CA1054093A - Shelf support structure - Google Patents
Shelf support structureInfo
- Publication number
- CA1054093A CA1054093A CA240,399A CA240399A CA1054093A CA 1054093 A CA1054093 A CA 1054093A CA 240399 A CA240399 A CA 240399A CA 1054093 A CA1054093 A CA 1054093A
- Authority
- CA
- Canada
- Prior art keywords
- standard
- shelf
- web
- display device
- engaging
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F5/00—Show stands, hangers, or shelves characterised by their constructional features
- A47F5/10—Adjustable or foldable or dismountable display stands
- A47F5/12—Tiltable stands
Landscapes
- Display Racks (AREA)
- Supports For Plants (AREA)
- Assembled Shelves (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
INVENTOR
BARRY DAVID BERGER
TITLE
SHELF SUPPORT STRUCTURE
ABSTRACT OF THE DISCLOSURE
A modular self supporting shelf type display device includes a pair of adjustable laterally spaced foot pieces having sockets separably receiving H-column standards having cross webs provided with vertically spaced locking openings. Two or more shelves are supported between the standards and are adjustable between inclined and horizont-al positions. A coupling member is formed at each side edge of each shelf and rockably and slidably engages a respective standard. Each coupling member includes a verticle base plate, V-shaped inner positioning webs whose opposite sections converge to a central throat engaging the standard cross web, V-shaped outer positioning webs spaced from and parallel to the inner webs and engaging the edges of the standard side webs and downwardly open hook elements projecting from the ends of the inner posi-tioning webs. When the shelf is in a selected horizontal or inclined position, a respective pair of opposite inner and outer positioning web sections engage the standard cross and side webs and a pair of hook elements engage cross web opening bottom edges. The positioning webs may be multiple convolute shape.
BARRY DAVID BERGER
TITLE
SHELF SUPPORT STRUCTURE
ABSTRACT OF THE DISCLOSURE
A modular self supporting shelf type display device includes a pair of adjustable laterally spaced foot pieces having sockets separably receiving H-column standards having cross webs provided with vertically spaced locking openings. Two or more shelves are supported between the standards and are adjustable between inclined and horizont-al positions. A coupling member is formed at each side edge of each shelf and rockably and slidably engages a respective standard. Each coupling member includes a verticle base plate, V-shaped inner positioning webs whose opposite sections converge to a central throat engaging the standard cross web, V-shaped outer positioning webs spaced from and parallel to the inner webs and engaging the edges of the standard side webs and downwardly open hook elements projecting from the ends of the inner posi-tioning webs. When the shelf is in a selected horizontal or inclined position, a respective pair of opposite inner and outer positioning web sections engage the standard cross and side webs and a pair of hook elements engage cross web opening bottom edges. The positioning webs may be multiple convolute shape.
Description
.
~os~
The present invention relates generally to improve~
men'ts in display or storage'devices and it relates mOTe particula~ly to an improved adjustable'shelf and standard structure o~ modular construction which may be rapidly assembled or collapsed and in which the shelves are angular-ly and vertically adjustable.
There are numerous applications or easily assembled and collapsed, simple lightweight shelf structures which possess a wide range of adjustment and variation in height, width and shelf arrangement, size and inclination. The structure heretofore proposed and availably possess numeT-ous drawbacks and disadvantages. They are expensive and bulky stTuctures often of unatttractive appearance. Ordin-arily, the shelves are supported from the rear and side9 so as to restrict accessibility and are of little versatil-ity and adaptability and otherwise leave much to be desired.
'It is a principal object of the present invnetion to provide and improved display device. '~.
AnotheT object of *he ~Tesen~ invention is *o provide an improved adjustable shelf structure.
Still another object of the present invention is to provide an improved adjustable shelf structure of modula~
construction in which the overall size of the structure and the arrangement and orientation of the shelves as well as their sizes may be easily varied an~ adjusted. ~iA further object of the present invention is to pro-vide an improved adjustable shelf structure 3 which is ; e~ficient in design and economical in material, but yet is ~ s~rong and desirable.
:`
~` 30 A still further object of the present invention is to provide a structure of the above nature characterized ' - 2 -: , , . , :-. .
lOS40~
by its reIitability, attractive 'appeaTance, ease and con-venience 'of rapid assembly, erection, collapse 'and adjust-ment, its ruggedness~ low cos~ and high'~ersatility and adaptability.
The above an other objects of the present invention will become apparent from a reading of the following description taken in aonjunction with the accompanying drawings, which illustrate preferTed embodiments theTeof.
In a sense, the present inven~ion con~emplates the ' ' provision of an improved modular, shelf type display device comprising at least one verticle standard, a laterally extending shelf member and a coupling member located on t,he shelf member and vertically slidably engaging the standard and limiting the swinging of the shelf about a laterally extendin~ axis between predetermined angles and lncluding means responsive to the positioning of the shelf member at one of the predetermined angles for releasably locking the shelf member in its set position.
According to the preferred embodiment *wo or mora ; ' 20 laterally spaced standards are provided, each standaTd ~ ' ' having its lower end separably nested in a medial socket formed in an adjustable transversely extending foot piece.
Each standaTd is formed of one or more columns of H-shaped ' transverse cross section inter-connacted end to end and having vertically aligned rectangular shaped positioning "
openings formed in the standard crossweb, which extends laterally. Each shelf member has a medially disposed '~
integrally formed coupling member at each end engaging a ~ ;
corTesponding standard, each coupling member including an inner transverse base plate. Laterally outwardly projecting symmet'rically disposed positioning webs OT strips are ~' ~ S~9 3 -located on each base plate, the webs being of shallow ~-shape ~nd including a pair of inner first positioning webs whose apices are directod toward each other and delineate a narrow throat and whose inner edges are spaced from the base plate to deEine slots which engage the standards side walls, A second pair of pos;tioning webs are disposed radially outwardly of and are parallel to the first posi-tioning web. A~hook element having a radially inwardly directed opening is located at an end of each of the first positioning webs. When the shelf is between its predeter-mined angles the shelf is freelyslidably along the standards.
However, when the shelf is at a predetermined position and angle, one of the end sections of each of the positioning webs firmly engages the standard cross web or side wall and the hook elements engage the lower edges of corresponding positioning openings.
The improved display device is rugged, reliable, of great versatility and adaptability, of attractive appearance strong, inexpensive and easy and convenient to assemble~
erect, adjust and collapse.
