EP0467917B1 - Pedestal - Google Patents
Pedestal Download PDFInfo
- Publication number
- EP0467917B1 EP0467917B1 EP19900905608 EP90905608A EP0467917B1 EP 0467917 B1 EP0467917 B1 EP 0467917B1 EP 19900905608 EP19900905608 EP 19900905608 EP 90905608 A EP90905608 A EP 90905608A EP 0467917 B1 EP0467917 B1 EP 0467917B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arms
- socket
- pedestal
- moulded
- strips
- 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.)
- Revoked
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 235000004443 Ricinus communis Nutrition 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
- A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
Definitions
- the invention relates to pedestals and particularly, but not exclusively, to pedestals which provide bases for swivel chairs and other articles of furniture.
- GB-A-2113085 discloses pedestals, for chairs and other articles, which comprise a central socket supported in use by arms or legs extending radially therefrom.
- the socket can receive an upright column (e.g. a tube or a rod) which carries the chair or other article.
- Such pedestals are usually made of metal, the parts being welded together, or cast in one piece. It is however known to make such pedestals as plastics mouldings, the arms, in cross section, being formed as inverted U-sections whereby the upper surfaces of the arms present a rounded appearance.
- a pedestal comprises a socket for receiving an upstanding column and a plurality of arms extending radially from the socket to support it on a floor, characterised in that the socket and its supporting arms are moulded in one piece, e.g. from plastics, the arms are hollow with tops which are open when moulded, and separately formed cover strips are attached to the tops of the arms to close them.
- the invention therefore permits a pedestal to be produced mainly by a single moulding operation but with the subsequent addition of cover strips.
- the cover strips are preferably formed by moulding from plastics. They may be moulded with underlying resilient projections having detents which are engageable under abutments in the arms to hold the cover strips in place. Alternatively the cover strips may be apertured to permit the passage of resilient projections on upper strips, the projections having detents engageable under abutments in the arms to hold the cover strips and upper strips in place.
- the cover strips or upper strips may have any desired decorative or ornamental material applied to them, so that pedestals in accordance with the invention can readily be produced with a wide variety of different surface appearances on the arms.
- the pedestal For stability of the pedestal, there will normally be at least three supporting arms, but preferably the pedestal is provided with five arms.
- the ends of the arms distant from the socket are preferably provided with recesses for receiving castor wheels.
- the invention also provides a chair having a base in the form of a pedestal as hereinbefore defined, a column mounted in the socket and a seat secured to the top of the column.
- the pedestal shown in the drawings is a chair base comprising a central socket 10 from which extend five tapered supporting arms 11.
- the arms extend radially from the socket in equi-spaced relationship and in a plane normal to the axis of the socket.
- Each arm 11 is provided at its outer end with a recess 22 of circular cross-section for receiving the carrying spindle of a castor wheel 12.
- the arms 11 are moulded from plastics in one piece with the socket 10 and are, except at their end portions in the region of the recesses 22, of hollow U-shaped configuration and provided at intervals along their length with internal cross-panels (not shown) for strengthening purposes.
- each arm has flat upper and lower sides defined by the ends of a central boss 23 provided with a recess 22, an outer open-ended circular wall 24 spaced from and co-axial with the boss 23 and a plurality of radial webs 13 connecting the boss with the circular wall and extending parallel to the axis thereof.
- the recess 22 opens through the lower end of the boss 23 and communicates co-axially with a rectangular upper passageway opening through the upper end of the boss and providing steps or abutment surfaces 17 at the junction of the recess and passageway.
- the arms 11 are provided at intervals along their length with further bosses 23 of similar formation to the boss described above but without the outer wall and radial webs.
- the cover strips 14, which are otherwise similar to those of Figs. 1, 2 and 3, do not themselves carry detents but are apertured at 18 to permit the passage of resilient projections 19 on upper strips 20, which projections have detents 21 engaging below abutment surfaces 17 in the arms 11, the upper strips 20 being wider than the apertures 18 in the strips 14 so that when the detents 21 engage below the abutment surfaces the assembly of strips and arms is held securely together.
- the upper strips may also provide any desired ornamental effect.
- the socket 10 contains an upright column, e.g. a tube or shaft, carrying a seat or other object.
- the socket is conical and the bottom end the tube or shaft is correspondingly shaped so that it can be wedged in the socket.
- a pedestal incorporating the teachings of the present invention in materials other than plastics, e.g. in metals such as aluminium. Also it would be possible to construct a pedestal in which the main part is made from one material, e.g. aluminium, and the cover parts are made from plastics, and vice versa .
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Legs For Furniture In General (AREA)
Abstract
Description
- The invention relates to pedestals and particularly, but not exclusively, to pedestals which provide bases for swivel chairs and other articles of furniture.
