The present invention provides an inexpensive adjustable leg for furniture that can be used to alter the height of items of furniture, such as tables and desks used in education facilities, to accommodate persons of a wide range of height and ages. The adjustable leg comprises an outer sleeve within which an inner leg is slidably disposed. A protrusion provided to the interior of the outer sleeve interacts with a groove and recesses, corresponding to desired height settings, configured in the inner leg. A biasing member provided to the adjustable leg acts against a surface of the inner leg while mounted to the outer sleeve, urging the inner leg against the protrusion and facilitating easy engagement with the recesses.

A workstation for alternatively configuring a conventional desk for use while sitting and use while standing. The workstation includes an extendable column formed of multiple nested sections. The nested sections are configured to telescope such that the column can be extended. The workstation is configured to support a monitor and a tray. The extendable column contains a counter balance mechanism that is configured to resist collapsing of the column. A movement coupling mechanism is provided that it is such that motion of the first section relative to the second section is transmitted to the third section such that the third section moves a corresponding amount relative to the second section.

A workstation for alternatively configuring a conventional desk for use while sitting and use while standing. The workstation includes an extendable column formed of multiple nested sections. The nested sections are configured to telescope such that the column can be extended. The workstation is configured to support a monitor and a tray. The extendable column contains a counter balance mechanism that is configured to resist collapsing of the column. A movement coupling mechanism is provided that it is such that motion of the first section relative to the second section is transmitted to the third section such that the third section moves a corresponding amount relative to the second section.

An elevation working platform comprises a lower support and an upper support. At least one group of X-type elevation mechanisms is provided between the lower support and the upper support. The elevation working platform further comprises an elastic element. A first end of the elastic element is connected between two end points of a first support rod or a second support rod. A second end of the elastic element is connected to the lower support or a second hinging seat capable of sliding relative to the lower support. By means of the X-type elevation mechanisms, the front and back positions of the upper support does not change in an elevating process of the upper support, the structure is simple and practical, and the cost is relatively low.

An elevation working platform comprises a lower support and an upper support. At least one group of X-type elevation mechanisms is provided between the lower support and the upper support. The elevation working platform further comprises an elastic element. A first end of the elastic element is connected between two end points of a first support rod or a second support rod. A second end of the elastic element is connected to the lower support or a second hinging seat capable of sliding relative to the lower support. By means of the X-type elevation mechanisms, the front and back positions of the upper support does not change in an elevating process of the upper support, the structure is simple and practical, and the cost is relatively low.

A height-adjustable frame comprises a first leg element with a first support section, a first foot section and a first adjustment arrangement and a second leg element with a second support section, a second foot section and a second adjustment arrangement. The first support section and the first foot section can be moved relative to each other by means of the first adjustment arrangement. The second support section and the second foot section can be moved relative to each other by means of the second adjustment arrangement. The first leg element can be pivoted about a first pivot axis and the second leg element can be pivoted about a second pivot axis. The frame also has a locking structure and a rotatable shaft arranged between the first leg element and the second leg element to synchronously drive the first adjustment arrangement and the second adjustment arrangement. The shaft comprises a middle section, a first end section pivotable towards the middle section about a first joint axis and a second end section pivotable towards the middle section about a second joint axis. The locking structure locks the first leg element and the second leg element in a folded-out position when the joint axes do not run at least approximately parallel to the pivot axes or, in particular, at least approximately coincide. The locking structure can be unlocked when the joint axes run at least approximately parallel to the pivot axes and, in particular, at least approximately coincide so that the first leg element and the second leg element can be pivoted into a folded-in position.

A height-adjustable frame comprises a first leg element with a first support section, a first foot section and a first adjustment arrangement and a second leg element with a second support section, a second foot section and a second adjustment arrangement. The first support section and the first foot section can be moved relative to each other by means of the first adjustment arrangement. The second support section and the second foot section can be moved relative to each other by means of the second adjustment arrangement. The first leg element can be pivoted about a first pivot axis and the second leg element can be pivoted about a second pivot axis. The frame also has a locking structure and a rotatable shaft arranged between the first leg element and the second leg element to synchronously drive the first adjustment arrangement and the second adjustment arrangement. The shaft comprises a middle section, a first end section pivotable towards the middle section about a first joint axis and a second end section pivotable towards the middle section about a second joint axis. The locking structure locks the first leg element and the second leg element in a folded-out position when the joint axes do not run at least approximately parallel to the pivot axes or, in particular, at least approximately coincide. The locking structure can be unlocked when the joint axes run at least approximately parallel to the pivot axes and, in particular, at least approximately coincide so that the first leg element and the second leg element can be pivoted into a folded-in position.

A portable workstation apparatus includes: a pair of collapsible legs; and a work portion that is attached in a removable manner to the pair of collapsible lags via a pair of brackets. Each leg of the pair of collapsible legs includes: a frame; an extension connected to a first end of the frame; a lower post housed within a sleeve; an upper post; a hinge connecting the lower post and the upper post; a first brace connecting the extension to the sleeve; and a plurality of holes on an exterior face of the lower post or the upper post. Each leg is configured to collapse by folding the upper post towards the lower post via the hinge and rotating the extension toward the lower post.

A portable workstation apparatus includes: a pair of collapsible legs; and a work portion that is attached in a removable manner to the pair of collapsible lags via a pair of brackets. Each leg of the pair of collapsible legs includes: a frame; an extension connected to a first end of the frame; a lower post housed within a sleeve; an upper post; a hinge connecting the lower post and the upper post; a first brace connecting the extension to the sleeve; and a plurality of holes on an exterior face of the lower post or the upper post. Each leg is configured to collapse by folding the upper post towards the lower post via the hinge and rotating the extension toward the lower post.

A portable deployable table is a device that may be easily mounted to and removed from a surface or structure. The device includes a housing with at least one telescopic arm fixed within the housing. A table frame and a planar table top are hingedly connected to the at least one telescopic arm and may be deployed after being extended from within the housing. The table frame and the planar table top are contained within the housing when the device is not in use. At least one adjustable mounting brace is connected to the exterior of the housing, allowing the housing to be mounted to a surface or structure and fixed in place. The housing may be closed via a housing lid that covers the interior of the housing.