Suspension system for personal computers and monitors

• US 4,836,478 A
• Filed: 10/15/1987
• Issued: 06/06/1989
• Est. Priority Date: 10/15/1987
• Status: Expired due to Term

• Current Assignee: Ergotron Incorporated (Melrose Industries Plc)
• Original Assignee: Ergotron Incorporated (Melrose Industries Plc)
• Inventors: Sweere, Harry C.
• Primary Examiner(s): Foss, J. Franklin
• Assistant Examiner(s): OLSON, ROBERT
• Application Number:
  US07/109,028
• Time in Patent Office: 600 Days
• Field of Search: 248/581, 248/585, 248/586, 248/589, 248/646, 248/648, 248/660, 248/661, 248/662, 248/122, 248/123.1, 248/124, 248/125, 248/278, 248/279, 248/280.1, 248/281.1 , 248/285, 248/286, 248/323, 248/324, 248/325, 248/1 C, 248/1 E, 248/1 F, 248/1 H, 248/1 I
• US Class Current: 248/279.1
• CPC Class Codes: A47B 21/00 Tables or desks for office equipment, e.g. typewriters, keyboards
• CPC Class Codes: F16M 11/08 around a vertical axis , e.g. panoramic heads F16M11/12 takes precedence
• CPC Class Codes: F16M 11/2021 around a horizontal axis F16M11/2035 takes precedence
• CPC Class Codes: F16M 11/2092 comprising means allowing depth adjustment, i.e. forward-backward translation of the head relatively to the undercarriage
• CPC Class Codes: F16M 13/02 for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
• CPC Class Codes: F16M 2200/068 being part of the undercarriage
• CPC Class Codes: Y10S 248/92 Angular and linear video display screen support adjustment

Abstract

A suspension system for a personal computer or monitor comprising a carriage in which the monitor or computer is mounted, the carriage being supported from above by a frictionally secured swivel and tilt mechanism in turn attached to a pivotable and rotatable support arm. The support arm is balanced by an adjustable pneumatic pressure cylinder, and is mounted on a roller assembly such that it may be carried along a path defined by a track assembly, thereby permitting the monitor or computer to be transported between first and second positions, as well as simultaneously being raised or lowered vertically, tilted, rotated, or swiveled. The track assembly may be attached to the underside of a shelving unit and incorporated into a modular partition system, or attached to a freestanding frame.

Claims

1. A suspension system for positioning and supporting a display device of a personal computer above a work surface, the suspension system comprising:

a carriage to receive the display device therein;

a tilt and swivel mechanism attached to and extending above said carriage, said tilt and swivel mechanism allowing said carriage to be tilted and rotated relative to the work surface;

a parallelogram linkage system including first and second substantially parallel suspension arms, each said arm having a distal end and a proximal end and said linkage system carrying said tilt and swivel mechanism adjacent said distal ends of said arms;

a pivot housing, said pivot housing being pivotably fastened to and supporting said suspension arms at said proximal ends thereof;

a truck member pivotably mounting said pivot housing;

tracking means, said truck member being mounted for movement along said tracking means, said carriage, said mechanism, said linkage system and said housing being movable between a first position disposed over the work surface and a second position displaced from said first position as said truck member is moved relative to said tracking means;

a support frame member, said tracking means being attached to said frame member;

a pressure cylinder for urging said carriage and the display device upwardly in a generally vertical direction away from the work surface and having first and second ends spaced apart by a length, said first end of said pressure cylinder being mounted adjacent to the distal end of said first suspension arm and said second end of said pressure cylinder being mounted adjacent to the proximal end of said second suspension arm; and

means for adjusting the length between said first and second ends of said pressure cylinder, said adjusting means comprising;

a block, said block including a guide channel extending therethrough and said guide channel positioned at an angle relative to the length of said pressure cylinder, and further including a recessed portion within said block;

a carrier member mounted for slidable movement within said guide channel;

a set screw contained within said recessed portion and threadably engaging said carrier member such that rotation of said set screw moves said carrier member relative to said block; and

means for coupling said carrier member to said pressure cylinder.

2. The suspension system of claim 1 wherein said guide channel is substantially straight and said recessed portion is elongated and substantially parallel to said guide channel such that said set screw, when positioned in said recessed portion, has a longitudinal axis oriented substantially parallel to said guide channel.

3. The suspension system of claim 1 wherein said block further includes a transverse bore, and said bore has a central axis about which one of said suspension arms is mounted for pivotable movement.

4. The suspension system of claim 3 wherein said block has first and second ends and said transverse bore is adjacent said first end of said block and said second end of said block bears against said pivot housing.

5. The suspension system of claim 1 wherein said block further includes an elongated set screw access groove positioned along and parallel to said guide channel and offset therefrom, said groove positioned to confront said carrier member.