FiguTe 1 is a front perspective view, partially frag-ment~d, of an assembled display device embodying various - aspects of the present invention, Figure 2 is an enlarged, fragmentary perspective view of the shelf coupling and support standard in a separated condition;
Figure 3 is an enlarged sectional view taken along line 3-3 on Figure l;
Figure 4 is a sectional view taken along line 4-4 in Figure l;
Figure 5 is a sectional view taken along line 5-5 in - 4 ~
' ~154~3 Figure 4;
Figure 6 is a sectional view -taken along line 6-6 in F.igure l;
Figure Y is a sectional view taken along line 7-7 in Figure 6;
Figu~e 8 is a sectional view taken along line 8-8 in Figure 6;
Figure 9 is a sectional view taken along line 9-9 in Figure 1, Figure lOA is a sectional view taken along line 10-10 in Figure l;
FiguTe lOB is a sectional view taken along line lOB-lOB
in Figure 9; , Figure 11 is a sectional view taken along lin~ 11 in ', Figure l; ` '.
Figure 12 is a fragmentary visw taken along line 12-12 in Figure 11;
Figure 13 is a sectional view taken along line 13-13 in Figure 12; ' ;~
FiguTe 14 is a sectional view taken along line 14-14 in Figure l; . . :
Figure 15 is a sectional view taken along line 15-15 in Figure l;
.
Figure 16 is a sectional view taken along line 16-16 ~ .
in Figure l;
Figure 17 is a bottom plan view of the foot piece shown - . in Figure 16; and Figure 18 is a sectional view taken along line 18 18 ~ in Figure 16.
: 30 Referring now to the drawings wl~ich illustrate a :~
preferred embodiment of the present invention, the reference : 5 ~.
- - . - ~ -~O5 ~ ~ 3 numeral lO g~nerally designates the improved display device, which includ~s two or more`standard assemblies 11 and a plurality of shel~es 13 which are individually adjustable in size~ position and orientation. While only two st~ndard assemblies 11 are shown, it should be understood that more such assemblles may be employed and they are regularly laterally spaced as determined by the lengths of the shelves 12, whi`ch are equal to each other. The intermediate stand-ards 11 are common to adjoining pairs of shelves. The number and arrangement of the shelves may likewise be modified.
The various components of the display device may be formed of any suitable material in the conventional manner, for example, extruded aluminum; or, they are advantageously formed of a synthetic organic polymeric resin, such as polysty~ene, polypropylene, ac~ylonitrilebutadiene-styrene tABS) and the liXe.
Figure 1 illustrates various positions and forms of the shelves 12 on standard assemblies 11. Referring to the various shelves in Figure 1 from top to bot~om, the *opmost shelf is in sliding position to locate it anywhele along standard members 13. The second shelf from the top illus-trates the shelf in hori~ontal position with one shelf extender on and the rear extender in exploded position and ~ `
an adjoining fragmentary shelf shown. The next lower shelf ~` is in 45 position with a fron edge guard shown. This posi- -tion allows positive feed of merchandise placed on the shelf when the frontmost item is removed. The bottom shelf is also at a 4S angle with an extender and edge guard mounted. ;~
The standard assemblies 11 each include one or more ~
standard members 13 separably connec*ed end to end and a foot ~ ~
member 14, as best seen in Figures 1 and 16-18. The foot . . ~ . : . ; ..
~ ~ 5 ~ ~ 3 membeT 14 .as seen best .in Figures 16~18, comprises a trans- -versely extending body membeT 16 includi.ng transversely aligned oppositely projecting channel shaped legs 17 medially joined by a ~ertically upwardly enlarged midsec*ion l9.
~ach of the legs 17 includes a horizontal top wall 20 and depending side walls 21~ the top walls 20 joining upwaTdly inwardly inclined top walls 22 of midsection 19 and the side walls21 being joined by the ~erical side walls 23 of mid-section 190 A medial vertically oriented coupling well 24 of square hori~ontal cross section is formed in midsection 19 and is delineated by a bottom wall 26 at the base of midsection 19, slightly downwardly converging front and rea.r walls 27 and the midsection side walls 23. Extending long- -~
itudinally a~ong the inside aces o~ side walls 21 shortly below the top walls 20 are ribs 28 having coplanar top shoul-ders and a transverse rib 29 depends from the underface of ~ :
top wall 20 proximate its outer end. The side walls 21 -.
terminate at the free ends in short depending foot ser.tions ~0.
Z0 Slidably telescoping each oE the channel legs 17 is a nesting open bo~tom channel shaped extension leg 32 which projects beyond the end of the corresponding body leg 17 and is selectively slidable between extended and retTacted posi-tions. Each of the extension legs 32 includes a top wall 33 underlying the corresponding top wall 20 of leg 17 and depending side walls 34 provided along thei~ tops with out-wardly directed pTojections 36 slidably engaging tracks de-fined by the top wall 20 of legs 17 and ribs 28. Longitudi~ :
.. .nally spaced, laterally extending grooves 37 are formed in the top face of channeI top wall 33 and are releasably en- .
gagable by rib 29 of top wall 20 to lock the extension leg . , ~ ~ 5 ~ ~ 3 32 in a prescribed position.
A downwarly open we.Il 38 is formed at the end o-~ each extension leg 32 and is provided at its base with three angulaTly related depending vertical panels 39 p~ovided at their underaces' with bosses,40. ~ ball roller 41 nests in the well 38 and engages the bosses 40 and projects below the well 38, ~he ball 41 being rotat'ably retained in the well 38 by a suitably shaped annulus or washer ~ secured in the open end of well'38.
Referring now *o Figures 1-5, each of the standard ,.' , members 13 includes a single column unit 43 of generally "H"-shaped transverse cross section or two or more axially ~ligned H-column units separably connected end to end by suitable fasteners. Each column unit 43 includes laterally spaced transverse side walls 44 connected by a medial cross '-~, web 46 having formed therein regularly vertically spaced rectangular positioning openings 47~ which extend for the ful~ width of the cross web 46 . Formed on the outside faces of the column side walls 44 along their vertical edges and ~ ~ ' '` 20 medial axes, are parallel vertical ribs 48. The'bottom sec-tion of each standard member 13 nests and is slightly wedged in a corresponding coupling well 24 of a foot member 14 and is separable therefrom, the column side walls 44 being trans-verse and the webs 46 extending laterally.
