CA2199316C - Adjustable height tables - Google Patents
Adjustable height tables Download PDFInfo
- Publication number
- CA2199316C CA2199316C CA 2199316 CA2199316A CA2199316C CA 2199316 C CA2199316 C CA 2199316C CA 2199316 CA2199316 CA 2199316 CA 2199316 A CA2199316 A CA 2199316A CA 2199316 C CA2199316 C CA 2199316C
- Authority
- CA
- Canada
- Prior art keywords
- leg
- work table
- height adjustable
- bracket
- work
- 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 - Fee Related
Links
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
- A47B9/00—Tables with tops of variable height
- A47B9/14—Tables with tops of variable height with pins coacting with holes
Landscapes
- Tables And Desks Characterized By Structural Shape (AREA)
- Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
Abstract
A height adjustable work table comprises a work surface and at least three adjustable leg arrangements supporting said work surface. Each leg arrangement comprises a curved leg supported in a leg bracket attached beneath the work surface. Each leg bracket is an open channel having predetermined support positions for engaging the curved leg with fasteners for releasably securing the leg in any of the support positions.beta.
Description
' WH-9 3 TITLE: ADJUSTABLE H~IGHT TABLES
FIELD OF THE INVENTION
The present invention relates to adjustable height tables and in particular, relates to adjustable height tables for office desks, work tables and conference tables.
BACKGROUND OF THE INVENTION
There are many examples of height adjustable tables ~0 for use in association with a work station. Computer stations are, perhaps, the best examples of work surfaces which are height-adjustable and can include either a mechanical counter-balancing arrangement, electrical drive arrangements or hydraulic arrangements for controlling the ~5 height of the work surface. There are also many telescopic legs for providing variable heights. The present invention provides a simple mechanical arrangement for varying the height of a work surface, such as a table or mobile table, which is relatively inexpensive to use, and provides increased stability as the height of the table increases.
SUMMARY OF THE INVENTION
A height adjustable work table, according to the present invention, comprises a work surface and at least three adjustable leg arrangements supporting the work surface. Each leg arrangement comprises a curve leg supported in the leg bracket attached beneath the work surface. The leg bracket is an open channel having predetermined support positions for engaging the curved leg with means for releasably securing said leg in any of the support positions.
21 q93~ 5 According to an aspect of the invention, the curved leg is angled outwardly at the top thereof and is integral with a generally vertical lower section which terminates within the downward projection of the work surface.
According to a further aspect of the invention, each leg arrangement increases the support base as the height of the table is increased.
.0 BRIEF DESCRIPTIOM OF THE DRAWINGS
Preferred embodiments of the invention are shown in the drawings, wherein:
Figure 1 is a perspective view of a height-adjustable table having two opposed leg pairs;
Figure 2 is perspective in view of the table in Figure l;
Figure 3 is an inside view of the table of Figure 2;
Figure 4 is a side view of the paired leg arrangement;
Figure 5 shows details of the securement of the curve leg 2 of the channel bracket;
Figure 6 is a side view of a single leg 2~ arrangementi Figure 7 is an end view of the leg of Figure 6;
Figure 8 is a further side view of the single leg arrangement;
WH-9~3 2 1 9 9 3 t ~
Figure 9 is a front view of the single leg arrangement; and Figure 10 shows the single leg arrangement secured to a generally triangular conference table.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The height-adjustable table and the paired leg arrangement shown in Figures 1 through 4, define a height-adjustable table to having wo~k surface 4. At opposite ends of the work surface and positioned slightly inwardly of the edges thereof, are two opposed paired leg arrangements 10. Each paired leg arrangement includes two curved legs 12 where each leg has a curved transition 14, approximately one foot above the base of the leg, which transition joins the generally straight upper section 16 and the generally straight lower section 18, as shown in Figure 3. The straight upper section is at an angle relative to a vertical and it is received in a similarly angled channel-shaped leg support bracket 30. The generally straight upper leg section 16 allows movement of the leg within the channel-shaped leg support bracket and is securable to this bracket at a number of points, as will subsequently be described. It should be noted that as the leg is moved within the channel-shaped leg support 30, the base of the table increases and decreases. For example, if the leg is moved downwardly the channel-shaped leg support bracket, the castor associated with the leg is moved slightly outwardly, increasing the base of the table. This is desirable as the height of the table has increased and thus, the stability of the table is generally maintained.