6. The suspension system of claim 5 wherein said carrier member includes a threaded channel threadably engaging said set screw so as to move said carrier member in response to set screw rotation.

7. The suspension system of claim 1 wherein said carrier member includes a threaded channel threadably engaging said set screw so as to move said carrier member in response to set screw rotation.

8. A suspension system for positioning the supporting a display device of a personal computer above a work surface, said suspension system comprising:

a carriage to receive the display device therein;

a tilt and swivel mechanism attached to and extending above said carriage, said tilt and swivel mechanism allowing said carriage to be tilted and rotated relative to the work surface;

a parallelogram linkage system including first and second substantially parallel suspension arms, each said arm having a distal end and a proximal end and said linkage system carrying said tilt and swivel mechanism adjacent said distal ends of said arms;

a pivot housing, said pivot housing being pivotably mounted to and supporting said suspension arms at said proximal ends thereof;

a pressure cylinder for urging said carriage and the display device upwardly in a generally vertical direction away from the work surface and having first and second ends spaced apart by a length, said first end of said pressure cylinder being mounted adjacent to the distal end of said first suspension arm and said second end of said pressure cylinder being mounted adjacent to the proximal end of said second suspension arm;

a truck member pivotably mounting said pivot housing;

tracking means, said truck member being mounted for movement along said tracking means, said carriage being movable between a first position disposed over the work surface and a second position displaced from said first position as said truck member is moved relative to said tracking means;

a rectangular support frame member above the work surface and carrying said tracking means, said frame member having a length dimension substantially exceeding its width dimension, and having its length dimension substantially parallel to said tracking means; and

said linkage system and said truck member being moveable between operating and storage positions such that when in storage position said linkage assembly is generally parallel to said tracking means and said length dimension.

9. The suspension system of claim 8 wherein said support frame member has a front edge and a rear edge, said edges extending along said long dimension of said support frame, said tracking means being positioned closely adjacent said front edge and parallel thereto to permit increased outward extension of said carriage beyond said front edge and toward the operator when in operating position and allowing free movement and storage of said carriage, tilt and swivel mechanism, linkage system, pivot housing, truck member and tracking means wholly below said frame support member.

10. The suspension system of claim 8 wherein said support frame member overlies said track member and at least part of said first and second suspension arms to thereby limit upward movement of said arms and to constrain movement of said carriage below the level of said support frame when in operating and storage positions.

11. The suspension system of claim 8 wherein said pivot housing permits said parallelogram linkage to swing in a horizontal plane below and about said tracking means through an angle of at least 90°

from said tracking means.

12. The suspension system of claim 8 wherein said carriage includes a saddle frame having a first pair of generally horizontal frame members which are spaced apart a distance from one another and extend forwardly and rearwardly of the display device so as to support the display device, said frame further including a second pair of generally horizontal frame members spaced apart from one another and extending forwardly and rearwardly of said tilt and swivel mechanism to closely overly the display device and prevent it from tipping forwardly from the carriage during tilting, said first and second pairs of frame members being spaced vertically a distance apart and connected by a pair of vertical leg portions.

13. The suspension system of claim 12 wherein said support frame member comprises a shelving unit having rearwardly extending tabs so as to serve as a component in a modular partition system.

14. A suspension system for positioning and supporting a display device of a personal computer above a work surface, said suspension system comprising:

a carriage to receive the display device therein;

a tilt and swivel mechanism attached to and extending above said carriage, said tilt and swivel mechanism allowing said carriage to be tilted and rotated relative to the work surface;

a parallelogram linkage system including first and second substantially parallel suspension arms, each said arm having a distal end and a proximal end and said linkage system carrying said tilt and swivel mechanism adjacent said distal ends of said arms;

a pivot housing, said pivot housing being pivotably fastened to and supporting said suspension arms at said proximal ends thereof;

a pressure cylinder for urging the carriage and display device upwardly in a generally vertical direction away from the work surface and having first and second ends spaced apart by a length, said first end of said pressure cylinder being mounted adjacent to the distal end of said first suspension arm and said second end of said pressure cylinder being mounted adjacent to the proximal end of said second suspension arm;

a truck member pivotably mounting said pivot housing; and

tracking means, said truck member being mounted for movement along said tracking means, said carriage being movable between a first position disposed over the work surface and a second position displaced from said first position as said truck member is moved relative to said tracking means; and

said carriage further including a saddle frame having a first pair of generally horizontal frame members which are spaced apart a distance from one another and support the display device, said frame further including a second pair of generally horizontal frame members spaced apart from one another and extending forwardly and rearwardly of said tilt and swivel mechanism to closely overlie and contain the display device and restrain it from tipping forwardly from the carriage during tilting, said first and second pairs of frame members being spaced vertically a distance apart and connected by a pair of vertical leg portions.

