, 05 2a lllS~O~
01 Figure 3 is a perspective view of a plurality of the 02 housings as they would appear when mounted on a rack, 03 Figure 4 is a schematic plan view of the cover latch 04 for the housing with the cover in open position, and 05 Figure 5 is a schematic plan view of the cover latch 06 for the housing with the cover in closed position.
07 Turning first to figures 1, 2, 4 and 5, the invention 08 is comprised of a base member 1. The base member typically has 09 means for mounting it on a rack such as threaded studs, screw holes, etc., which means are well-known and thus will not be des-11 cribed further.
12 A generally U-shaped cover member 2 is comprised of a 13 pair of legs 3 and an outer surface 4.
14 The cover member i~ hinged at its bottom end adjacent the base. A manner of hinging which is preferred is to provide a 16 pair of lips 5 of the base member (only one of which is shown) 17 overlapping the cover, although the invention is not restricted 18 to this form of hinge. The lips are rotatably pinned utilizing 19 rivets 6 or the like, to allow the cover to swing thereabout.
Clearly the cover member 2 can swing into a position 21 against the base 1 as shown in Figure 2, or away from the base as 22 shown in Figure 1.
23 Means is also provided for holding printed circuit 24 boards or the like in position. A pair of parallel channel members 7 (only the bottom one of which is visible in Figure 1) 26 containing slots adequate to retain the printed circuit board 27 thickness are disposed on the opposite inside surface of the legs 28 of the cover member, parallel and facing each other. A second 29 channel member 8 is also shown in Figure 1 the number of channel members to be utilized is determined by the number of printed 31 circuit boards to be housed within the cover member in parallel 01 disposition. For example, there may be five or more sets of 02 channel members utilized.
03 A connector to mate with the printed circuit board or 04 matin~ connector is fixed to the end of the cover member opposite 05 the opell end between each pair of opposing channel members.
06 A printed circuit board 9 is slid into the opposing 07 Rlots within channel members 7, and is held in position. As it 08 is pushed into the cover member and into engagemen~ with the con-09 nector at the other end of the channel members, the front of the printed circuit board moves entirely within the cover member 2.
11 Thus a plurality of printed circuit boards can be loca-12 ted in parallel relationship within the cover member. r 13 Once all of the printed circuit boards are in location, 14 the cover member can be moved into disposition against the base member, thus closing it.
16 Turning to Figure 3, a plurality of the above-described 17 housings 10 are shown mounted on a rack. One of the housings 11 18 has been swung into its open position and it is clear that access 19 may be had to the printed circuit boards contained therein. One of the printed circuit boards 12 is shown extending from the open 21 housing, as it would appear as it is being removed. If desired, 22 a printed circuit board extender can be utilized, to allow full 23 servicing of the apparatus if needed while the printed circuit 24 board remains connected in the rack.
It should be noted that to accommodate more printed cir 26 cuit boards, the housing legs need merely be made longer thus 27 enlarging the housing. Additional channel pairs for holding 28 printed circuit boards would be utilized, and additional printed 29 circuit boards thus could be located in parallel with the others within the housing.
31 Returning to Figures 1 and 2, an end cover or end flap :' ~. ..
ll~S404 01 13 is attached orthogonally to the base 1 adjacent the open end of 02 the cover member 2. End flap 13 is of similar size as the opening 03 formed by the cover member when in position against the base member 04 1, and therefore protects the interior components and forms an end 05 to the entire enclosure when the cover member is closed. The oppo-06 site end of the cover member may remain open to allow wiring to 07 extend from the aforenoted connectors, or can be closed, with access 08 holes being located in the cabinet for egress of connector wires.
09 Preferably the end flap 13 may also contain slots 14 to allow air to circulate, if protection from dust and accidental 11 jarring is not considered to be a problem.
12 Instead of the end flap, or as part thereof, a guide can be 13 provided attached to the base, to provide alignment and prevent sag 14 of the cover member.