It should also be noted that the legs are positioned slightly inwardly of the edges of the work surface, such that the legs are still within the footprint of the work surface WH-9~ 2199316 Each channel-shaped leg support 30 has opposed sides 32 which support the side edges 13 of the leg 12 on the portion of the leg which overlaps with the channel-shaped leg support bracket. The leg 12 is secured to the channel 30 by means o~ screw fasteners 32 which pass through the rear of the channel-shaped leg support bracket and engage the leg 12. The actual shape of the channel 30 includes inwardly directed surfaces 34 which engage the back surface 15 of the leg with a further strengthening channel 36 which extends inwardly of surfaces 34. This stiffens the channel-shaped leg support bracket. As previously described, the leg can be secured to the leg support bracket 30 at a number of different positions. The back surface 35 of the leg can have ports provided therein for corroboration with fasteners 52. These fasteners cooperate with a series of ports 54 provided in the strengthening channel 36 as indicated in Figure 7. The actual fasteners 52 used the appropriate ports for engaging ports in the leg 12.
As can be appreciated, there may be a gap at the top of the channel-shaped leg support bracket, if the table is above a m;n;ml]m position. Functionally, this is acceptable, however, from an appearance point of view, a cover 50 overlaps with the leg 12 and conceals what would otherwise be the exposed channel 30 above the leg.
The side view of the single leg embodiment o~
Figure 6 shows how the leg is fastened to the channel-shaped leg support bracket 30 by fasteners 52. If the legis released from the channel 30 and adjusted to provide an increase in the height of the table, the leg moves slightly outwardly as indicated by arrow 19. This then increases the base of the table. If the height of the table is ,9773 21 9q3t ~
FIELD OF THE INVENTION
The present invention relates to adjustable height tables and in particular, relates to adjustable height tables for office desks, work tables and conference tables.
BACKGROUND OF THE INVENTION
There are many examples of height adjustable tables ~0 for use in association with a work station. Computer stations are, perhaps, the best examples of work surfaces which are height-adjustable and can include either a mechanical counter-balancing arrangement, electrical drive arrangements or hydraulic arrangements for controlling the ~5 height of the work surface. There are also many telescopic legs for providing variable heights. The present invention provides a simple mechanical arrangement for varying the height of a work surface, such as a table or mobile table, which is relatively inexpensive to use, and provides increased stability as the height of the table increases.
SUMMARY OF THE INVENTION
A height adjustable work table, according to the present invention, comprises a work surface and at least three adjustable leg arrangements supporting the work surface. Each leg arrangement comprises a curve leg supported in the leg bracket attached beneath the work surface. The leg bracket is an open channel having predetermined support positions for engaging the curved leg with means for releasably securing said leg in any of the support positions.
21 q93~ 5 According to an aspect of the invention, the curved leg is angled outwardly at the top thereof and is integral with a generally vertical lower section which terminates within the downward projection of the work surface.
According to a further aspect of the invention, each leg arrangement increases the support base as the height of the table is increased.
.0 BRIEF DESCRIPTIOM OF THE DRAWINGS
Preferred embodiments of the invention are shown in the drawings, wherein:
Figure 1 is a perspective view of a height-adjustable table having two opposed leg pairs;
Figure 2 is perspective in view of the table in Figure l;
Figure 3 is an inside view of the table of Figure 2;
Figure 4 is a side view of the paired leg arrangement;
Figure 5 shows details of the securement of the curve leg 2 of the channel bracket;
Figure 6 is a side view of a single leg 2~ arrangementi Figure 7 is an end view of the leg of Figure 6;
Figure 8 is a further side view of the single leg arrangement;
WH-9~3 2 1 9 9 3 t ~
Figure 9 is a front view of the single leg arrangement; and Figure 10 shows the single leg arrangement secured to a generally triangular conference table.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The height-adjustable table and the paired leg arrangement shown in Figures 1 through 4, define a height-adjustable table to having wo~k surface 4. At opposite ends of the work surface and positioned slightly inwardly of the edges thereof, are two opposed paired leg arrangements 10. Each paired leg arrangement includes two curved legs 12 where each leg has a curved transition 14, approximately one foot above the base of the leg, which transition joins the generally straight upper section 16 and the generally straight lower section 18, as shown in Figure 3. The straight upper section is at an angle relative to a vertical and it is received in a similarly angled channel-shaped leg support bracket 30. The generally straight upper leg section 16 allows movement of the leg within the channel-shaped leg support bracket and is securable to this bracket at a number of points, as will subsequently be described. It should be noted that as the leg is moved within the channel-shaped leg support 30, the base of the table increases and decreases. For example, if the leg is moved downwardly the channel-shaped leg support bracket, the castor associated with the leg is moved slightly outwardly, increasing the base of the table. This is desirable as the height of the table has increased and thus, the stability of the table is generally maintained.
