WO1993019642A1 - Framework for shelving unit - Google Patents
Framework for shelving unit Download PDFInfo
- Publication number
- WO1993019642A1 WO1993019642A1 PCT/CA1993/000116 CA9300116W WO9319642A1 WO 1993019642 A1 WO1993019642 A1 WO 1993019642A1 CA 9300116 W CA9300116 W CA 9300116W WO 9319642 A1 WO9319642 A1 WO 9319642A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- members
- slot
- post
- framework according
- rib
- Prior art date
Links
- 230000001154 acute effect Effects 0.000 claims abstract description 5
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 210000003739 neck Anatomy 0.000 description 27
- 239000002184 metal Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010420 art technique Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000003197 gene knockdown Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B57/00—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions
- A47B57/30—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports
- A47B57/48—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports consisting of tongues, pins or similar projecting means coacting with openings
- A47B57/50—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of detachable shelf supports consisting of tongues, pins or similar projecting means coacting with openings characterised by shape or orientation of opening, e.g. keyhole-shaped
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
- F16B12/10—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like
- F16B12/28—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like for metal furniture parts
- F16B12/34—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like for metal furniture parts using keyhole-shaped slots and pins
Definitions
- This invention relates in general to a framework suitable for use as a shelving unit and more particularly to a framework which may be readily assembled and disassembled by a user.
- frameworks which may be used as the basis of a shelving unit work bench or similar structure and which may be assembled and disassembled for ease of transportation.
- Such frameworks are often used in warehouses and storage rooms and are fabricated from sheet metal which may be roll formed, stamped and cut to the desired shape for assembly.
- These frameworks are typically provided with four vertical corner posts and a plurality of horizontal members.
- the corner posts are often provided with a plurality of apertures for receiving screws or bolts to connect the horizontal members thereto at user selected heights.
- Canadian Patent 1,256,069 discloses a shelving assembly having a plurality of generally horizontal shelves which are connected to four support columns or posts by conventional bolts or nuts. Specifically, each shelf is provided with a flange which defines, at its corners, one or more holes for receiving a bolt or screw which is then inserted through a selected hole or aperture in the vertical column or post.
- the horizontal members are connected to the vertical posts by means of rivets.
- the rivets are inserted in vertically arranged slots in the vertical posts.
- the distance from the side edge (i.e. vertical face) of the vertical post to the side edge of the slot is made slightly different to the distance from the side edge (i.e.
- the rivet in order to install the rivet into the slot, the rivet must be hammered into place by hammering down on the horizontal member so as to distort the metal forming the side edge of the slot.
- a framework is provided which is characterized by an interference fit between the overlapping portions of support members and post members resulting in extremely stable construction.
- the framework of the present invention comprises a plurality of post members mutually spaced from one another in generally parallel relationship and each including a pair of faces disposed perpendicular to one another.
- a plurality of support members are provided to extend between pairs of said post members.
- Each of said support members includes an abutment face delimited at opposite ends by an edge extending normal to the longitudinal axis of the support member.
- Attachment means are provided for connecting the support members to the post members so that the abutment face of the support member overlies a portion of a face of the post.
- the attachment means comprises a generally keyhole-shaped aperture in one of said overlapping faces having,a hole and slot extending therefrom at a predetermined acute angle to the longitudinal axis of the associated member, and a neck and a head portion extending from the neck projecting from the other of the overlapping faces, the head portion being co-operatively shaped for insertion through the hole and the neck being co-operatively shaped to slide within the slot, whereby upon inserting the neck portion through the hole the neck slides within the slot to bring said edge of the support member into abutment with an abutment surface on the post member and further sliding of the neck within the slot is inhibited.
- Figure 1 is a perspective view of the knock-down shelving unit
- Figure 2 is an enlarged perspective view showing the components of the unit in Figure 1 prior to assembly;
- Figure 3 is a cross sectional view through III-III in Figure 2 with the components assembled;
- Figure 4 is a view similar to Figure 2 of an alternative embodiment of shelving unit;
- Figure 5 is a section on the line V-V of Figure 4 with the components assembled
- Figure 6 is an exploded perspective view of a further embodiment of shelving unit
- Figure 7 is a perspective view of the components of Figure 6 assembled
- Figures 8a and 8b are front elevations of the components of Figure 6 with Figure 8a showing the components during initial assembly and Figure 8b showing the components assembled;
- Figure 9 is, a section on the line VIII-VIII of Figure 8 with the components assembled;
- Figure 10 is an exploded perspective view of a pair of legs as used in the embodiment of Figure 6 being connected end to end;
- Figure 11 is an elevation of the components shown in Figure 10;
- Figure 12 is a view of the components shown in Figure 11 assembled
- Figure 13 is a perspective view of a connector used to connect the legs as shown in Figure 12;
- Figure 14 is a view of adjacent legs being interconnected to form a side by side unit.