15. A suspension system for positioning and supporting a display device of a personal computer above a work surface for the convenience of an operator, said suspension system comprising:

a carriage to receive the display device therein and having a front and back;

a tilt and swivel mechanism attached to and extending above said carriage, said tilt and swivel mechanism allowing said carriage to be tilted and rotated relative to the work surface;

a parallelogram linkage system including first and second substantially parallel suspension arms, each said arm having a distal end and a proximal end and said linkage system carrying said tilt and swivel mechanism adjacent said distal ends of said arms;

a pivot housing, said pivot housing being pivotably fastened to and supporting said suspension arms at said proximal ends thereof;

a pressure cylinder for urging the carriage and display device upwardly in a generally vertical direction away from the work surface and having first and second ends spaced apart by a length, said first end of said pressure cylinder being mounted adjacent to the distal end of said first suspension arm and said second end of said pressure cylinder being mounted adjacent to the proximal end of said second suspension arm;

a truck member pivotably mounting said pivot housing and allowing said linkage system to extend radially from said truck member;

tracking means supported above the work surface, said truck member being mounted for sliding movement along said tracking means, said carriage being movable between a first position disposed over the work surface and a second position displaced from said first position as said truck member is moved relative to said tracking means; and

said tilt and swivel mechanism being rotatable through substantially 360° and

said pivot housing being rotatable relative to said tracking means through at least 180°

while fully supporting the carriage over the work surface to thereby permit sliding, swinging and rotational movement of said carriage to substantially any position around and below said tracking means and within the radius defined by said linkage system while allowing the front of the carriage to confront the operator in all such positions.

16. The suspension system of claim 15 wherein the support frame member comprises a shelving unit having rearwardly extending tabs so as to serve as a component in a modular partition system.

17. The suspension system of claim 15 and further including:

means for adjusting the length between said first and second ends of said pressure cylinder, said adjusting means comprising;

a block, said block including a guide channel extending therethrough and said guide channel positioned at an angle relative to the length of said pressure cylinder, and further including a recessed portion within said block;

a carrier member mounted for slidable movement within

said guide channel;

a set screw contained within said recessed portion and

threadably engaging said carrier member such that rotation of said set screw moves said carrier member relative to said block; and

means for coupling said carrier member to said pressure cylinder.

18. The suspension system of claim 17 wherein said guide channel is substantially straight and said recessed portion is elongated and substantially parallel to said guide channel such that said set screw, when positioned in said recessed portion, has a longitudinal axis oriented substantially parallel to said guide channel.

19. The suspension system of claim 17 wherein said block further includes an elongated set screw access groove positioned along and parallel to said guide channel and offset therefrom, said groove positioned to confront said carrier member.

20. The suspension system of claim 19 wherein said carrier member includes a threaded channel threadably engaging said set screw so as to move said carrier member in response to set screw rotation.

21. The suspension system of claim 15 and further including:

a rectangular support frame member supportable above the work surface and carrying said tracking means, said frame member having a length dimension substantially exceeding its width dimension;

said tracking means being substantially parallel to said length dimension of said frame member; and

said linkage system and truck member being moveable between operating and storage positions such that when in storage position said linkage assembly is generally parallel to said tracking means and to said length dimension.

22. The suspension system of claim 15 for use adjacent to a work surface having a height, said suspension system further comprising:

a base member; and

one or more vertical frame members extending upwardly from said base member to a height greater than the height of the work surface, whereby the support frame member may be mounted to said vertical frame member at a height substantially exceeding that of the work surface so as to avoid obstructing the work surface.

23. A suspension system for positioning and supporting a display device of a personal computer above a work surface for the convenience of an operator, said suspension system comprising:

a carriage to receive the display device therein and having a front and back;

a tilt and swivel mechanism attached to and extending above said carriage, said tilt and swivel mechanism allowing said carriage to be tilted and rotated relative to the work surface;

a parallelogram linkage system including first and second substantially parallel suspension arms, each said arm having a distal end and a proximal end and said linkage system carrying said tilt and swivel mechanism adjacent said distal ends of said arms;

a pivot housing, said pivot housing being pivotably fastened to and supporting said suspension arms at said proximal ends thereof;

upward biasing means to urge the carriage and display device upwardly in a generally vertical direction away from the work surface;

a truck member pivotally mounting said pivot housing and allowing said linkage system to extend radially from said truck member;

tracking means supported above the work surface, said truck member being mounted for sliding movement along said tracking means, said carriage being movable between a first position disposed over the work surface and a second position displaced from said first position as said truck member is moved relative to said tracking means; and

said tilt and swivel mechanism being rotatable through substantially 360° and

said pivot housing being rotatable relative to said tracking means through at least 180°

while fully supporting the carriage over the work surface to thereby permit sliding, swinging and rotational movement of said carriage to substantially any position around and below said tracking means and within the radius defined by said linkage system while allowing the front of the carriage to confront the operator in all such positions.