- GB-A-2113085 discloses pedestals, for chairs and other articles, which comprise a central socket supported in use by arms or legs extending radially therefrom. The socket can receive an upright column (e.g. a tube or a rod) which carries the chair or other article. Such pedestals are usually made of metal, the parts being welded together, or cast in one piece. It is however known to make such pedestals as plastics mouldings, the arms, in cross section, being formed as inverted U-sections whereby the upper surfaces of the arms present a rounded appearance.
- It is an object of the present invention to provide a pedestal, particularly for swivel chairs but which is capable of other uses, as a moulding, and which is more versatile than the known pedestals.
- According to the invention, a pedestal comprises a socket for receiving an upstanding column and a plurality of arms extending radially from the socket to support it on a floor, characterised in that the socket and its supporting arms are moulded in one piece, e.g. from plastics, the arms are hollow with tops which are open when moulded, and separately formed cover strips are attached to the tops of the arms to close them.
- The invention therefore permits a pedestal to be produced mainly by a single moulding operation but with the subsequent addition of cover strips.
- The cover strips are preferably formed by moulding from plastics. They may be moulded with underlying resilient projections having detents which are engageable under abutments in the arms to hold the cover strips in place. Alternatively the cover strips may be apertured to permit the passage of resilient projections on upper strips, the projections having detents engageable under abutments in the arms to hold the cover strips and upper strips in place. The cover strips or upper strips may have any desired decorative or ornamental material applied to them, so that pedestals in accordance with the invention can readily be produced with a wide variety of different surface appearances on the arms.
- For stability of the pedestal, there will normally be at least three supporting arms, but preferably the pedestal is provided with five arms.
- The ends of the arms distant from the socket are preferably provided with recesses for receiving castor wheels.
- The invention also provides a chair having a base in the form of a pedestal as hereinbefore defined, a column mounted in the socket and a seat secured to the top of the column.
- The following is a description, by way of example, of one embodiment of the invention, with reference to the accompanying schematic drawings.
-
- Fig. 1 is a perspective view of a pedestal in accordance with the invention, the pedestal being shown fitted with castor wheels;
- Fig. 2 is a sectional view, excluding the castor wheels, on line A-A of Fig. 1;
- Fig. 3 is a sectional view, excluding the castor wheels, on line B-B of Fig. 1;
- Fig. 4 is a plan view of an alternative form of main cover strip for an arm of the pedestal of Fig. 1;
- Fig. 5 is a cross sectional side view of the strip of Fig. 4;
- Fig. 6 is a cross sectional end view of the strip of Fig. 4 taken on the line A-A of Fig. 5;
- Fig. 7 is an underneath plan view of an upper or decorative strip, and
- Fig. 8 is a side view of the strip of Fig. 7.
- The pedestal shown in the drawings is a chair base comprising a
central socket 10 from which extend five tapered supportingarms 11. The arms extend radially from the socket in equi-spaced relationship and in a plane normal to the axis of the socket. Eacharm 11 is provided at its outer end with arecess 22 of circular cross-section for receiving the carrying spindle of acastor wheel 12. Thearms 11 are moulded from plastics in one piece with thesocket 10 and are, except at their end portions in the region of therecesses 22, of hollow U-shaped configuration and provided at intervals along their length with internal cross-panels (not shown) for strengthening purposes. At said end portions, each arm has flat upper and lower sides defined by the ends of acentral boss 23 provided with arecess 22, an outer open-endedcircular wall 24 spaced from and co-axial with theboss 23 and a plurality ofradial webs 13 connecting the boss with the circular wall and extending parallel to the axis thereof. Therecess 22 opens through the lower end of theboss 23 and communicates co-axially with a rectangular upper passageway opening through the upper end of the boss and providing steps orabutment surfaces 17 at the junction of the recess and passageway. Thearms 11 are provided at intervals along their length withfurther bosses 23 of similar formation to the boss described above but without the outer wall and radial webs. Longitudinally extending webs interconnect said further bosses and said cross panels in each arm and the ends of the arm and a longitudinal web may co-operate with crossing diagonal webs to interconnect theouter wall 24 and the nearest cross-panel. All of the parts hereinbefore described with reference to the drawings are moulded in one piece. The tops of the arms, which are open when moulded, are closed by separately mouldedcover strips 14 which clip into position by pairs of integral, resilient, dependingflanges 15 havingdetents 16 which project sideways and engage below theabutment surfaces 17 in thebosses 23. Thearms 11 may be provided with any desired ornamentation or decoration on the outer surfaces of their cover strips, for example in the form of thinner strips secured by adhesive. - In an alternative arrangement shown in Figures 4 to 8 of the drawings, the
cover strips 14, which are otherwise similar to those of Figs. 1, 2 and 3, do not themselves carry detents but are apertured at 18 to permit the passage ofresilient projections 19 onupper strips 20, which projections have detents 21 engaging belowabutment surfaces 17 in thearms 11, theupper strips 20 being wider than theapertures 18 in thestrips 14 so that when thedetents 21 engage below the abutment surfaces the assembly of strips and arms is held securely together. The upper strips may also provide any desired ornamental effect. - In use, the
socket 10 contains an upright column, e.g. a tube or shaft, carrying a seat or other object. Normally, the the socket is conical and the bottom end the tube or shaft is correspondingly shaped so that it can be wedged in the socket. - Clearly it would be possible to mould a pedestal incorporating the teachings of the present invention in materials other than plastics, e.g. in metals such as aluminium. Also it would be possible to construct a pedestal in which the main part is made from one material, e.g. aluminium, and the cover parts are made from plastics, and vice versa.