When the standard member 13 includes two or more end to end column units 43, as shown best in Figures 4 and 5, the column units are separably joined by a connector 45 ' including first and second coupling members 49 and 50 ~espec-`, tively. The first coupling member 49 comprises a rectangular vertical base plate 51, which overlies one face of the end to - end web's 46 at their juncture and is provided with outwardly ` ~'8 -. .
` ' - :' ' .' :
~ ~ 5 ~ ~ 3 diTected side walls 52:whi'ch overlie the 'inside'faces of the column side walls 44 .and top ~nd bottom hori~ontal walls 53. Integrally fo~med with'the base platc 51 and projecting through web openings 41 adjacent to the junctllre of column Wl:its 43 are'rectangular ver~ically aligned loops 54 having lateral end legs~56. The 'second coupling member 50 extends throu~h the loops 54 and is wedged between the loop end legs 56 and the cross web 46, ~he coupling member S0 being channel ~ ' shaped and nesting within the loops 54 and being provided at its top with a finger piece 5S. :~
As shown best in ~igu~es 1, 11-15, each of the shelf ~` '' ~ .
, assemblies or shelves 12 comprise a main shelf member 57 of ~ , ~'rectangular configuFation including a rectang~ar top panel 58 with depending side end flanges S9 and front and rear flanges 60. Pormed in the top front and rear borders of each panel 58 and extending for slightly less than the full length thereof is a groove 61 and -formed in each ~lange are regularly laterally spaced rectangular openings 63 providing access to the underface of the panel 58. In alignment with and ~ ', 2Q shortly inwardly of each opening 63 is a depending coupling ~
ridge 64. ~ :
Integrally formed with each main shelf member 57, as best seen in Figures 2 and 3, along the medial side edge flange 59 thereof is a pair of opposite late~ally aligned coupling members 659 each of which includes a base plate 66 extending transversely and being in a plane perpendicular to the panel 58 and inwardly of the proximate end flange 59. :~
'' The opposite edges of base plate 66 are cuTved and a peripher- ` :
al wall 67 projects laterally outwardly from the curved edges ; 3Q and are interrupted by diametrically opposed openlngs 68, whose medial axes' are disposed at angles of 22~ to the perpin~
' ' - . . ....... . . . . .
,, , , . , .: ,, ~ ~ S ~ 9 3 dicular o~ panel 58. Peripherally extending slots 69 are formea at the bases of walls 67, proximate base plate 66, in the sec*ions of walls 67 proximate 'the openings 68, the dis-tance between the remote ends o adjacent slots 69 is greater than,the width of column wall ~4 and the width of the slots 69 is slightly greater tllan the column side wall maximum thickness.
A pair of opposing shallow V-shaped similar inner guide walls 70 are integrally formed with the peripheral wall 67 and have inner edges spaced from the base plate 66 a distance "' equal to the width of slot 69, the lateral outer edges of walls 70 being coplanare with those of peripheral wall 67.
The guide walls 70 ~are symmetrical with the medial 22~ axis of openings 68 and each guide wall 70 includes upper and lower legs 71 and 72 respectively, extending,from peripheral wall 67 at'points inwardly of openings 68 and joined by a curved apex 73, the adjacent leg of opposite guide walls being 45~
to each other. The distance between the planes of the inside faces of upper legs 71 and correspondingly opposite lower legs 72 is about equal to the thickness of column cross web 46 and the distance between apices 73 is somewhat greater than such distance.
A symmetrical pair of similar outer V-shaped guide walls 74 are equally spaced outwardly of guide wallls 70 and are integrally formed with base plate 66 and peripheral wall 67.
The distance between the apices of guide walls 74 is greater than the ~lidth of column side wall 44 and the distance between the planes of the inside faces of opposite top and bottom legs of guide walls 74 is about equal to such width. Pro-jecting inwardly -from each end of peripheral wall 67 adjacent openings 68 are fingers 76 which form with their a~jacent . .
: . - , - : -~ . .
. . : .-. . :. , . :
. - -:., . ,, :.. . , ~, .
.~ , . . .,: : .' ' ~
1 ~ 5 ~ ~ 3 corresponding gu:ide wall lags 71 and 72 respectiv~ly coupling hooks 77.
In the assembled condition of the standards. 13 and -the shelf member 57, the opposito coupling members 65 engage a correspon~in~ laterally spac~d,column unit 43, with the column side walls 44 receive~ within and engaging the slots 69 and the column cross webs 46 extanding through openings 68 and between opposing apices i3. When the shelf member 57 is inclined at a 22~ ang].e as shown in Figure 3, it is freely ~ .
vertically movable along the column unit 43. However~ w~en the shelf member is swung either to a horizontal position or to a 45 inclination, one pair of opposite guide legs 71 and 72 tightly engage the cross web 46 and the corresponding .:
aligned legs of guide wall 74 engage the respective edges of , column side wall 44. In addition, a corresponding pair of hooks 77 engage the lower edges of respective positioning openings 47.
As seen in Figures 1 and 14 9 the front and rear edges of the shelf member 57 may be provided with upwardly directed retainer walls 78 separably oonnected to one or both lateral edges oE the shelf member 57 and extending for the full :' ` , , lengths theTeofO ~ach retainer wall 78 includes a laterally ;~
`- extending panel 79 abutting the shelf flange 60 and provided along its top and bottom edges with forwardly con~erging '; laterally extending lips 80. Projection rearwardly from the ~ ;
.: bot*om edge o web 79 is a flange 81 engaging the underface .~ :
:`, of 'flange 60 and terminating in an upwardly di~ected lip 82 :~:
"~, engaging the underface of flange 60. Also directed,rearward~
ly from the rear face of web 79 between the top and ~ottom therefrom is a flange 83 terminating in a depending lip 84 matingly engaging the groove 61 along the full leng*h thereof. ~ ~:
, ................ ~ 1 1 - ~
':
., . . .. . .. -. . ~ . , ~ . ... . ~ ,.. . .
~C~5~V93 The retainer wall 78 may be applîed or separated from the ,.
shel membcr 57 by TespectiveIy snapping or unsnapping the lip`84 from groove 61 and lip'82 from flange 60.
