Utility distribution system for furniture

• US 5,403,232 A
• Filed: 05/10/1993
• Issued: 04/04/1995
• Est. Priority Date: 01/10/1991
• Status: Expired due to Fees

• Current Assignee: Steelcase Development Inc.
• Original Assignee: Steelcase Incorporated
• Inventors: Ahart, James R., Helm, Randall S.
• Primary Examiner(s): Joyce, Harold
• Application Number:
  US08/060,823
• Time in Patent Office: 694 Days
• Field of Search: 454/230, 454/231, 454/232, 454/233, 454/306, 454/903
• US Class Current: 454/230
• CPC Class Codes: E04B 2/7425 Details of connection of panels E04B2/7427 takes precedence
• CPC Class Codes: E04B 2/7433 with panels and support posts
• CPC Class Codes: E04B 2002/7483 Details of furniture, e.g. tables or shelves, associated with the partitions
• CPC Class Codes: E04B 2002/7488 Details of wiring
• CPC Class Codes: Y10S 454/903 Flexible ducts used for carrying air

Abstract

A ventilation system is provided for communicating ventilation air through a modular furniture arrangement, such as open office partition panel systems or the like. The ventilation system includes an air source, and a collapsible duct connected to the air source. The collapsible duct can be routed through interior spaces in partition panels in a collapsed state to facilitate routing and installation. After installation, the collapsible duct can be inflated for use, at which time the collapsible duct inflates to a maximum size to minimize resistance to air flow. Multiple secondary openings distribute the ventilation air in the collapsible duct to various worksurfaces as desired. A pressure relief valve is attached to the collapsible duct to prevent over-pressurization of the collapsible duct.

Claims

1. A collapsible duct for open office partition panel systems, of the type having channel-shaped supports, said duct comprising:

an elongate duct body having a closed interior defined by a sidewall constructed from a thin, substantially imperforate, flexible film material, and configured to conduct ventilation air therealong;

said duct body having a first opening shaped to communicate with a source of pressurized ventilation air, and a laterally facing second opening in said sidewall shaped to communicate with at least one diffuser to disperse ventilation air into an associated workspace;

said duct body having a nonrigid and nonreinforced construction which permits said duct body to be laterally collapsed and locally deformed to facilitate threading said duct body through associated partition panels; and

a bracket for engaging the material defining said second opening to retain the shape of said second opening and for engaging one of the channel-shaped supports to retain the duct body in the one support, whereby during operation, pressurized ventilation air from the source inflates said duct body and automatically expands the same laterally to a configuration which maximizes ventilation air flow therethrough, while minimizing resistance to the flow.

2. A collapsible duct as defined in claim 1 including means for communicating ventilation air from said second opening to a diffuser positioned remotely from said second opening.

3. A collapsible duct as defined in claim 2 wherein said means for communicating includes a flexible tube adapted to communicate ventilation air from said elongate duct body to a diffuser, said flexible tube including one end operably connected to said second opening by a connecting means and including another end positioned in a desired location in the associated workspace.

4. A collapsible duct as defined in claim 1 wherein said bracket includes an inner member and an outer member that clamp together in a sandwich-like arrangement on the material forming said second opening.

5. A collapsible duct as defined in claim 1 wherein said bracket is configured to engage a hole in the channel-shaped support to hold said elongate duct body in a desired position in the channel-shaped support.

6. A collapsible duct as defined in claim 1 wherein said elongate duct body includes a plurality of air dispensing openings including said second opening.

7. A collapsible duct as defined in claim 6 including a plurality of flexible dispensing tubes operably connected to said plurality of second openings.

8. A collapsible duct assembly as defined in claim 6 including a pressure relief system connected to one of said plurality of air dispensing openings on said elongate duct body for venting the ventilation air in said elongate duct body when the air pressure in the elongate duct body reaches a predetermined maximum amount.

9. A duct assembly for open office partition panel systems and the like, comprising:

an elongate duct having a closed interior defined by a sidewall constructed from a thin, substantially imperforate, flexible film material, and configured to conduct ventilation air therealong;

said duct having a first opening shaped to communicate with a source of pressurized ventilation air, and at least one second opening shaped to communicate with at least one diffuser to disperse ventilation air into an associated workspace;

said duct having a nonrigid and nonreinforced construction which permits said duct to be laterally collapsed and locally deformed to facilitate threading said duct through associated partition panels;

a flexible tube for communicating ventilation air from said second opening to a diffuser positioned remotely from said second opening, said flexible tube including one end operably connected to said second opening by a connecting means and including another end positioned in a desired location in the associated workspace;

said connecting means including an inner member and an outer member that clamp together in a sandwich-like arrangement on the material forming said second opening, said outer member including means for securing said outer member in a channel-shaped support, whereby during operation, pressurized ventilation air from the source inflates said duct and automatically expands the same laterally to a configuration which maximizes ventilation air flow therethrough, while minimizing resistance to the flow.

10. A duct assembly as defined in claim 9 wherein said elongate duct includes a plurality of said second openings, and including a plurality of said flexible tubes operably connected to said plurality of second openings.

11. A duct assembly as defined in claim 10 including a pressure relief system connected to said elongate duct for venting the ventilation air in said elongate duct when the air pressure in the elongate duct reaches a predetermined maximum amount.