It should also be noted that the legs are positioned slightly inwardly of the edges of the work surface, such that the legs are still within the footprint of the work surface WH-9~ 2199316 Each channel-shaped leg support 30 has opposed sides 32 which support the side edges 13 of the leg 12 on the portion of the leg which overlaps with the channel-shaped leg support bracket. The leg 12 is secured to the channel 30 by means o~ screw fasteners 32 which pass through the rear of the channel-shaped leg support bracket and engage the leg 12. The actual shape of the channel 30 includes inwardly directed surfaces 34 which engage the back surface 15 of the leg with a further strengthening channel 36 which extends inwardly of surfaces 34. This stiffens the channel-shaped leg support bracket. As previously described, the leg can be secured to the leg support bracket 30 at a number of different positions. The back surface 35 of the leg can have ports provided therein for corroboration with fasteners 52. These fasteners cooperate with a series of ports 54 provided in the strengthening channel 36 as indicated in Figure 7. The actual fasteners 52 used the appropriate ports for engaging ports in the leg 12.
As can be appreciated, there may be a gap at the top of the channel-shaped leg support bracket, if the table is above a m;n;ml]m position. Functionally, this is acceptable, however, from an appearance point of view, a cover 50 overlaps with the leg 12 and conceals what would otherwise be the exposed channel 30 above the leg.
The side view of the single leg embodiment o~
Figure 6 shows how the leg is fastened to the channel-shaped leg support bracket 30 by fasteners 52. If the legis released from the channel 30 and adjusted to provide an increase in the height of the table, the leg moves slightly outwardly as indicated by arrow 19. This then increases the base of the table. If the height of the table is ,9773 21 9q3t ~
3~:
decreased, the bottom of the leg moves slightly inwardly as indicated by arrow 21.
The single leg embodiment of Figures 6 through 10 5 also includes a connecting gusset 40 which is secured to the back of the channel-shaped leg support bracket 30 and is also fastened to the work surface support bracket 46.
In the case of the paired leg arrangement 10 of Figures 1 through 4, the connecting gusset 40 is continuous between L0 the two channel-shaped leg support brackets.
The embodiment, as shown in Figure 1, illustrates a horizontal work surface 4, however, if desired, the rear legs of the table may be secured with a slightly different 15 position increasing the height of the rear edge o~ the table, relative to the front edge of the table. This then defines an angled work surface which may be desirable for drafting or other applications. It can also be appreciated that the table could be angled upwardly or downwardly from 20 end to end, if desired, by the appropriate setting of the legs 12.
The single leg design of Figures 6 through g is particularly advantageous with respect to tables which do 25 not have a rectangular top surface. For example, the table as shown in Figure 10, has three separate legs, each of which is disposed at a different angle, relative to the work surface.
The present invention provides a convenient cost effective structure for allowing the height of a table to be increased or decreased. It uses a simple mechanical 219~316 WH- 9~3 design and it also allows for adjustment of the size of the base as the height o~ the table increases. The curved lower section of the leg also allows the table to generally stay within the footprint of the work surface and thus, does not prove an obtrusive leg. Also this design allows the support bracket atop the leg to be placed inwardly of the edge of the table and is less obtrusive.
Although various preferred embodiments of the present invention have been described herein in detail, it will be appreciated by those skilled in the art, that variations may be made thereto without departing from the spirit of the invention or the scope of the appended claims.
decreased, the bottom of the leg moves slightly inwardly as indicated by arrow 21.
The single leg embodiment of Figures 6 through 10 5 also includes a connecting gusset 40 which is secured to the back of the channel-shaped leg support bracket 30 and is also fastened to the work surface support bracket 46.
In the case of the paired leg arrangement 10 of Figures 1 through 4, the connecting gusset 40 is continuous between L0 the two channel-shaped leg support brackets.
The embodiment, as shown in Figure 1, illustrates a horizontal work surface 4, however, if desired, the rear legs of the table may be secured with a slightly different 15 position increasing the height of the rear edge o~ the table, relative to the front edge of the table. This then defines an angled work surface which may be desirable for drafting or other applications. It can also be appreciated that the table could be angled upwardly or downwardly from 20 end to end, if desired, by the appropriate setting of the legs 12.
The single leg design of Figures 6 through g is particularly advantageous with respect to tables which do 25 not have a rectangular top surface. For example, the table as shown in Figure 10, has three separate legs, each of which is disposed at a different angle, relative to the work surface.
