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Multi-Position Work Tables

a work table and multi-position technology, applied in the field of furniture, can solve the problems of compulsion of users, undesirable weight and considerable extra cost, and undesirable jack-actuation for many users

Inactive Publication Date: 2007-11-22
CARRABBA STEPHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0042] The apparatus is a unique combination of cooperating support arms and linkages that maintain the work surface in a horizontal position throughout its range of motion. The unique linkage provides better strength geometry than other linkage designs and pivots about virtual centers in imaginary space to create a smaller overall form factor that takes up less space in the workplace.

Problems solved by technology

Mechanical and hydraulic jacks have been suggested, but they often compel the user to provide exhausting hand-cranking or careful monitoring of electrical pump controls.
Moreover, such jacks introduce undesirable weight and considerable extra cost, making such jack-actuation undesirable for many users.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

first and second embodiments

[0045] Comparison of FIGS. 1E and 2E shows that tabletop 20 is supported in both the first and the second preferred embodiments by a pivoted linkage 21, which itself is pivotally mounted on column 22, upstanding from base 24.

[0046] In each embodiment a gas spring piston-cylinder assembly 55 has its ends pivotally connected to column 22 and to linkage 21.

[0047] The pivotally connected components forming linkage 21 are very similar in both the first and the second preferred embodiments. This is confirmed by comparing the exploded views of FIG. 1F and FIG. 2F, where the various comparable components are arrayed side by side in these two FIGURES. The pivoted interconnections of each of these linkage components with the next is clearly shown in the assembled views of FIGS. 1E and 2E, and their articulated movement is shown in FIGS. 3A-3F.

[0048] Thus, for the first embodiment, a central member is the cantilever arm 29, shown to be U-shaped in FIG. 1F, having rear pivot point 31, joinin...

second embodiment

Pivoted Components of Second Embodiment

[0055] As shown in FIGS. 2E and 2F, the same components are connected in much the same fashion in the second preferred embodiment as they are in the first preferred embodiment, and the pivoting articulation of these components of linkage 21 is shown in the six successive diagrams of FIGS. 4A through 4F, and in FIGS. 6, 7 and 8.

[0056] Accordingly, the foregoing description of the linkage components of the first preferred embodiment is equally applicable to those of the second, and the corresponding components and pivot points have been given the same reference numerals in the FIGURES.

[0057] Cantilever arm 29 is V-shaped and bell crank 34 is generally triangular, but these do not change their function or cooperation.

Operation of the Gas Spring Piston-Cylinder

[0058] When the gas spring piston-cylinder 55 is ideally pressurized for the total weight of the tabletop, opening the control valve 48 will allow the tabletop to “float” with minimum han...

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PUM

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Abstract

A compact height adjustable work station utilizes a unique combination of support arms and linkages to achieve greater strength and a greater range of tabletop height adjustment from a smaller form factor than is found anywhere in the industry. The method for adjusting the work surface height is user operated and pressure assisted whereby the user requires a minimal effort to physically lift or lower the work surface to the desired tabletop height. The pressure assist can be variably located to counterbalance different tabletop weights. For automatic counterbalancing, an elongated extensible gas spring piston-cylinder is adapted to be locked in any of its continuous range of infinite adjusted positions. Manual unclamping frees the counterbalancing gas spring for readily changed, manual tabletop height level adjustment. A mid-range level or a high tabletop level may be achieved, adjusted by unclamping and minimum manual force.

Description

FIELD OF THE INVENTION [0001] This invention relates generally to tables in the furniture field and, more specifically, to ergonomically designed office and industrial work stations. [0002] The invention provides height adjustable multiple-position worktable levels producing ergonomic benefits to workers of various size while they are performing various work tasks. Research has shown that adapting a work station to the reach and viewing needs of a worker increases productivity and reduces the occurrence of injury. [0003] The preferred embodiments of the invention are extremely economical to manufacture and readily operated by the user to achieve prompt and efficient movement of the tabletop between an infinite number of different level positions. [0004] Mechanical and hydraulic jacks have been suggested, but they often compel the user to provide exhausting hand-cranking or careful monitoring of electrical pump controls. Moreover, such jacks introduce undesirable weight and considera...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A47B9/00A47B9/02
CPCA47B9/02
Inventor SWAIN, STEPHEN C.
Owner CARRABBA STEPHEN
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