Claims (8)
- A pedestal comprising a socket (10) for receiving an upstanding column and a plurality of arm (11) extending radially from the socket (10) to support it on a floor, characterised in that the socket (10) and its supporting arms (11) are moulded in one piece, the arms (11) are hollow with tops which are open when moulded, and separately formed cover strips (14) are attached to the tops of the arms (11) to close them.
- A pedestal according to claim 1 characterised in that the socket (10) and supporting arms (11) are moulded from plastics.
- A pedestal according to claim 1 or claim 2 characterised in that the cover strips (14) are formed by moulding from plastics.
- A pedestal according to claim 1 characterised in that the cover strips (14) are moulded with underlying resilient projections (19) having detents (21) which are engageable under abutments in the arms (11) to hold the cover strips (14) in place.
- A pedestal according to claim 1 characterised in that the cover strips (14) are apertured to permit the passage of resilient projections (19) on upper strips (20), the projections having detents (21) engageable under abutments in the arms (11) to hold the cover strips (14) and upper strips (20) in place.
- A pedestal according to claim 1 characterised by having five arms (11).
- A pedestal according to claim 1 characterised in that the ends of the arms (11) distant from the socket (10) are provided with recesses for receiving castor wheels.
- A chair having a base in the form of a pedestal according to claim 1, a column mounted in the socket and a seat secured to the top of the column.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90905608T ATE98100T1 (en) | 1989-04-11 | 1990-04-06 | FOOT CROSS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB898908159A GB8908159D0 (en) | 1989-04-11 | 1989-04-11 | Pedestal |
GB8908159 | 1989-04-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0467917A1 EP0467917A1 (en) | 1992-01-29 |
EP0467917B1 true EP0467917B1 (en) | 1993-12-08 |
Family
ID=10654822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900905608 Revoked EP0467917B1 (en) | 1989-04-11 | 1990-04-06 | Pedestal |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0467917B1 (en) |
CA (1) | CA2041666C (en) |
DE (1) | DE69005107T2 (en) |
ES (1) | ES2047924T3 (en) |
GB (1) | GB8908159D0 (en) |
WO (1) | WO1990011709A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9320044U1 (en) * | 1993-12-28 | 1994-02-17 | Wilhelm Link GmbH & Co KG Stahlrohrmöbel, 72469 Meßstetten | blackboard |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5454536A (en) * | 1994-01-13 | 1995-10-03 | Westinghouse Electric Corporation | Chair base assembly |
MX2021012174A (en) | 2019-04-04 | 2021-12-10 | Medway Plastics Corp | Apparatus and methods for the understructure of a chair base. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4262871A (en) * | 1979-04-06 | 1981-04-21 | Steelcase Inc. | Plastic encapsulated base |
US4440372A (en) * | 1981-03-18 | 1984-04-03 | Haworth, Inc. | Bellows mounting arrangement for swivel chair |
GB2113085A (en) * | 1981-10-26 | 1983-08-03 | Mueble Sa Ing | Chair support base |
DE3618636A1 (en) * | 1986-06-03 | 1987-12-10 | Wilde & Spieth Gmbh & Co | Stand of a swivel chair |
-
1989
- 1989-04-11 GB GB898908159A patent/GB8908159D0/en active Pending
-
1990
- 1990-04-06 CA CA 2041666 patent/CA2041666C/en not_active Expired - Fee Related
- 1990-04-06 WO PCT/GB1990/000526 patent/WO1990011709A1/en not_active Application Discontinuation
- 1990-04-06 ES ES90905608T patent/ES2047924T3/en not_active Expired - Lifetime
- 1990-04-06 DE DE90905608T patent/DE69005107T2/en not_active Revoked
- 1990-04-06 EP EP19900905608 patent/EP0467917B1/en not_active Revoked
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9320044U1 (en) * | 1993-12-28 | 1994-02-17 | Wilhelm Link GmbH & Co KG Stahlrohrmöbel, 72469 Meßstetten | blackboard |
Also Published As
Publication number | Publication date |
---|---|
DE69005107D1 (en) | 1994-01-20 |
WO1990011709A1 (en) | 1990-10-18 |
CA2041666A1 (en) | 1990-10-12 |
ES2047924T3 (en) | 1994-03-01 |
GB8908159D0 (en) | 1989-05-24 |
CA2041666C (en) | 1994-03-29 |
EP0467917A1 (en) | 1992-01-29 |
DE69005107T2 (en) | 1994-04-21 |
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