- FIG 15 is a perspective view of connectors used in connecting the legs as shown in Figure 14.
- an assembled shelving unit 1 comprising four vertical posts 3 each having a pair of legs 30,32 disposed perpendicular to one another.
- Each of the legs 30,32 has a pair of oppositely directed faces 2,4.
- a plurality of horizontal support members 5 extends between respective pairs of the legs 3 and is attached to the legs in a manner to be described below to provide a stable structure.
- the horizontal support members 5 are each formed as channels with a vertical web 6 with a pair of oppositely directed surfaces 9 and horizontal ledges 8.
- the web 6 and ledges 8 terminate in a vertical edge 23.
- Shelves 7 rest on the ledges 8 of the horizontal members 5 to complete the unit.
- Cross bracing members may be provided for additional stability.
- the inherently stable nature of the shelving unit described substantially alleviates the requirement for cross bracing.
- each vertical post 3 are each provided with a plurality of key hole shaped apertures 11 each comprising a generally circular hole 13 and a slot 15 oriented at an acute angle to the longitudinal axis of the post 3. This angle is preferably in the range of from 80 to 300, and more preferably is 101 from vertical.
- Each horizontal member 5 includes at least one attachment connector 17 to attach the member 5 to a respective post 3.
- the connector 17 comprises a neck 19 and head portion 21.
- the neck 19 and head portion 21 are in the form of a rivet which may be installed in the horizontal member 5 during fabrication thereof.
- the neck 19 and head portion may be stamped or punched from the sheet metal horizontal member 5 so as to be integral therewith.
- the attachment means 17 are inserted through respective key hole apertures 11 such that the head portion 21 passes through the circular hole 13.
- the outwardly directed face 9 of the web 6 overlies and abuts a face 4 of one of the legs, for example 32, and the vertical edge 23 of the horizontal member 5 is slightly spaced from the adjacent face 4 of the other leg 30 of the post 3.
- Downward pressure is then applied to the horizontal member 5 such that the neck 19 slides downwardly within slot 15. Since the slot 15 is disposed at an angle, the clearance between the edge 23 and the face 4 diminishes until they abut. Additional downward pressure produces a wedging action that results in an interference fit between horizontal member 5 and vertical post 3.
- the angle of inclination of the slot 15 may vary within a preferred range of acute angles (although a 10° angle of inclination has been determined through experimentation to be optimum) . As the angle of inclination increases, the wedging action between the slot 15 and neck 19 is reduced but a larger tolerance during assembly is obtained. Conversely, as the angle of inclination of slot 15 is made less, the tightness of the interference fit increases but the tolerance requirements are also increased. According to a successful prototype, the head portion 21 is in the form of a circular disk having a diameter of approximately 7/16" and a thickness of approximately .005".
- the neck 19 is in the form of a circular cylinder having a diameter of approximately 0.240", and the length of the neck 19 from the base to the head portion 21 is approximately 0.08".
- the hole 13 is preferably circular and has a diameter of approximately 0.0500" and the slot 15 is generally oblong and has a width of approximately 0.250" and a length of approximately 0.500" extending from the centre of focus of the oblong to the center of the hole 13.
- other dimensions of these components are possible.
- vertical post 3' is substantially the same as shown in Figure 2 with the exception that the slot 15* of the keyhole aperture ll 1 is of generally oblong shape (i.e. with a semi-circular end portion) .
- an attachment means 17' is provided which is separable from the vertical post 3' and horizontal member 5' .
- the attachment means 17' of Figure 5 is shown comprising a first head portion 21', a neck 19' and further head portion 25, resulting in an overall shape generally similar to a yo-yo which is a adapted to be inserted through key hole apertures 11' in the vertical post 3• and through further key hole aperture 27 in the horizontal member 5'.
- the neck 19 slides within slots 15' and 29 in response to downward pressure on the horizontal member 5' .
- movement of the neck 19' in the slots results in vertical edge 23• abutting the vertical face 4• of vertical post 3' .
- the head portion 21' projects from the apertures 11' and 27 adjacent vertical post 3 1 while the head portion 25 projects from the apertures ll 1 and 27 adjacent the horizontal member 5' , thereby retaining the attachment means 17• within the two sets of apertures 11' and 27.
