Device positioning supports
a technology for positioning supports and devices, applied in the direction of machine supports, furniture parts, other domestic objects, etc., can solve the problems of requiring maintenance, affecting the service life of the device, and the use of two hands, so as to prevent the relative movement of the link and relieve the biasing force
Inactive Publication Date: 2011-10-13
C C & L COMPANY
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- Application Information
AI Technical Summary
Benefits of technology
[0008]According to still further embodiments of the present invention, the links are selectively elongatable in order to further extend the range of possible positions of the lamp or other device. The positioning of the links in one of their possible longitudinal configurations is also preferably controlled by a manually operable self-locking release which is selectively engageable with a third plurality of teeth. The elongatable links preferably comprise a plurality of telescoping elements.
Problems solved by technology
One disadvantage of such devices is that they often require the use of two hands in order to reposition the lamp and the forces required for the angle adjustment are usually large.
Another disadvantage is that the frictional block or shoe often wears or becomes loose over time and requires maintenance, e.g. tightening or replacement.
Method used
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[0046]The various embodiments of the present invention provide significant improvements over supports of the prior art, such as those shown in FIGS. 1 and 2. FIG. 1 illustrates one generally known configuration of the prior art wherein a lamp 1 is connected to a base 2 with a pair of parallel links 3, 4. The links 3, 4 are connected to lamp housing 1 with frictional, pivoting connections 5, 6, respectively. Links 3 and 4 are similarly pivotally connected to base 2 with frictional, pivoting connections 7, 8 respectively. The ability of a user to position lamp housing 1 in different positions relative to base 2 and the ability of the entire support to properly support the light housing 1 in any position to which it is moved depends upon the amount of friction at the frictional, pivoting connections. It will be understood that there must be sufficient friction in these connections to support lamp housing 1, particularly when lamp housing 1 is not disposed directly over base 2. The amou...
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A device positioning support for selectively positioning a device in one of a plurality of positions comprising a base, a pair of links which are each connected to the base and to a device, a manually operable self-locking release comprising a biasing member which normally biases a first constraint connected to one of the links into engagement with a second constraint connected to the other link in order to prevent relative movement of the links. The release is manually operable to relieve the biasing force and thereby permit relative movement between the first link relative to the second link in order to reposition the device.
Description
[0001]The present invention relates to device positioning supports, such as supports for lamps, which allow a device to be manually positioned in one of a plurality of positions.BACKGROUND[0002]Various devices have been previously suggested which utilize four-bar linkages or other arrangements comprising two substantially parallel links to support a useful device, such as a lamp, while permitting the selective repositioning of the lamp by the user. Such devices typically rely upon frictional engagement between the links and one or more blocks or slidable “shoes” which are intended to provide sufficient friction to support the lamp in one of a plurality of positions in which it is positioned by the user. Such devices permit the user to overcome the friction by simply forcibly moving the lamp from one position to a new desired position while causing relative movement between the links despite the friction provided by the block or shoe. One disadvantage of such devices is that they oft...
Claims
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CPCA47B23/043F16M11/046F16M11/048F16M2200/063F16M13/02F16M2200/021F16M11/10
InventorCHAN, SIK LEUNG
OwnerC C & L COMPANY