In a major advantage of the invention, the cabinet includes 16 means for latching the cover member in one of the two positions.
17 The preferred form of the latch is comprised of a wire spring which 18 is biased within a slot as will be described below with reference to 19 Figures 4 and 5, but which is also visible in Figures 1 and 2.
One of the legs of the cabinet contains a slot 15 which 21 runs parallel to the end of the cover member. The ends of the slot 22 15 are formed into extensions 16 and 17. While the slot extensions 23 are shown extenaing in opposite directions in the figures, they need 24 not do so, although it is preferred that they do.
A spring wire 18 extends outwardly from the base 1. It 26 can be fastened using well Xnown means such as being swaged into a 27 hole, but must extend stiffly outwardly within the housing opposite 28 the slot 15.
29 The end of the spring wire 18 is turned 90 degrees to form a spring extension 19, which extends into slot 15. Further, the 31 spring wire 18 is biased in such manner that the spring extension ~llS404 01 falls into slot extensions 16 or 17 when the cover is closed or 02 open.
03 In case the slot extensions both are in the same direc-04 tion, the spring 18 should be biased in that direction. To 05 release the cover, the spring wire is pushed into the plane of 06 slot 15 whereupon the cover member can be moved to its closed or 07 opened positions, allowing the spring extension to slide within 08 the slot. At its extreme position, the bias of the spring wire 09 18 causes the spring extension 19 to latch into the corresponding slot extension latching the cover into position.
11 In the preferred embodiment shown in large size in 12 Figure 4 and 5, the slot extensions extend in opposite direc-13 tions. It is preferred that the spring 18 be biased such that 14 when the cover member 2 is in an intermediate position, that is with the spring extension 19 midway between the slot extensions 16 16 and 17 within slot 15, that there be no sideways pressure on 17 the slot 15 by the spring extension. As the cover member closes 18 toward the base member 1, and the end of the slot 15 moves toward 19 the plane of base member 1 the spring extension 19 is pushed in the direction of the end of the base member. This imparts a 21 bending force on spring 18, and consequently when the cover 22 member ~ is in position against base member 1, which places the 23 spring extension 19 opposite slot extension 17, the spring 24 extension 19 slips into slot extension 17 by the force of the tension built up in spring wire 18.
26 To release the cover, spring extension 19 is manually 27 pushed to a position in the plane of slot 15. Cover member 2 is 28 then swung open, causing spring extension 19 to slide within slot 29 15. At a central position within slot 15, there is no discer-nible bias in spring wire 18. As the cover member swings further 31 outwardly, the end of slot 15 adjacent slot extension 16 moves 40~
01 away from the end of base member 1 in respect of the plane 02 thereof. Accordingly, spring wire 18 is pushed in the opposite 03 direction than previously, imparting tension thereto. As the 04 cover member 2 swings to its open position, it is limited by the 05 spring extension 19 meeting the end of slot 15. Due to the ten-06 sion built up within spring wire 18, spring extension 19 latches 07 into slot extension 16. The cover member 2 is thus held in its 08 open position.
09 To release the cover member again, spring extension 19 is manually moved into the plane of slot 15 allowing movement of ~11 the cover member 2 toward base member 1, as described above.
12 The cover member thus can be latched in either of two 13 positions, closed or open. In the closed, or operating position 14 the equipment takes up minimum space while in the open position, printed circuit boards or other plug in components can be removed 16 or inserted as described earlier.
17 While the above has described the preferred embodiment 18 of the invention, a person skilled in the art of understanding 19 ~ne invention may now conceive of variations or other embodi-ments. All are considered within the sphere and scope of this 21 invention as defined in the appended claims.
06 Rack-mounted equipment which utilize plug-in printed 07 circuit boards or similar components generally mount the printed 08 circuit boards vertically with their edges toward the front of 09 the rack. This allows easy access to the boards, since they can be removed simply by pu~ling them forward after unlatching what-11 ever locking mechanism might be used.