The present invention provides a convenient cost effective structure for allowing the height of a table to be increased or decreased. It uses a simple mechanical 219~316 WH- 9~3 design and it also allows for adjustment of the size of the base as the height o~ the table increases. The curved lower section of the leg also allows the table to generally stay within the footprint of the work surface and thus, does not prove an obtrusive leg. Also this design allows the support bracket atop the leg to be placed inwardly of the edge of the table and is less obtrusive.
Although various preferred embodiments of the present invention have been described herein in detail, it will be appreciated by those skilled in the art, that variations may be made thereto without departing from the spirit of the invention or the scope of the appended claims.
Claims (15)
1. A height adjustable work table comprising a work surface and at least three adjustable leg arrangements supporting said work surface, each leg arrangement comprising a curved leg supported in a leg bracket attached beneath the work surface, and wherein each leg bracket is an open channel having predetermined support positions for engaging the curved leg with means for releasably securing said leg in any of said support positions.
2. A height adjustable work table as claimed in claim 1 wherein said curved leg is angled outwardly at the top thereof and is joined with a generally vertical lower section which terminates within the downward projection of the work surface.
3. A height adjustable table as claimed in claim 2 wherein each leg arrangement increases the support base as the height of the table is increased.
4. A height adjustable work table comprising a work table surface and at least three adjustable leg arrangements supporting said work table surface, each leg arrangement comprising a curved leg supported in a leg bracket attached to the work table surface on a bottom surface thereof, and wherein each leg bracket is an open channel having a series of predetermined support positions for engaging the curved leg with means for releasably securing said leg in any of said support positions, said open channel of each leg bracket includes in a base of said channel a longitudinally extending stiffening recess.
5. A height adjustable work table as claimed in claim 4 wherein each leg bracket is outwardly angled beneath said work table surface and each curved leg has an upper section which is outwardly angled and is joined with a generally vertical lower section.
6. A height adjustable work table as claimed in claim 5 wherein each leg arrangement increases the spacing between said legs as the height of the table is increased.
7. A height adjustable table as claimed in claim 4 wherein each leg has a bent tube body portion
8. A height adjustable table as claimed in claim 4 wherein said open channel of each leg bracket projects outwardly and downwardly from said work table surface and is positioned near the periphery of the work table surface.
9. A height adjustable table as claimed in claim 8 wherein said series of predetermined support positions of each leg bracket is a series of ports spaced in the length of said stiffening recess and each leg includes securing ports_appropriately spaced for alignment with said series of ports.
10. A height adjustable table as claimed in claim 4 wherein each leg bracket at an upper end thereof includes a top plate which forms part of the securement with a bottom portion of said work table surface, each top plate having a series of holes therein which receive fasteners used to secure said top plate to said work table surface.
11. A height adjustable table as claimed in claim 8 wherein each leg bracket at an upper end thereof includes a top plate sized to distribute forces between said leg and said work table surface and said open channel of each leg bracket is attached to said respective top plate and a reinforcing strut further connects said top plate and said open channel.
12. A height adjustable work table comprising a work table surface and at least three adjustable leg arrangements supporting said work table surface, each leg arrangement comprising a curved leg supported in a leg bracket attached to the work table surface on a bottom surface thereof, and wherein each leg bracket is an open channel having a series of predetermined support positions for engaging the curved leg with means for releasably securing said leg in any of said support positions, and each leg arrangement including a cover member closing said open channel between an upper surface of said leg and said work surface.
13. A height adjustable table as claimed in claim 12 wherein said cover of each leg arrangement is maintained in place by the securement of said leg to said leg bracket.
14. A height adjustable work table as claimed in claim 4 wherein said table has two pairs of legs and each pair of legs has the leg brackets thereof integral with a common strut joining the upper ends of each leg bracket.
15. A height adjustable work table as claimed in claim 14 wherein each common strut is a plate member having an arched lower surface extending between said open channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2199316 CA2199316C (en) | 1997-03-06 | 1997-03-06 | Adjustable height tables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2199316 CA2199316C (en) | 1997-03-06 | 1997-03-06 | Adjustable height tables |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2199316A1 CA2199316A1 (en) | 1998-09-06 |
| CA2199316C true CA2199316C (en) | 2001-11-27 |
Family
ID=4160112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2199316 Expired - Fee Related CA2199316C (en) | 1997-03-06 | 1997-03-06 | Adjustable height tables |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2199316C (en) |
-
1997
- 1997-03-06 CA CA 2199316 patent/CA2199316C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2199316A1 (en) | 1998-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |