Bearing stand

• US 6,179,116 B1
• Filed: 07/09/1999
• Issued: 01/30/2001
• Est. Priority Date: 01/25/1999
• Status: Expired due to Term

• Current Assignee: Wolfcraft GmbH
• Original Assignee: Wolfcraft GmbH
• Inventors: Daniels, David, Ebert, Winfried, Noniewicz, Zbiegniew, Schueller, Hans-Juergen, Apolinski, Edmund
• Primary Examiner(s): Bidwell, James R.
• Application Number:
  US09/350,586
• Time in Patent Office: 571 Days
• Field of Search: 198/632, 198/860.1, 198/861.1, 198/313, 198/581, 193/35.TE, 108/116, 108/147.19, 108/147.2, 248/166, 248/439
• US Class Current: 198/632
• CPC Class Codes: B25H 1/00 Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
• CPC Class Codes: B25H 1/04 portable
• CPC Class Codes: B65G 13/12 adjustable

Abstract

A combination adjustable height bearing stand and roller platform assembly is provided which can be fixed at a pre-adjusted height. The combination bearing stand and roller assembly includes two pairs of legs with each pair of legs being pivotally connected together at a joint connection so that the legs can be brought from a parallel position used for storage to an angled position. The corresponding legs of the two pairs of legs are connected by cross-connectors. The legs are tubular and one leg of each pair of legs receives a height-adjustable support which can be secured at a pre-selected height by a fixing element. The top ends of the height-adjustable support are connected to fastening elements which, in turn, are pivotally connected to two carriers which support a platform assembly. Both the platform and bearing stand legs are pivotable between a collapsed and parallel storage position to an angled and horizontal position respectively using a single motion.

Claims

1. A combination adjustable height bearing stand and platform assembly, the combination bearing stand and platform assembly comprising:

two pairs of legs, the pair of legs being pivotally linked together at a joint connection for pivotal movement with respect to one another between a parallel position into an angled position,

one of the legs hollow and telescopically receiving a height-adjustable support, each height-adjustable support being secured in place by a fixing element disposed above the joint connection,

each height-adjustable support comprising a distal end connected to a fastening element, each fastening element being connected to a bearing projection connected to a carrier, each carrier being connected to and supporting a platform assembly, each bearing projection also being connected to a screw handle,

each fastening element comprising a triangular plate having three corners including a first corner connected to a distal end of its respective height-adjustable support, a second corner pivotally connected to its respective bearing projection and a third corner comprising a slot for receiving the screw handle connected to its respective bearing projection.

2. The combination bearing stand and platform assembly of claim 1 wherein each carrier comprises an elongated angle plate.

3. The combination bearing stand and platform assembly of claim 1 wherein each carrier comprises a mid-section and each bearing projection is connected to the mid-section of its respective carrier.

4. The combination bearing stand and platform assembly of claim 1 wherein each bearing projection is trapezoidally shaped and extends downward from the carrier.

5. The combination bearing stand and platform assembly of claim 2 wherein each angle plate comprises a vertical wall and each bearing projection is trapezoidally shaped and extends downward from the vertical wall of its respective carrier.

6. The combination bearing stand and platform assembly of claim 1 wherein each triangular plate is an obtuse triangle with the second corner of each triangular plate being obtuse angled.

7. The combination bearing stand and platform assembly of claim 1 wherein each screw handle comprises a stem with an enlarged neck portion and a threaded portion and each bearing projection comprises a threaded aperture for receiving the threaded portion of the stem of its respective screw handle and the slot disposed in the third corner of each triangular plate accommodates the enlarged neck portion of the stem of its respective screw handle.

8. The combination bearing stand and platform assembly of claim 1 wherein the bearing projection further comprises a stop limit for engaging the third corner of its respective triangular plate.

9. The combination bearing stand and platform assembly of claim 8 wherein each stop limit comprises a screw.

10. The combination bearing stand and platform assembly of claim 9 wherein each screw comprises a head for engaging the third corner of its respective triangular plate and a self-cutting thread portion.

11. The combination bearing stand and platform assembly of claim 1 wherein each fixing element comprises a bolt and each adjustable support comprises at least one through hole for receiving the bolt and the each leg that telescopically receives one of the adjustable supports comprises an edge for engaging the bolt passing through its respective adjustable support.