12 While such equipment has been successfully used in the 13 past, there have remained a number of associated problems. For 14 example, the depth of the frame must be sufficient to contain the printed circuit boards front-to-back. The frame itself must 16 therefore carry the entire printed circuit board (or an auxil-17 liary cabinet of similar depth) as well as the backplane wiring.
18 Further, the number of boards which can be carried on a 19 particular standard size rack face area is limited by the thick-ness of the printed circuit boards including their components 21 with additional safety allowance to ensure that short circuits 22 between adjacent boards do not occur. The number of circuit 23 boards which can be carried on a rack is therefore a function of 24 their width and component thickness.
The present invention is directed to a cabinet for 26 housing components such as printed circuit boards which allows 27 the printed circuit boards to be stacked parallel to the front of 28 the frame. The number of printed circuit boards which can be 29 accommodated therefore becomes a function of how far forward of the frame is tolerable for a stack. While a number of such cab-31 inets mounted to the front of a frame would be expected to cause 0~ ' 01 an access problem, the inventive cabinet allows full access to 02 the printed circuit boards for their removal, the use of printed 03 circuit board extenders etc.
04 As a further advantage resulting from this invention, 05 the frame for mounting the inventive cabinet need only be 06 comprised of means for mounting the cabinet, and a wiring 07 backplane. A considerably narrower, and therefore less expensive 08 frame can be used than previously.
09 Further, with all of the printed circuit boards in position, the preferred embodiment of the invention provides a 11 fully protective enclosure for the boards from dust or accidental 12 jarring, and it further presents a neat and unobtrusive appear-13 ance.
14 The invention, in general, is a rack mounted assembly adapted to facilitate compact mounting and yet easy access to 16 printed circuit boards retained therein comprising a plurality of 17 cabinets mounted in a horizontal array, each of the cabinets 18 comprising a base member, a cover having an outer panel and a 19 pair of upper and lower legs orthogonal to the outer panel, the cover being hinged so as to rotate about a vertical axis and to 21 swing away from the base member, apparatus for mounting a group 22 of plug-in printed circuit boards in parallel relationship within 23 each cover whereby one end of the group is swung away from the ~24 base member with the cover into an open position so as to clear an adjacent cabinet within the horizontal array, and apparatus 26 for retaining each of the covers in position parallel to the base 27 members or in open position, to allow removal of one or more 28 printed circuit boards of the group without interference with 29 said adjacent cabinet of the array.
A better understanding of the invention will be 31 obtained by reference to the detailed description below, and to 32 the following figures:
--- lllS~04 01 Figure 1 is a perspective view of the housing in open 02 po~ition, 03 Figure 2 is a perspective view of the housing in clo~ed 04 po8ition, 05 2a lllS~O~
01 Figure 3 is a perspective view of a plurality of the 02 housings as they would appear when mounted on a rack, 03 Figure 4 is a schematic plan view of the cover latch 04 for the housing with the cover in open position, and 05 Figure 5 is a schematic plan view of the cover latch 06 for the housing with the cover in closed position.
07 Turning first to figures 1, 2, 4 and 5, the invention 08 is comprised of a base member 1. The base member typically has 09 means for mounting it on a rack such as threaded studs, screw holes, etc., which means are well-known and thus will not be des-11 cribed further.
12 A generally U-shaped cover member 2 is comprised of a 13 pair of legs 3 and an outer surface 4.
14 The cover member i~ hinged at its bottom end adjacent the base. A manner of hinging which is preferred is to provide a 16 pair of lips 5 of the base member (only one of which is shown) 17 overlapping the cover, although the invention is not restricted 18 to this form of hinge. The lips are rotatably pinned utilizing 19 rivets 6 or the like, to allow the cover to swing thereabout.
Clearly the cover member 2 can swing into a position 21 against the base 1 as shown in Figure 2, or away from the base as 22 shown in Figure 1.
23 Means is also provided for holding printed circuit 24 boards or the like in position. A pair of parallel channel members 7 (only the bottom one of which is visible in Figure 1) 26 containing slots adequate to retain the printed circuit board 27 thickness are disposed on the opposite inside surface of the legs 28 of the cover member, parallel and facing each other. A second 29 channel member 8 is also shown in Figure 1 the number of channel members to be utilized is determined by the number of printed 31 circuit boards to be housed within the cover member in parallel 01 disposition. For example, there may be five or more sets of 02 channel members utilized.
03 A connector to mate with the printed circuit board or 04 matin~ connector is fixed to the end of the cover member opposite 05 the opell end between each pair of opposing channel members.
06 A printed circuit board 9 is slid into the opposing 07 Rlots within channel members 7, and is held in position. As it 08 is pushed into the cover member and into engagemen~ with the con-09 nector at the other end of the channel members, the front of the printed circuit board moves entirely within the cover member 2.
11 Thus a plurality of printed circuit boards can be loca-12 ted in parallel relationship within the cover member. r 13 Once all of the printed circuit boards are in location, 14 the cover member can be moved into disposition against the base member, thus closing it.
16 Turning to Figure 3, a plurality of the above-described 17 housings 10 are shown mounted on a rack. One of the housings 11 18 has been swung into its open position and it is clear that access 19 may be had to the printed circuit boards contained therein. One of the printed circuit boards 12 is shown extending from the open 21 housing, as it would appear as it is being removed. If desired, 22 a printed circuit board extender can be utilized, to allow full 23 servicing of the apparatus if needed while the printed circuit 24 board remains connected in the rack.
It should be noted that to accommodate more printed cir 26 cuit boards, the housing legs need merely be made longer thus 27 enlarging the housing. Additional channel pairs for holding 28 printed circuit boards would be utilized, and additional printed 29 circuit boards thus could be located in parallel with the others within the housing.
31 Returning to Figures 1 and 2, an end cover or end flap :' ~. ..
ll~S404 01 13 is attached orthogonally to the base 1 adjacent the open end of 02 the cover member 2. End flap 13 is of similar size as the opening 03 formed by the cover member when in position against the base member 04 1, and therefore protects the interior components and forms an end 05 to the entire enclosure when the cover member is closed. The oppo-06 site end of the cover member may remain open to allow wiring to 07 extend from the aforenoted connectors, or can be closed, with access 08 holes being located in the cabinet for egress of connector wires.
09 Preferably the end flap 13 may also contain slots 14 to allow air to circulate, if protection from dust and accidental 11 jarring is not considered to be a problem.
12 Instead of the end flap, or as part thereof, a guide can be 13 provided attached to the base, to provide alignment and prevent sag 14 of the cover member.
In a major advantage of the invention, the cabinet includes 16 means for latching the cover member in one of the two positions.
17 The preferred form of the latch is comprised of a wire spring which 18 is biased within a slot as will be described below with reference to 19 Figures 4 and 5, but which is also visible in Figures 1 and 2.
One of the legs of the cabinet contains a slot 15 which 21 runs parallel to the end of the cover member. The ends of the slot 22 15 are formed into extensions 16 and 17. While the slot extensions 23 are shown extenaing in opposite directions in the figures, they need 24 not do so, although it is preferred that they do.
A spring wire 18 extends outwardly from the base 1. It 26 can be fastened using well Xnown means such as being swaged into a 27 hole, but must extend stiffly outwardly within the housing opposite 28 the slot 15.
29 The end of the spring wire 18 is turned 90 degrees to form a spring extension 19, which extends into slot 15. Further, the 31 spring wire 18 is biased in such manner that the spring extension ~llS404 01 falls into slot extensions 16 or 17 when the cover is closed or 02 open.
03 In case the slot extensions both are in the same direc-04 tion, the spring 18 should be biased in that direction. To 05 release the cover, the spring wire is pushed into the plane of 06 slot 15 whereupon the cover member can be moved to its closed or 07 opened positions, allowing the spring extension to slide within 08 the slot. At its extreme position, the bias of the spring wire 09 18 causes the spring extension 19 to latch into the corresponding slot extension latching the cover into position.
