Keyboard Support Mechanism

An improved auxiliary shelf mechanism for positioning an auxiliary shelf, including a means for attaching the auxiliary shelf to a desk so that the auxiliary shelf may be movably positioned relative to the desk, wherein the improvement comprises:

• an articulating arm mechanism comprising:
• a. a mounting bracket, the mounting bracket having a front end and a back end;
• b. a first arm having a rear portion and a front portion, the rear portion of the first arm being pivotally connected to the mounting bracket;
• c. a shelf bracket having a shelfing surface for supporting an auxiliary shelf thereon, the shelf bracket being away from the outer side edges of said shelving surface and being pivotally connected to the front portion of the first arm by at least one pivot positioned above the shelfing surface.
• d. a second arm having a front portion and a rear portion, the front portion of the second arm being pivotally connected to the shelf bracket and the rear portion of the second arm being a curved end portion;
• and
• e. a curved stopping surface connected to the mounting bracket, the curved stopping surface being complementary with the curved end portion such that movement of the second arm is restricted when the second arm is translated.

An improved auxiliary shelf mechanism for positioning an auxiliary shelf, including a means for attaching the auxiliary shelf to a desk so that the auxiliary shelf may be movably positioned relative to the desk, wherein the improvement comprises (a) an articulating arm mechanism comprising:

• a. a mounting bracket, the mounting bracket having a front end and a back end;
• b. a first arm having a rear portion and a front portion, the rear portion of the first arm being pivotally connected to the mounting bracket;
• c. a shelf bracket pivotally connected to the front portion of the first arm;
• d. a second arm having a front portion and a rear portion, the front portion of the second arm being pivotally connected to the shelf bracket and the rear portion of the second arm being a curved end portion;
• e. a curved stopping surface connected to the mounting bracket, the curved stopping surface being complementary with the curved end portion such that movement of the second arm is restricted by the stopping surface when the second arm is translated;
• f. said means for attaching the auxiliary shelf to a desk comprises a mounting track;
• a means for rotating the articulating arm mechanism relative to the desk comprises a swivel mechanism attached to the mounting bracket in combination with the mounting track to which the mounting bracket is slidably connected;
• and
• g. a spring for biasing the first or second arms;
• wherein the first and second arms are not parallel to each other.

An improved auxiliary shelf mechanism for positioning an auxiliary shelf, including a means for attaching the auxiliary shelf to a desk so that the auxiliary shelf may be movably positioned relative to the desk, wherein the improvement comprises:

• an articulating arm mechanism comprising:
• a. a mounting bracket, the mounting bracket having a front end and a back end;
• b. a first arm having a rear portion and a front portion, the rear portion of the first arm being pivotally connected to the mounting bracket;
• c. a shelf bracket having a shelfing surface for positioning a keyboard on top thereof, the shelf bracket being pivotally connected to the front portion of the first arm by at least one pivot positioned above the shelfing surface;
• d. a second arm having a front portion and a rear portion the front portion of the second arm being pivotally connected to the shelf bracket and the rear portion of the second arm being a curved end portion;
• e. a curved stopping surface connected to the mounting bracket, the curved stopping surface being complementary with the curved end portion such that movement of the second arm is restricted by the stopping surface when the second arm is translated;
• f. said means for attaching the auxiliary shelf to a desk comprises a mounting track;
• a swivel mechanism associated with the mounting bracket for rotating the articulating arm mechanism relative to the desk;
• the swivel mechanism positioned in combination with the mounting track to which the mounting bracket is slidably connected;
• and
• g. a spring for biasing either the first or second arm;
• wherein the first and second arms are not parallel to each other.

Apparatus for movably supporting a keyboard with respect to a workstation comprising:

• a. a keyboard support member having a generally planar keyboard support surface whose orientation is controlled with respect to a work surface of said workstation;
• said keyboard support member comprising two side pieces spaced apart by a center section, said side pieces defining aligned slots on opposite sides of the center section;
• b. a workstation engaging member the workstation engaging member having a track defining a generally linear travel path and a keyboard support carriage for movement along the track;
• c. a linkage for adjusting a relative position of the keyboard engaging member with respect to the workstation engaging member;
• and a bar connecting the keyboard support carriage and the keyboard support member, the bar having a curved end portion;
• d. a curved stopping surface connected to the workstation engaging member, the curved stopping surface being complementary with the curved end portion such that movement of the bar is restricted.