RefeIring now to Figures''~l, 11-13 and 15, extension shelves'86 may be attached to or detatched from the main shelf members 57, and includes a top panel 87 having dopending ~rom its front edge a flange 88 corresponding in cons~ruct-ion to flange 60, a depending rear flange 89 and side end flanges 90. In the attached condition of shelf member 86, the rear flange 89 abuts a shelf front flange 60 and coupling membe~s 91 extend rearwardly from the flange 89 through cor-responding openings 63 in adjacent flange 60.
Each of ~e coupling members 91 includes a top plate 92 abutting the underface of the shelf panel 58 and reinforeced by a plurality o-f laterally spaced depending thin integrally formed similar panels 94. The panels 94 are provided with ,upwardly inwardly inclined bottom edges 96 terminating at its front end in a:~rounded shoulder 97 releasably engaging the bottom inner edge or corner 98 o a respective opening 63 and ; 20 terminating at its rear in a rounded end 99. The inner free end o~ plate 92 is enlarged in thickness and is provided in its top face in a laterally extending gToo~e Teleasably en-gaging a respective rib 64. The coupling members snap fit into the openings 63 with the ribs 64 releasably lockable engaging the mating groo~es in the coupling plates 92 and '~he opening corners 98 and rounded shoulders 97 releasably engaging. The extension shelf 86 may be pulled from the main shelf 57 by applying sufficient force. A retainer wall 100, similar to retainer wall 78 may be applied to the outer edge -of the extension shelf'86. , The shel assembly may be erec~ed or disassembled in a l . ~ ~
' ' . ~ , .... . . ... , .. .. , .. ,.
,: . ," :; , , ~ S ~ 9 3 manner which is clear from the above.' Any des'ired arrange-ment of the'shelves may be'achieved by applying the main shel-f member 57 to the foot piece'supported column units 43, coupling additional column units to the'lower units by mèans of the connector members 49 and 50 and adding additional shelves. The shelf coup~ing sections 65 are less than half the width of the column cross webs 46 permitting the coupling of two coupling members 65, side by side, in a common column unit 43. Accordingly, more than two regularly spaced standard members 13 and associated foot members may be provided, with adjacent standard members joined by bridging shelf members 57.
The shelf members 57 may be individually adjusted to their horizontal and inclined positions and vertically adjusted and provided with any desired shelf extension and retainer wall.
While the coupling members 65 were shown to be integral ; with the shel 57, they could be separate, such as a bracket ` ' and shelf mounted on a pair o brackets.
'; vMaximum strength of this device lo is achieved by reason ~ the "H~' shape of the standard and the in*eraction of the coupling member. The coupling member fully enclose one verti-cal leg of the "H" in two planar dimesions to provide maximum suTface contact. This large bearing surface of the bracket '' against each standard produces a strong unit per unit of ~ight. If each leg of the st~ndard is about an inch deep ' f~m the centre and the coupling section is about 3 inches long, there are 3 square inches of surface contact on both sides of the '!H" standard plus the surface contact of the web .
'~ and edge, about 1/8 inch. Also, the various slots or openings of coupling member 65 have different tapers for different ~ "
~` 30 purposes. To move'freely the shelves along the standards, `- the central 2/3 of the slotted passageway, opening 68 and ~' - 13 - ~ ' ` ' . '~ ,'. ' ~ :
: .. . . -- . ~ .. , . . . - - . :
~5~93 be~ween apices 73, as shown in Figure 3~ is widest to move the shelves quickly. Once at the selected vertical position3 t}le shelves are swung clockwise or counter clockwise to lock them into a 45 ~Figure 6) or 180 (Pigure 10A) position respectively, and correspondi~g coupling hooks 77 and corres-ponding legs 71 and 72 are wedged against the cross webs 46 and guide walls 74 abut column side walls 44. The slots formed by these cooperative membeTs are tapered both horizon-tally and veTtically to lock the shelves into selected position along the standards.
While there has been described and illustrated a pre-ferred embodiment of the present invention, it is apparent that numerous alterations, omissions and additions may be made without departing from the spirit thereof. For example, the guide walls 74 may be omitted and the V-shaped guide walls may be replaced by curbed guide walls which advantageously are of spiral convolutions or otherwise and of varying radius of curvature.
;
;. :, .'. ' ~, :' ,'. ' i ' `'' :~
.` . ~
.,: , . ~',~'-'.
. , ~ .
.. 1. ~ .
`. , ` ~'~-;
- 1 4 - l
~os~
The present invention relates generally to improve~
men'ts in display or storage'devices and it relates mOTe particula~ly to an improved adjustable'shelf and standard structure o~ modular construction which may be rapidly assembled or collapsed and in which the shelves are angular-ly and vertically adjustable.
There are numerous applications or easily assembled and collapsed, simple lightweight shelf structures which possess a wide range of adjustment and variation in height, width and shelf arrangement, size and inclination. The structure heretofore proposed and availably possess numeT-ous drawbacks and disadvantages. They are expensive and bulky stTuctures often of unatttractive appearance. Ordin-arily, the shelves are supported from the rear and side9 so as to restrict accessibility and are of little versatil-ity and adaptability and otherwise leave much to be desired.
'It is a principal object of the present invnetion to provide and improved display device. '~.
AnotheT object of *he ~Tesen~ invention is *o provide an improved adjustable shelf structure.
Still another object of the present invention is to provide an improved adjustable shelf structure of modula~
construction in which the overall size of the structure and the arrangement and orientation of the shelves as well as their sizes may be easily varied an~ adjusted. ~iA further object of the present invention is to pro-vide an improved adjustable shelf structure 3 which is ; e~ficient in design and economical in material, but yet is ~ s~rong and desirable.
:`
~` 30 A still further object of the present invention is to provide a structure of the above nature characterized ' - 2 -: , , . , :-. .
lOS40~
by its reIitability, attractive 'appeaTance, ease and con-venience 'of rapid assembly, erection, collapse 'and adjust-ment, its ruggedness~ low cos~ and high'~ersatility and adaptability.
The above an other objects of the present invention will become apparent from a reading of the following description taken in aonjunction with the accompanying drawings, which illustrate preferTed embodiments theTeof.
In a sense, the present inven~ion con~emplates the ' ' provision of an improved modular, shelf type display device comprising at least one verticle standard, a laterally extending shelf member and a coupling member located on t,he shelf member and vertically slidably engaging the standard and limiting the swinging of the shelf about a laterally extendin~ axis between predetermined angles and lncluding means responsive to the positioning of the shelf member at one of the predetermined angles for releasably locking the shelf member in its set position.
According to the preferred embodiment *wo or mora ; ' 20 laterally spaced standards are provided, each standaTd ~ ' ' having its lower end separably nested in a medial socket formed in an adjustable transversely extending foot piece.
Each standaTd is formed of one or more columns of H-shaped ' transverse cross section inter-connacted end to end and having vertically aligned rectangular shaped positioning "
openings formed in the standard crossweb, which extends laterally. Each shelf member has a medially disposed '~
integrally formed coupling member at each end engaging a ~ ;
corTesponding standard, each coupling member including an inner transverse base plate. Laterally outwardly projecting symmet'rically disposed positioning webs OT strips are ~' ~ S~9 3 -located on each base plate, the webs being of shallow ~-shape ~nd including a pair of inner first positioning webs whose apices are directod toward each other and delineate a narrow throat and whose inner edges are spaced from the base plate to deEine slots which engage the standards side walls, A second pair of pos;tioning webs are disposed radially outwardly of and are parallel to the first posi-tioning web. A~hook element having a radially inwardly directed opening is located at an end of each of the first positioning webs. When the shelf is between its predeter-mined angles the shelf is freelyslidably along the standards.
However, when the shelf is at a predetermined position and angle, one of the end sections of each of the positioning webs firmly engages the standard cross web or side wall and the hook elements engage the lower edges of corresponding positioning openings.
The improved display device is rugged, reliable, of great versatility and adaptability, of attractive appearance strong, inexpensive and easy and convenient to assemble~
erect, adjust and collapse.
FiguTe 1 is a front perspective view, partially frag-ment~d, of an assembled display device embodying various - aspects of the present invention, Figure 2 is an enlarged, fragmentary perspective view of the shelf coupling and support standard in a separated condition;
Figure 3 is an enlarged sectional view taken along line 3-3 on Figure l;
Figure 4 is a sectional view taken along line 4-4 in Figure l;
Figure 5 is a sectional view taken along line 5-5 in - 4 ~
' ~154~3 Figure 4;
Figure 6 is a sectional view -taken along line 6-6 in F.igure l;
Figure Y is a sectional view taken along line 7-7 in Figure 6;
Figu~e 8 is a sectional view taken along line 8-8 in Figure 6;
Figure 9 is a sectional view taken along line 9-9 in Figure 1, Figure lOA is a sectional view taken along line 10-10 in Figure l;
FiguTe lOB is a sectional view taken along line lOB-lOB
in Figure 9; , Figure 11 is a sectional view taken along lin~ 11 in ', Figure l; ` '.
Figure 12 is a fragmentary visw taken along line 12-12 in Figure 11;
Figure 13 is a sectional view taken along line 13-13 in Figure 12; ' ;~
FiguTe 14 is a sectional view taken along line 14-14 in Figure l; . . :
Figure 15 is a sectional view taken along line 15-15 in Figure l;
.
Figure 16 is a sectional view taken along line 16-16 ~ .
in Figure l;
Figure 17 is a bottom plan view of the foot piece shown - . in Figure 16; and Figure 18 is a sectional view taken along line 18 18 ~ in Figure 16.
: 30 Referring now to the drawings wl~ich illustrate a :~
preferred embodiment of the present invention, the reference : 5 ~.
- - . - ~ -~O5 ~ ~ 3 numeral lO g~nerally designates the improved display device, which includ~s two or more`standard assemblies 11 and a plurality of shel~es 13 which are individually adjustable in size~ position and orientation. While only two st~ndard assemblies 11 are shown, it should be understood that more such assemblles may be employed and they are regularly laterally spaced as determined by the lengths of the shelves 12, whi`ch are equal to each other. The intermediate stand-ards 11 are common to adjoining pairs of shelves. The number and arrangement of the shelves may likewise be modified.
The various components of the display device may be formed of any suitable material in the conventional manner, for example, extruded aluminum; or, they are advantageously formed of a synthetic organic polymeric resin, such as polysty~ene, polypropylene, ac~ylonitrilebutadiene-styrene tABS) and the liXe.
Figure 1 illustrates various positions and forms of the shelves 12 on standard assemblies 11. Referring to the various shelves in Figure 1 from top to bot~om, the *opmost shelf is in sliding position to locate it anywhele along standard members 13. The second shelf from the top illus-trates the shelf in hori~ontal position with one shelf extender on and the rear extender in exploded position and ~ `
an adjoining fragmentary shelf shown. The next lower shelf ~` is in 45 position with a fron edge guard shown. This posi- -tion allows positive feed of merchandise placed on the shelf when the frontmost item is removed. The bottom shelf is also at a 4S angle with an extender and edge guard mounted. ;~
The standard assemblies 11 each include one or more ~
standard members 13 separably connec*ed end to end and a foot ~ ~
member 14, as best seen in Figures 1 and 16-18. The foot . . ~ . : . ; ..
~ ~ 5 ~ ~ 3 membeT 14 .as seen best .in Figures 16~18, comprises a trans- -versely extending body membeT 16 includi.ng transversely aligned oppositely projecting channel shaped legs 17 medially joined by a ~ertically upwardly enlarged midsec*ion l9.
~ach of the legs 17 includes a horizontal top wall 20 and depending side walls 21~ the top walls 20 joining upwaTdly inwardly inclined top walls 22 of midsection 19 and the side walls21 being joined by the ~erical side walls 23 of mid-section 190 A medial vertically oriented coupling well 24 of square hori~ontal cross section is formed in midsection 19 and is delineated by a bottom wall 26 at the base of midsection 19, slightly downwardly converging front and rea.r walls 27 and the midsection side walls 23. Extending long- -~
itudinally a~ong the inside aces o~ side walls 21 shortly below the top walls 20 are ribs 28 having coplanar top shoul-ders and a transverse rib 29 depends from the underface of ~ :
top wall 20 proximate its outer end. The side walls 21 -.
terminate at the free ends in short depending foot ser.tions ~0.
