Articulating armrest

An armrest for an office chair comprising:

• a support with one end adapted for attachment to a chair and a tubular section extending from the one end at an angle to position the tubular section adjacent a side of the chair, the tubular section including a radially extending protrusion having a predetermined diameter;
• and
• an armrest body including an insert defining a configured recess shaped to receive the tubular section and a flange extending from the configured recess, the configured recess defining a channel with circumferentially extending side notches shaped to slidably receive the protrusion, the notches each defining an arcuate path so that the protrusion is selectively movable into and out of said notches by rotating said armrest body on said support, at least some of the notches being oriented and positioned in the configured recess so that a weight of the armrest body assists in holding the protrusion in a selected one of the side notches by gravity.

An armrest for an office chair comprising:

• a support having a tubular section and at least one radially extending protrusion;
• and
• an armrest body including an insert defining a configured recess, and further including a molded polymeric body covering the insert, the configured recess defining a tubular cavity having a length and spaced apart ring-shaped surfaces along the length, and the molded polymeric body including molded material in the tubular cavity forming bearing surfaces therein up to the ring-shaped surfaces, said bearing surfaces slidably engaging and supporting the tubular section, the configured recess also defining a slot operably receiving the protrusion, so that the armrest body can be moved to selected positions on the tubular section by selectively engaging the protrusion with parts of the slot.

An armrest structure comprising:

• an armrest body having a configured recess, the configured recess including a bore-shaped recess defined by a cylindrically shaped first surface with a first diameter and a longitudinal axis, a circumferentially extending second surface having a larger second diameter so as to define a radially extending recess in the first surface that extends partially around and partially along the longitudinal axis, and notch-defining surfaces that extend between the first and second surfaces to form stops;
• and
• a support including a cylindrically shaped third surface having the first diameter and that slidably engages the first surface so that the armrest body is rotatable on the support, and including a radially extending protrusion configured to selectively abut the notch-defining surfaces to limit the rotation of the armrest body on the support.

A chair assembly comprising:

• a chair having a seat with a side edge;
• and
• an adjustable armrest attached to the chair including a support with a generally horizontally oriented tubular section having a forwardly extending free end, and an armrest body rotatably mounted on the free end of the tubular section, said armrest body moveable between a first position wherein a first surface of the armrest body is oriented generally over and partially inboard of the side edge of the chair for supporting a user's forearm, and a second position wherein a second surface of the armrest body is oriented generally over and partially outboard of the side edge of the chair for supporting the user's forearm and further wherein said second position has a rotational orientation different from said first position with respect to the chair, said free end being spaced above the seat so that a user can move their legs partially under the armrest while seated in the chair.

An armrest body for a chair comprising:

• a reinforcement insert including a tubular portion defining a configured recess with at least one stop therein, and including a flange portion;
• and
• an aesthetic bulbously-shaped covering material substantially encapsulating said reinforcement insert.