- the head portions 21 and 25 are in the form of circular disks one having a diameter of approximately 7/16" and the other slightly greater than the diameter of the circular hole 13' , and a thickness of approximately .005".
- the neck 19' is in the form of a circular cylinder having a diameter of approximately .240", and the distance of the neck 19* separating head portions 21 and 25 is approximately 0.80".
- the hole 13 • is preferably circular and has a diameter of approximately 0.500
- the slot 15' is generally oblong and has a width of approximately 0.250" and a length of approximately .500" extending from the centre of focus of the oblong to the centre of the hole 13 ⁇ .
- the vertical post 3 (and vertical post 3 1 ) and the horizontal member 5 (and alternative horizontal member 5') are fabricated from sheet metal having a thickness of approximately 0.036".
- the connectors 17a are stamped from the material forming the web 6a of the horizontal member 5a.
- the connector 17a includes a web of material including a neck 19a disposed generally perpendicular to the web 6a and a semi-circular head 21a disposed generally parallel to the web 6a. The spacing of the head 21a from the face 9a corresponds to the thickness of the material forming the vertical post 3a.
- the vertical post 3a is formed with a pair of perpendicular legs 30a,32a which are interconnected by a part-cylindrical rib 34 formed integrally with the legs 30a,32a at the apex of the post 3a.
- Each of the legs 30a,32a are jogged as indicated at 36, and the distal portion of each leg folded back on itself to provide the oppositely directed vertical faces 2a,4a. It will be noted that the portions of the legs defining the faces 2a,4a are spaced from one another so as to define a cavity 40 in each of the legs 30a,32a. The depth of the cavity 40 is slightly greater than the thickness of the head 21a.
- the vertical faces 4a each have a series of keyhole slots 11a having a semi-circular hole 13a and an inclined slot 15a.
- the shape of the hole 13a corresponds to that of the head 21a and the width of the slot 15a corresponds to the thickness of the neck 19a.
- the vertical edge 23a of each of the members 5a projects beyond the horizontal ledges 8a to allow the edge 23a to be received behind the rib 34.
- the outwardly directed face 9a of the web 6a is placed in abutment with one of the vertical faces 4a.
- the heads 21a are aligned with an appropriate one of the holes 13a so that the head passes through and allows the opposed vertical faces 9a,4a to move into abutment.
- the vertical edge 23a of the web 6a is spaced from the rib 34.
- the horizontal member 5a is then moved downwardly relative to the post 3a to Move the neck 19a into the slot 15a. This movement continues until the lateral edges of each of the ledges 8a engage the rib 34 to produce an interference fit and inhibit further downward movement.
- a second horizontal member 5a can then be assembled on the post 3a against the other of the vertical faces 4a and moved downwardly until its lateral edge 23a is behind the rib 34 and the lateral edges of ledges 8a abut the rib 34.
- the rib 34 therefore provides an abutment surface for the lateral edges of the ledges so that each of the horizontal members 5a may be assembled independently of the other. However, as the ledges abut the rib 34 at a pair of spaced apart locations a stable connection between the post 3a and the horizontal member 5a is still provided.
- the head 21a moves within the cavity 40 and inhibits relative horizontal movement between the post 3a and horizontal member 5a.
- the snug fit of the head within the cavity 40 also inhibits the head 19a from being bent from its parallel position by the application of a horizontal force as any horizontal force would have to extrude the head through the slot rather than simply cause the head to bend relative to the neck and pass through the slot.
- the location of the edge 23a behind the rib 34 also inhibits outward movement of the horizontal member 5a relative to post 3a to enhance the rigidity of the structure la.
- Figures 6 through 9 provides a connection that can be integrally formed with the horizontal member 4a and also permits the two horizontal members 5a to be fitted independently of one another to the post 3a.
- the inclination of the slot 15a to the vertical is similar to that described above with respect to Figures 1 to 5 namely in the range of 8° to 30° and preferably 10°.
- the folding back of the limbs 30a, 32a to define the cavity 40 is not only of benefit in retaining the head 21a but also improves the aesthetics of the shelving unit.
- the outwardly directed faces 2a present an unperforated external face to the posts 3a and hide the keyhole slots 11a when the unit is assembled. This allows the unit to be used in furniture applications as well as more conventional utilitarian applications.
- the attachment 17a may also be used to provide alternative configurations of shelving unit.
- the connectors 17a may be used to join a pair of posts 3a end to end without having to overlap the posts 3a.
- a bridging member 42 is provided having a pair of connectors 17a that are spaced apart to correspond to the spacing between adjacent apertures 13a.
- the bridging members 42 are generally rectangular and have a free edge 44, corresponding to the edge 23a of the member 5a, along one side.
- a rib 46 is formed in the bridging members 42 to stiffen it. It will be noted from Figure 10 that the bridging members are handed to accomodate the opposite inclination of the slots 15a on the legs 30a, 32a of each post.
- a pair of posts 3a are assembled end to end first aligning the posts 3a so that the ends abut and the legs 30a,32a are coplanar.
- a bridging member 42 is then placed across the join between the two posts 3a so that it is in contact with each face 4 of one of the legs 30a of each post 3a.
- the connectors 17a are placed in respective apertures 11a, one on each post 3a.
- the bridging member 42 is then slid axially to bring the edge 44 into engagement with the rib 34 on each of the posts 3a and wedge the bridging member 42.
- a second bridging member 42 of opposite hand is then placed across the join and in abutment with each surface 4a of the leg 32a.
- the bridging member is again slid axially to bring its free edge into contact with the rib 34 and wedge the bridging member 42 onto the leg.
- both bridging members engaged, the posts 3a are effectively connected end to end while providing a continuous coplanar outer surface for the posts 3a.
- a similar arrangement can be utilized with the post and attachment shown in Figures 2 through 5.
- the apertures 11 and attachment means 17 may also be used to assemble alternative configurations of shelving units. It is sometimes desirable to assemble a pair of units side by side, as shown in ghosted outline in Figure 1 and in order to provide a unitary structure it is preferable to interconnect the adjacent units. As shown in Figures 14 through 16, this is readily accomplished by incorporating the attachment means 17 into a J-shaped connecting plate 50.
- the plate 50 includes a generally planar body 52 with a pair of attachment means 17b integrally formed in the body 52.
- Each attachment means includes a neck 19b and head 21b arranged to fit within the apertures 13b in respective posts lb.
- each of the necks 19b are oriented generally parallel to the axis of the posts 3b but are still able to slide partially within the slot 15b. This arrangement avoids the need for handed connecting plates 50.
- the body of the connecting plate 50 terminates in a hook 54 which is dimensioned to pass snugly around the outer edges of a pair of adjacent posts 3b.
- the hooks 54 are then effective to hold the posts 3b together and provide an integral structure.
- the plates 50 associated- with each pair of posts 3b are arranged to face in opposite directions so that the attachment means 15b of one plate 50 engages one of the posts 3b and the attachment means 15b of the other plate 50 engages the other post 3b.
- This arrangement further inhibits separation of the units 1 when subjected to relative fore and aft movement as one hook 54 of each pair of plates 50 will oppose such motion. It will be seen therefore that a simple, versatile shelving unit is provide that facilitates assembly and yet provides a stable structure.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Assembled Shelves (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5516918A JPH07508186A (ja) | 1992-04-01 | 1993-03-19 | 棚ユニット用骨組構造 |
DE69303165T DE69303165T2 (de) | 1992-04-01 | 1993-03-19 | Rahmentragwerk für regaleinheit |
KR1019940703494A KR100271081B1 (ko) | 1992-04-01 | 1993-03-19 | 선반 유니트용 골조(framework for shelving unit) |
AU38821/93A AU675218B2 (en) | 1992-04-01 | 1993-03-19 | Framework for shelving unit |
PCT/CA1993/000116 WO1993019642A1 (en) | 1992-04-01 | 1993-03-19 | Framework for shelving unit |
EP93907691A EP0633742B1 (en) | 1992-04-01 | 1993-03-19 | Framework for shelving unit |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2064656 CA2064656A1 (en) | 1992-04-01 | 1992-04-01 | Knock-down shelf unit |
CA2,064,656 | 1992-04-01 | ||
CA2,075,320 | 1992-08-05 | ||
CA 2075320 CA2075320C (en) | 1992-08-05 | 1992-08-05 | Knock-down shelf unit |
PCT/CA1993/000116 WO1993019642A1 (en) | 1992-04-01 | 1993-03-19 | Framework for shelving unit |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993019642A1 true WO1993019642A1 (en) | 1993-10-14 |
Family
ID=27169053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA1993/000116 WO1993019642A1 (en) | 1992-04-01 | 1993-03-19 | Framework for shelving unit |
Country Status (2)
Country | Link |
---|---|
KR (1) | KR100271081B1 (ko) |
WO (1) | WO1993019642A1 (ko) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5762310A (en) * | 1996-02-09 | 1998-06-09 | Schill; Francine E. | Infant seat support with a resting surface having an adjustable height |
EP1031297A1 (en) * | 1999-02-25 | 2000-08-30 | Multinox S.r.l. | Connection system for uprights and shelves in general, in particular for shelving and tables |
WO2001036761A1 (en) * | 1999-11-16 | 2001-05-25 | The Steel Construction Institute | Connecting apparatus |
US6915916B2 (en) * | 2003-04-17 | 2005-07-12 | Riccarr Displays Inc. | Apparatus and method of constructing display |
US9301610B1 (en) * | 2015-02-09 | 2016-04-05 | Christopher H. Berry | Enclosed boltless shelving system |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101856309B1 (ko) * | 2016-03-09 | 2018-06-25 | 김경현 | 변형 및 확장이 가능한 조립식 가구 |
KR101840257B1 (ko) * | 2016-11-09 | 2018-03-20 | 김선태 | 조립식 앵글 |
KR102193464B1 (ko) * | 2017-12-08 | 2020-12-22 | 주식회사 태강이엔지 | 조립식 랙 선반 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB856474A (en) * | 1958-04-25 | 1960-12-14 | Nordverk Ab | Improvements in or relating to releasable frame connecting means for shelving, etc |
GB864123A (en) * | 1959-12-12 | 1961-03-29 | Nancy Hobson | Improvements in or relating to arrangements for use in supporting brackets or shelves |
FR1294322A (fr) * | 1961-04-14 | 1962-05-26 | Casier métallique démontable | |
BE822660A (nl) * | 1973-05-04 | 1975-03-14 | Uitneembaar raamwerk | |
FR2392627A1 (fr) * | 1977-06-01 | 1978-12-29 | Schaefer Gmbh Fritz | Rayonnage demontable |
FR2461841A1 (fr) * | 1979-07-17 | 1981-02-06 | Strong Block Spa | Dispositif d'assemblage pour relier une console a un montant d'etageres metalliques |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS568509Y2 (ko) * | 1976-05-14 | 1981-02-24 |
-
1993
- 1993-03-19 KR KR1019940703494A patent/KR100271081B1/ko not_active IP Right Cessation
- 1993-03-19 WO PCT/CA1993/000116 patent/WO1993019642A1/en active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB856474A (en) * | 1958-04-25 | 1960-12-14 | Nordverk Ab | Improvements in or relating to releasable frame connecting means for shelving, etc |
GB864123A (en) * | 1959-12-12 | 1961-03-29 | Nancy Hobson | Improvements in or relating to arrangements for use in supporting brackets or shelves |
FR1294322A (fr) * | 1961-04-14 | 1962-05-26 | Casier métallique démontable | |
BE822660A (nl) * | 1973-05-04 | 1975-03-14 | Uitneembaar raamwerk | |
FR2392627A1 (fr) * | 1977-06-01 | 1978-12-29 | Schaefer Gmbh Fritz | Rayonnage demontable |
FR2461841A1 (fr) * | 1979-07-17 | 1981-02-06 | Strong Block Spa | Dispositif d'assemblage pour relier une console a un montant d'etageres metalliques |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5762310A (en) * | 1996-02-09 | 1998-06-09 | Schill; Francine E. | Infant seat support with a resting surface having an adjustable height |
EP1031297A1 (en) * | 1999-02-25 | 2000-08-30 | Multinox S.r.l. | Connection system for uprights and shelves in general, in particular for shelving and tables |
WO2001036761A1 (en) * | 1999-11-16 | 2001-05-25 | The Steel Construction Institute | Connecting apparatus |
AU773023B2 (en) * | 1999-11-16 | 2004-05-13 | Steel Construction Institute, The | Connecting apparatus |
US6754992B1 (en) * | 1999-11-16 | 2004-06-29 | The Steel Construction Institute | Connecting apparatus |
US6915916B2 (en) * | 2003-04-17 | 2005-07-12 | Riccarr Displays Inc. | Apparatus and method of constructing display |
US9301610B1 (en) * | 2015-02-09 | 2016-04-05 | Christopher H. Berry | Enclosed boltless shelving system |
Also Published As
Publication number | Publication date |
---|---|
KR950700696A (ko) | 1995-02-20 |
KR100271081B1 (ko) | 2000-11-01 |
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