11 In the preferred embodiment shown in large size in 12 Figure 4 and 5, the slot extensions extend in opposite direc-13 tions. It is preferred that the spring 18 be biased such that 14 when the cover member 2 is in an intermediate position, that is with the spring extension 19 midway between the slot extensions 16 16 and 17 within slot 15, that there be no sideways pressure on 17 the slot 15 by the spring extension. As the cover member closes 18 toward the base member 1, and the end of the slot 15 moves toward 19 the plane of base member 1 the spring extension 19 is pushed in the direction of the end of the base member. This imparts a 21 bending force on spring 18, and consequently when the cover 22 member ~ is in position against base member 1, which places the 23 spring extension 19 opposite slot extension 17, the spring 24 extension 19 slips into slot extension 17 by the force of the tension built up in spring wire 18.
26 To release the cover, spring extension 19 is manually 27 pushed to a position in the plane of slot 15. Cover member 2 is 28 then swung open, causing spring extension 19 to slide within slot 29 15. At a central position within slot 15, there is no discer-nible bias in spring wire 18. As the cover member swings further 31 outwardly, the end of slot 15 adjacent slot extension 16 moves 40~
01 away from the end of base member 1 in respect of the plane 02 thereof. Accordingly, spring wire 18 is pushed in the opposite 03 direction than previously, imparting tension thereto. As the 04 cover member 2 swings to its open position, it is limited by the 05 spring extension 19 meeting the end of slot 15. Due to the ten-06 sion built up within spring wire 18, spring extension 19 latches 07 into slot extension 16. The cover member 2 is thus held in its 08 open position.
09 To release the cover member again, spring extension 19 is manually moved into the plane of slot 15 allowing movement of ~11 the cover member 2 toward base member 1, as described above.
12 The cover member thus can be latched in either of two 13 positions, closed or open. In the closed, or operating position 14 the equipment takes up minimum space while in the open position, printed circuit boards or other plug in components can be removed 16 or inserted as described earlier.
17 While the above has described the preferred embodiment 18 of the invention, a person skilled in the art of understanding 19 ~ne invention may now conceive of variations or other embodi-ments. All are considered within the sphere and scope of this 21 invention as defined in the appended claims.
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A rack mounted assembly comprising a plurality of cabinets mounted in a horizontal array, each of the cabinets comprising a base member, a cover having an outer panel and a pair of upper and lower legs orthogonal to the outer panel, the cover being hinged so as to rotate about a vertical axis and to swing away from the base member, means for mounting a group of plug-in printed circuit boards in parallel relationship within each cover whereby one end of the group is swung away from the base member with the cover into an open position so as to clear an adjacent cabinet within the horizontal array, and means for retaining each of the covers in position parallel to the base members or in open position, to allow removal of one or more printed circuit boards of the group without interference with said adjacent cabinet of the array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA363,800A CA1115404A (en) | 1978-05-24 | 1980-10-31 | Electronic component cabinet |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA303,988A CA1103795A (en) | 1978-05-24 | 1978-05-24 | Electronic component cabinet |
| CA363,800A CA1115404A (en) | 1978-05-24 | 1980-10-31 | Electronic component cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1115404A true CA1115404A (en) | 1981-12-29 |
Family
ID=25668709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA363,800A Expired CA1115404A (en) | 1978-05-24 | 1980-10-31 | Electronic component cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1115404A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0415514A2 (en) * | 1989-08-31 | 1991-03-06 | Gec Plessey Telecommunications Limited | A printed wiring board mounting assembly |
-
1980
- 1980-10-31 CA CA363,800A patent/CA1115404A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0415514A2 (en) * | 1989-08-31 | 1991-03-06 | Gec Plessey Telecommunications Limited | A printed wiring board mounting assembly |
| EP0415514A3 (en) * | 1989-08-31 | 1992-01-08 | Gec Plessey Telecommunications Limited | A printed wiring board mounting assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |