US 9,038,549 B1 · Height adjustable table

Abstract

A height adjustable table, which has a constant-force counterbalance mechanism integrated into a top assembly of the table is disclosed. The height adjustable table can include a top assembly supported by a base assembly, which can include right and left telescoping leg assemblies. The top assembly can include a work surface supported by a housing. A counterbalance mechanism, which can include a spring coupled to a snail cam pulley, can be mounted within the housing. A synchronized lift mechanism, which can include at least two bands operatively engaged with a pulley system disposed within the right and left telescoping leg assemblies, can be operatively coupled to the snail cam pulley such that the counterbalance force provided by the counterbalance mechanism is transmitted to the synchronized lift mechanism.

Claims16

Dependent claims

A height adjustable table comprising:

a top assembly comprising a housing and a work surface supported on the housing;
a constant-force counterbalance mechanism disposed within the housing;
a base assembly, which supports the top assembly, the base assembly comprising a first telescoping leg assembly and a second telescoping leg assembly, the first telescoping leg assembly and the second telescoping leg assembly each comprising an outside leg and an inside leg having a variable overlap to accommodate height adjustment of the top assembly;
and
a preload mechanism positioned within the housing and operatively coupled to the constant-force counterbalance mechanism, the preload mechanism comprising:
a gearbox having a worm wheel;
a worm meshed with the worm wheel to form a worm drive;
a hub coupled to the worm wheel;
a preload cable having a first end attached to the hub and a second end attached to the constant-force counterbalance mechanism;
and
a handle coupled to the worm drive.

8 more elements

A height adjustable table comprising:

a base assembly comprising a first telescoping leg assembly and a second telescoping leg assembly, each of the first telescoping leg assembly and the second telescoping leg assembly comprising:
an outside leg;
and
an inside leg,
one of the outside and inside legs being fixedly coupled to a stationary foot, the outside and inside legs having a variable overlap;
a top assembly supported by the base assembly, the top assembly comprising a work surface mounted to a housing;
a constant-force counterbalance mechanism positioned within the housing;
and
a synchronized lift mechanism operatively coupled to the constant-force counterbalance mechanism to provide synchronized lifting and lowering of the top assembly relative to the stationary feet of the base assembly, the synchronized lift mechanism comprising:
a first pulley assembly positioned within the first telescoping leg assembly;
a second pulley assembly positioned within the second telescoping leg assembly;
a first band operatively coupled to the first and second pulley assemblies;
a second band operatively coupled to the first and second pulley assemblies;
and
a lift cable having a first end attached to the constant-force counterbalance mechanism and a second end attached to the inside leg of one of the first and second telescoping leg assemblies.

12 more elements

Dependencies are inferred from the claim text.

Height adjustable table

Life of this patent

Height adjustable table

Life of this patent

Abstract

Claims16