12. A partition system for open office spaces, comprising:

a plurality of freestanding portable partition panels detachably interconnected to form at least one workstation;

said partition panels each including a rigid panel frame with opposite sides and a hollow interior portion to facilitate routing electrical and non-electrical utility lines therethrough for use in said at least one workstation, and at least one cover panel shaped to cover at least a portion of one of the opposite sides of said panel frame, and being detachably connected therewith to provide ready access to the interior portion of the associated one of said partition panels, said partition panels each further including at least one laterally extending channel attached to said rigid panel frame in said hollow interior portion; and

a collapsible duct having a closed interior defined by a sidewall constructed from a thin, substantially imperforate, flexible film, and configured to rest in said at least one channel and to conduct ventilation air therealong;

said duct having a first opening shaped to communicate with a source of pressurized ventilation air, and a second opening intermediate the length of the collapsible duct shaped to communicate with at least one diffuser to disperse ventilation air into said workstation;

said duct having a nonrigid and nonreinforced construction which permits said duct to be laterally collapsed and locally deformed to facilitate threading said duct through the interior portions of said partition panels, whereby during operation, pressurized ventilation air from the source inflates said duct and automatically expands the same laterally to a configuration which maximizes ventilation air flow therethrough, while minimizing resistance to the flow.

13. A partition system as defined in claim 12 including means for moving air operably connected to said first opening.

14. A partition system as defined in claim 13 including a cabinet for housing said means for moving air.

15. A partition system as defined in claim 14 wherein said cabinet is positioned exteriorly of said at least one workstation.

16. A partition system as defined in claim 15 wherein said cabinet includes an upwardly facing air inlet for accepting ventilation air from an overhead ventilation system.

17. A partition system as defined in claim 12 including means for communicating ventilation air from said second opening to a diffuser positioned remotely from said second opening.

18. A partition system as defined in claim 17 wherein said means for communicating includes a flexible tube adapted to communicate ventilation air from said elongate duct to a diffuser, said flexible tube including one end with means for operably connecting to said second opening and including another end positioned in a desired location in the associated workspace.

19. A partition system as defined in claim 18 wherein said connecting means includes an inner member and an outer member that clamp together in a sandwich-like arrangement on the material forming said second opening.

20. A partition system as defined in claim 12 including means for supporting said collapsible duct, said means for supporting being located in the interior portions of said partition panels.

21. A partition system as defined in claim 12 wherein said elongate duct includes a plurality of air dispensing openings including said second opening.

22. A partition system as defined in claim 21 including a plurality of dispensing tubes operably connected to said plurality of second openings.

23. A partition system as defined in claim 12 including a pressure relief system connected to said elongate duct for venting the ventilation air in said elongate duct when the air pressure in the elongate duct reaches a predetermined maximum amount.

24. A workstation ventilation system, comprising:

a source of pressurized ventilation air;

a plurality of modular furniture units arranged in a plan configuration defining workstations, said plurality of modular furniture units including means defining a laterally extending space that extends from one side to another side of each workstation and which join to form a continuous elongated space and further including at least one laterally extending channel attached to said means and located in said laterally extending space;

an air diffuser located at at least one workstation; and

an elongate collapsible duct having a closed interior defined by an imperforate flexible sidewall material, said duct being configured to mateably rest in said at least one channel and to extend along said continuous elongated space to conduct ventilation air from said source to said at least one workstation;

said duct having a first opening shaped to communicate with the source of pressurized ventilation air and engaged therewith, and a laterally facing second opening shaped to communicate with said diffuser to disperse ventilation air into said at least one workstation;

said duct being laterally collapsible and locally deformable to facilitate threading said duct through the laterally extending spaces in said plurality of modular furniture units and including rigidifying members for engaging the marginal material defining said second opening whereby during operation, pressurized ventilation air from the source inflates said duct and automatically expands the same laterally to a configuration which maximizes ventilation air flow therethrough, while minimizing resistance to the flow.

25. A workstation ventilation system as defined in claim 24 including a cabinet for housing said source of pressurized ventilation air.

26. A workstation ventilation system as defined in claim 24 including means for communicating ventilation air from said second opening to a diffuser positioned remotely from said second opening.

27. A workstation ventilation system as defined in claim 25 wherein said means for communicating includes a flexible tube adapted to communicate ventilation air from said elongate duct to a diffuser, said flexible tube including one end with means for operably connecting to said second opening and including another end positioned in a desired location in the associated workspace.

28. A workstation ventilation system as defined in claim 24 wherein said elongate duct includes a plurality of air dispensing openings including said second opening.

29. A workstation ventilation system as defined in claim 28 including a plurality of dispensing tubes operably connected to said plurality of air dispensing openings.

30. A workstation ventilation system as defined in claim 24 including a pressure relief system connected to said elongate duct for venting the ventilation air in said elongate duct when the air pressure in the elongate duct reaches a predetermined maximum amount.

31. A method comprising:

providing a plurality of freestanding partition panels each having an interior space extending from one side to another side and including a channel-shaped support attached to the partition panel and located in the interior space for carrying electrical and non-electrical utility lines for workstations, the interior spaces joining to form a continuous elongate space;

providing a collapsible duct having a closed interior defined by a sidewall constructed by a thin, substantially imperforate, flexible film and configured to conduct ventilation air therethrough;

extending the collapsible duct in a collapsed state through the continuous elongate space and resting the collapsible duct on the channel-shaped supports; and

inflating the collapsible duct so as to expand the collapsible duct to the maximum allowable shape to communicate ventilation air therethrough.