Z0 Slidably telescoping each oE the channel legs 17 is a nesting open bo~tom channel shaped extension leg 32 which projects beyond the end of the corresponding body leg 17 and is selectively slidable between extended and retTacted posi-tions. Each of the extension legs 32 includes a top wall 33 underlying the corresponding top wall 20 of leg 17 and depending side walls 34 provided along thei~ tops with out-wardly directed pTojections 36 slidably engaging tracks de-fined by the top wall 20 of legs 17 and ribs 28. Longitudi~ :
.. .nally spaced, laterally extending grooves 37 are formed in the top face of channeI top wall 33 and are releasably en- .
gagable by rib 29 of top wall 20 to lock the extension leg . , ~ ~ 5 ~ ~ 3 32 in a prescribed position.
A downwarly open we.Il 38 is formed at the end o-~ each extension leg 32 and is provided at its base with three angulaTly related depending vertical panels 39 p~ovided at their underaces' with bosses,40. ~ ball roller 41 nests in the well 38 and engages the bosses 40 and projects below the well 38, ~he ball 41 being rotat'ably retained in the well 38 by a suitably shaped annulus or washer ~ secured in the open end of well'38.
Referring now *o Figures 1-5, each of the standard ,.' , members 13 includes a single column unit 43 of generally "H"-shaped transverse cross section or two or more axially ~ligned H-column units separably connected end to end by suitable fasteners. Each column unit 43 includes laterally spaced transverse side walls 44 connected by a medial cross '-~, web 46 having formed therein regularly vertically spaced rectangular positioning openings 47~ which extend for the ful~ width of the cross web 46 . Formed on the outside faces of the column side walls 44 along their vertical edges and ~ ~ ' '` 20 medial axes, are parallel vertical ribs 48. The'bottom sec-tion of each standard member 13 nests and is slightly wedged in a corresponding coupling well 24 of a foot member 14 and is separable therefrom, the column side walls 44 being trans-verse and the webs 46 extending laterally.
When the standard member 13 includes two or more end to end column units 43, as shown best in Figures 4 and 5, the column units are separably joined by a connector 45 ' including first and second coupling members 49 and 50 ~espec-`, tively. The first coupling member 49 comprises a rectangular vertical base plate 51, which overlies one face of the end to - end web's 46 at their juncture and is provided with outwardly ` ~'8 -. .
` ' - :' ' .' :
~ ~ 5 ~ ~ 3 diTected side walls 52:whi'ch overlie the 'inside'faces of the column side walls 44 .and top ~nd bottom hori~ontal walls 53. Integrally fo~med with'the base platc 51 and projecting through web openings 41 adjacent to the junctllre of column Wl:its 43 are'rectangular ver~ically aligned loops 54 having lateral end legs~56. The 'second coupling member 50 extends throu~h the loops 54 and is wedged between the loop end legs 56 and the cross web 46, ~he coupling member S0 being channel ~ ' shaped and nesting within the loops 54 and being provided at its top with a finger piece 5S. :~
As shown best in ~igu~es 1, 11-15, each of the shelf ~` '' ~ .
, assemblies or shelves 12 comprise a main shelf member 57 of ~ , ~'rectangular configuFation including a rectang~ar top panel 58 with depending side end flanges S9 and front and rear flanges 60. Pormed in the top front and rear borders of each panel 58 and extending for slightly less than the full length thereof is a groove 61 and -formed in each ~lange are regularly laterally spaced rectangular openings 63 providing access to the underface of the panel 58. In alignment with and ~ ', 2Q shortly inwardly of each opening 63 is a depending coupling ~
ridge 64. ~ :
Integrally formed with each main shelf member 57, as best seen in Figures 2 and 3, along the medial side edge flange 59 thereof is a pair of opposite late~ally aligned coupling members 659 each of which includes a base plate 66 extending transversely and being in a plane perpendicular to the panel 58 and inwardly of the proximate end flange 59. :~
'' The opposite edges of base plate 66 are cuTved and a peripher- ` :
al wall 67 projects laterally outwardly from the curved edges ; 3Q and are interrupted by diametrically opposed openlngs 68, whose medial axes' are disposed at angles of 22~ to the perpin~
' ' - . . ....... . . . . .
,, , , . , .: ,, ~ ~ S ~ 9 3 dicular o~ panel 58. Peripherally extending slots 69 are formea at the bases of walls 67, proximate base plate 66, in the sec*ions of walls 67 proximate 'the openings 68, the dis-tance between the remote ends o adjacent slots 69 is greater than,the width of column wall ~4 and the width of the slots 69 is slightly greater tllan the column side wall maximum thickness.
A pair of opposing shallow V-shaped similar inner guide walls 70 are integrally formed with the peripheral wall 67 and have inner edges spaced from the base plate 66 a distance "' equal to the width of slot 69, the lateral outer edges of walls 70 being coplanare with those of peripheral wall 67.
The guide walls 70 ~are symmetrical with the medial 22~ axis of openings 68 and each guide wall 70 includes upper and lower legs 71 and 72 respectively, extending,from peripheral wall 67 at'points inwardly of openings 68 and joined by a curved apex 73, the adjacent leg of opposite guide walls being 45~
to each other. The distance between the planes of the inside faces of upper legs 71 and correspondingly opposite lower legs 72 is about equal to the thickness of column cross web 46 and the distance between apices 73 is somewhat greater than such distance.
A symmetrical pair of similar outer V-shaped guide walls 74 are equally spaced outwardly of guide wallls 70 and are integrally formed with base plate 66 and peripheral wall 67.
The distance between the apices of guide walls 74 is greater than the ~lidth of column side wall 44 and the distance between the planes of the inside faces of opposite top and bottom legs of guide walls 74 is about equal to such width. Pro-jecting inwardly -from each end of peripheral wall 67 adjacent openings 68 are fingers 76 which form with their a~jacent . .
: . - , - : -~ . .
. . : .-. . :. , . :
. - -:., . ,, :.. . , ~, .
.~ , . . .,: : .' ' ~
1 ~ 5 ~ ~ 3 corresponding gu:ide wall lags 71 and 72 respectiv~ly coupling hooks 77.
In the assembled condition of the standards. 13 and -the shelf member 57, the opposito coupling members 65 engage a correspon~in~ laterally spac~d,column unit 43, with the column side walls 44 receive~ within and engaging the slots 69 and the column cross webs 46 extanding through openings 68 and between opposing apices i3. When the shelf member 57 is inclined at a 22~ ang].e as shown in Figure 3, it is freely ~ .
vertically movable along the column unit 43. However~ w~en the shelf member is swung either to a horizontal position or to a 45 inclination, one pair of opposite guide legs 71 and 72 tightly engage the cross web 46 and the corresponding .:
aligned legs of guide wall 74 engage the respective edges of , column side wall 44. In addition, a corresponding pair of hooks 77 engage the lower edges of respective positioning openings 47.
As seen in Figures 1 and 14 9 the front and rear edges of the shelf member 57 may be provided with upwardly directed retainer walls 78 separably oonnected to one or both lateral edges oE the shelf member 57 and extending for the full :' ` , , lengths theTeofO ~ach retainer wall 78 includes a laterally ;~
`- extending panel 79 abutting the shelf flange 60 and provided along its top and bottom edges with forwardly con~erging '; laterally extending lips 80. Projection rearwardly from the ~ ;
.: bot*om edge o web 79 is a flange 81 engaging the underface .~ :
:`, of 'flange 60 and terminating in an upwardly di~ected lip 82 :~:
"~, engaging the underface of flange 60. Also directed,rearward~
ly from the rear face of web 79 between the top and ~ottom therefrom is a flange 83 terminating in a depending lip 84 matingly engaging the groove 61 along the full leng*h thereof. ~ ~:
, ................ ~ 1 1 - ~
':
., . . .. . .. -. . ~ . , ~ . ... . ~ ,.. . .
~C~5~V93 The retainer wall 78 may be applîed or separated from the ,.
shel membcr 57 by TespectiveIy snapping or unsnapping the lip`84 from groove 61 and lip'82 from flange 60.
RefeIring now to Figures''~l, 11-13 and 15, extension shelves'86 may be attached to or detatched from the main shelf members 57, and includes a top panel 87 having dopending ~rom its front edge a flange 88 corresponding in cons~ruct-ion to flange 60, a depending rear flange 89 and side end flanges 90. In the attached condition of shelf member 86, the rear flange 89 abuts a shelf front flange 60 and coupling membe~s 91 extend rearwardly from the flange 89 through cor-responding openings 63 in adjacent flange 60.
Each of ~e coupling members 91 includes a top plate 92 abutting the underface of the shelf panel 58 and reinforeced by a plurality o-f laterally spaced depending thin integrally formed similar panels 94. The panels 94 are provided with ,upwardly inwardly inclined bottom edges 96 terminating at its front end in a:~rounded shoulder 97 releasably engaging the bottom inner edge or corner 98 o a respective opening 63 and ; 20 terminating at its rear in a rounded end 99. The inner free end o~ plate 92 is enlarged in thickness and is provided in its top face in a laterally extending gToo~e Teleasably en-gaging a respective rib 64. The coupling members snap fit into the openings 63 with the ribs 64 releasably lockable engaging the mating groo~es in the coupling plates 92 and '~he opening corners 98 and rounded shoulders 97 releasably engaging. The extension shelf 86 may be pulled from the main shelf 57 by applying sufficient force. A retainer wall 100, similar to retainer wall 78 may be applied to the outer edge -of the extension shelf'86. , The shel assembly may be erec~ed or disassembled in a l . ~ ~
' ' . ~ , .... . . ... , .. .. , .. ,.
,: . ," :; , , ~ S ~ 9 3 manner which is clear from the above.' Any des'ired arrange-ment of the'shelves may be'achieved by applying the main shel-f member 57 to the foot piece'supported column units 43, coupling additional column units to the'lower units by mèans of the connector members 49 and 50 and adding additional shelves. The shelf coup~ing sections 65 are less than half the width of the column cross webs 46 permitting the coupling of two coupling members 65, side by side, in a common column unit 43. Accordingly, more than two regularly spaced standard members 13 and associated foot members may be provided, with adjacent standard members joined by bridging shelf members 57.
The shelf members 57 may be individually adjusted to their horizontal and inclined positions and vertically adjusted and provided with any desired shelf extension and retainer wall.
While the coupling members 65 were shown to be integral ; with the shel 57, they could be separate, such as a bracket ` ' and shelf mounted on a pair o brackets.
'; vMaximum strength of this device lo is achieved by reason ~ the "H~' shape of the standard and the in*eraction of the coupling member. The coupling member fully enclose one verti-cal leg of the "H" in two planar dimesions to provide maximum suTface contact. This large bearing surface of the bracket '' against each standard produces a strong unit per unit of ~ight. If each leg of the st~ndard is about an inch deep ' f~m the centre and the coupling section is about 3 inches long, there are 3 square inches of surface contact on both sides of the '!H" standard plus the surface contact of the web .
'~ and edge, about 1/8 inch. Also, the various slots or openings of coupling member 65 have different tapers for different ~ "
~` 30 purposes. To move'freely the shelves along the standards, `- the central 2/3 of the slotted passageway, opening 68 and ~' - 13 - ~ ' ` ' . '~ ,'. ' ~ :
: .. . . -- . ~ .. , . . . - - . :
~5~93 be~ween apices 73, as shown in Figure 3~ is widest to move the shelves quickly. Once at the selected vertical position3 t}le shelves are swung clockwise or counter clockwise to lock them into a 45 ~Figure 6) or 180 (Pigure 10A) position respectively, and correspondi~g coupling hooks 77 and corres-ponding legs 71 and 72 are wedged against the cross webs 46 and guide walls 74 abut column side walls 44. The slots formed by these cooperative membeTs are tapered both horizon-tally and veTtically to lock the shelves into selected position along the standards.
While there has been described and illustrated a pre-ferred embodiment of the present invention, it is apparent that numerous alterations, omissions and additions may be made without departing from the spirit thereof. For example, the guide walls 74 may be omitted and the V-shaped guide walls may be replaced by curbed guide walls which advantageously are of spiral convolutions or otherwise and of varying radius of curvature.
;
;. :, .'. ' ~, :' ,'. ' i ' `'' :~
.` . ~
.,: , . ~',~'-'.
. , ~ .
.. 1. ~ .
`. , ` ~'~-;
- 1 4 - l
Claims (15)
1. A display device comprising a vertical standard, a coupling member vertically slidably engaging said standard, and a laterally extending shelf member supported by and co-operating with said coupling member, said coupling member limiting the swinging of said shelf member about a laterally extending axis between first and second predetermined angles and including means responsive to the positioning of said shelf member in one of said predetermined angles for releas-ably locking said shelf member to said standard against the lowering of said shelf member along said standard.
2. The display device of claim 1 comprising a pair of said vertical standards which are laterally spaced, said shelf member having a pair of side edges and one of said coupling members located proximate each of said side edges and engaging a corresponding standard.
3. The display device of claim 2 including a trans-versely extending foot piece located at the base of and seper-ably engaging and supporting each of said standards.
4. The display device of claim 1 wherein said vertical standard includes a vertical first web lying in a transverse plane to the axis of said shelf and a vertical lateral second web extending transversely from said first web between the vertical opposite edges of said first web.
5. The display device of claim 4 wherein said coupling member includes a pair of opposing track sections lying along converging lines and terminating at their proxi-mate ends in a throat, said sections slidably engaging res-pective opposite vertical sides of said standard first web and the bases of said track sections alternatively engaging respective side edges of said first web when said shelf is at corresponding predetermined angles.
6. The display device of claim 4 wherein said coupling member includes a base plate positioned a a side end of and lying in a plane perpendicular to the plane of said shelf member and a pair of angular guide walls perpendicular to said base plate and converging to a throat engaging said standard second web alternate pairs of portions of said guide wall engaging said standard second web when said shelf member is at a respective one of said predetermined angles.
7. The display device of claim 6 wherein said guide walls have longitudianl slots formed therein adjacent to said base plate and slidably engaging said standard first webs.
8. The display device of claim 7 wherein said standard second web has vertically spaced openings formed therein and a locking element projecting inwardly from each of said guide walls and alternatively releasably engaging selected ones of said openings when said shelf is at a respec-tive of said prredetermined angles.
9. A display device comprising a pair of laterally spaced vertical H-column standards, each including transverse side first webs and a laterally extending medial second cross web, a laterally extending shelf member positioned between said standards and swingable about a laterally extending axis between alternative horizontal and inclined positions and simi-lar coupling members located at the side ends of said shelf and rockably and slidably engaging respective standards and being releasably lockable in a predetermined position thereon, each of said coupling members including a base plate having perpendicular to the plane of said shelf member and positioned in a side edge thereof and a pair of outwardly directed first positioning walls perpendicular to said base plate and out-wardly spaced therefrom by corresponding slots, said position-ing walls converging to and then diverging from a restricted throat of greater thickness than said standard second web, alternative opposing sections of said positioning walls engaging opposite faces of said standard second web when said shelf is in corresponding horizontal or inclined postions and the adjacent standard first web slidably engaging said coupling member slots.
10. The display device of claim 9 wherein said standard second web has vertically spaced locking openings formed therein and including locking elements projecting from the opposite sections of each of said first positioning walls and releasably engaging corresponding standard web openings when said shelf is one of its alternative positions.
11. The display device of claim 10 wherein said locking elements consist of downwardly open hooks releasably engaging the lower edges of respective standard web openings.
12. The display device of claim 9 wherein each coupling member includes second positioning walls positioned in the respective base plate outwardly of and parallel to said first positioning walls, opposite sections of each of said second positioning walls engaging the respective opposite side edges of the standard first web.
13. The display device of claim 12 wherein each of said positioning walls is of V-shaped configuration.
14. The display device of claim 12 wherein each of said positioning walls is of curved configuration with the radius of curvature increasing from one end to the opposite end thereof and the portions of the first positioning walls of least radius of curvature being diametrically opposed.
15. The display device of claim 12 wherein the shelf member has openings along a longitudinal edge, said shelf lower surface having a boss extending therefrom; paral-lel to and spaced from the longitudinal edge from said openings, and an extension shelf having projecting fingers for receipt in said openings and a groove to matingly lock with said boss.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US537653A US3921539A (en) | 1974-12-31 | 1974-12-31 | Shelf support structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1054093A true CA1054093A (en) | 1979-05-08 |
Family
ID=24143559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA240,399A Expired CA1054093A (en) | 1974-12-31 | 1975-11-25 | Shelf support structure |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3921539A (en) |
| JP (1) | JPS5180454A (en) |
| AU (1) | AU502487B2 (en) |
| CA (1) | CA1054093A (en) |
| DE (1) | DE2550383A1 (en) |
| ES (1) | ES228968Y (en) |
| GB (1) | GB1502387A (en) |
| ZA (1) | ZA756826B (en) |
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| GB8717682D0 (en) * | 1987-07-25 | 1987-09-03 | Shoptech Ltd | Ladder-form |
| US4825975A (en) * | 1988-06-17 | 1989-05-02 | Gregg Symes | Clamping device & mechanics stand for attaching to bumper of motor vehicle |
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| US5240127A (en) * | 1992-02-07 | 1993-08-31 | Nysco Products, Inc. | Modular display system |
| US6202567B1 (en) | 1994-06-10 | 2001-03-20 | Krueger International, Inc. | Modular table system with cable management |
| USD379886S (en) * | 1996-01-03 | 1997-06-17 | Soho, Inc. | Adjustable table and shelf unit |
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|---|---|---|---|---|
| US1512291A (en) * | 1923-09-08 | 1924-10-21 | Frank A Mcguire | Tray holder for beds |
| NL107523C (en) * | 1959-04-28 | |||
| US3700114A (en) * | 1971-01-18 | 1972-10-24 | Clark Equipment Co | Adjustable shelf support bracket |
-
1974
- 1974-12-31 US US537653A patent/US3921539A/en not_active Expired - Lifetime
-
1975
- 1975-10-29 AU AU86111/75A patent/AU502487B2/en not_active Expired
- 1975-10-29 ZA ZA00756826A patent/ZA756826B/en unknown
- 1975-11-10 DE DE19752550383 patent/DE2550383A1/en active Pending
- 1975-11-24 GB GB48240/75A patent/GB1502387A/en not_active Expired
- 1975-11-25 JP JP50140332A patent/JPS5180454A/ja active Pending
- 1975-11-25 CA CA240,399A patent/CA1054093A/en not_active Expired
- 1975-12-30 ES ES1975228968U patent/ES228968Y/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES228968U (en) | 1977-07-16 |
| ZA756826B (en) | 1976-10-27 |
| ES228968Y (en) | 1977-12-01 |
| US3921539A (en) | 1975-11-25 |
| JPS5180454A (en) | 1976-07-14 |
| AU8611175A (en) | 1977-05-05 |
| DE2550383A1 (en) | 1976-07-08 |
| AU502487B2 (en) | 1979-07-26 |
| GB1502387A (en) | 1978-03-01 |
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