12. The combination bearing stand and platform assembly of claim 1 wherein each adjustable support comprises a lower end telescopically inserted into one of the legs, the lower end of each support comprising an outwardly projecting section, each of the legs that telescopically receives one of the adjustable supports comprises an upper end that comprises a stop shoulder for engaging the outwardly projecting section of its respective adjustable support to prevent a complete withdrawal of the adjustable supports from upper ends of their respective legs.

13. The combination bearing stand and platform assembly of claim 12 wherein each outwardly projection section comprises a bellied-out portion of its respective adjustable support.

14. The combination bearing stand and platform assembly of claim 13 wherein each stop shoulder comprises an inwardly extending tongue.

15. The combination bearing stand and platform assembly of claim 1 wherein the platform assembly comprises a table top for supporting a saw.

16. The combination bearing stand and platform assembly of claim 15 wherein the table top comprises a removable center portion.

17. The combination bearing stand and platform assembly of claim 16 wherein the platform assembly further comprises an open space disposed below the removable center portion for scrap removal.

18. The combination bearing stand and platform assembly of claim 15 wherein the platform assembly further comprises a tie bar that extends underneath the removable portion and that connects the two carriers together.

19. The combination bearing stand and platform assembly of claim 15 wherein the table top comprises wood.

20. The combination bearing stand and platform assembly of claim 1 wherein each pair of legs comprising a shorter leg and a longer leg, each shorter leg being hollow and telescopically receiving one of the height-adjustable supports.

21. A combination adjustable height bearing stand and platform assembly, the combination bearing stand and platform assembly comprising:

two pairs of legs, the pair of legs being pivotally linked together at a joint connection for pivotal movement with respect to one another between a parallel position into an angled position,

one of the legs hollow and telescopically receiving a height-adjustable support, each height-adjustable support being secured in place by a fixing element disposed above the joint connection,

each fixing element comprises a bolt and each adjustable support comprises at least one through hole for receiving the bolt and the each leg that telescopically receives one of the adjustable supports comprises an edge for engaging the bolt passing through its respective adjustable support,

each height-adjustable support comprising a distal end connected to a fastening element, each fastening element being connected to a bearing projection connected to a carrier, each carrier comprises an elongated angle plate having a mid-section and each bearing projection is connected to the mid-section of its respective carrier, each carrier being connected to and supporting a platform assembly, each bearing projection also being connected to a screw handle,

each fastening element comprising a triangular plate having three corners including a first corner connected to a distal end of its respective height-adjustable support, a second corner pivotally connected to its respective bearing projection and a third corner comprising a slot for receiving the screw handle connected to its respective bearing projection, each adjustable support comprises a lower end telescopically inserted into one of the legs, the lower end of each support comprising an outwardly projecting section, each of the legs that telescopically receives one of the adjustable supports comprises an upper end that comprises a stop shoulder for engaging the outwardly projecting section of its respective adjustable support to prevent a complete withdrawal of the adjustable supports from upper ends of their respective legs.

22. A combination adjustable height bearing stand and platform assembly, the combination bearing stand and platform assembly comprising:

two pairs of legs, the pair of legs being pivotally linked together at a joint connection for pivotal movement with respect to one another between a parallel position into an angled position,

one of the legs hollow and telescopically receiving a height-adjustable support, each height-adjustable support being secured in place by a fixing element disposed above the joint connection,

each fixing element comprises a bolt and each adjustable support comprises at least one through hole for receiving the bolt and the each leg that telescopically receives one of the adjustable supports comprises an edge for engaging the bolt passing through its respective adjustable support,

each height-adjustable support comprising a distal end connected to a fastening element, each fastening element being connected to a bearing projection connected to a carrier, each carrier comprises an elongated angle plate having a mid-section and each bearing projection is connected to the mid-section of its respective carrier, each carrier being connected to and supporting a platform assembly, each bearing projection also being connected to a screw handle,

each fastening element comprising a triangular plate having three corners including a first corner connected to a distal end of its respective height-adjustable support, a second corner pivotally connected to its respective bearing projection and a third corner comprising a slot for receiving the screw handle connected to its respective bearing projection,

the bearing projection further comprises a stop limit for engaging the third corner of its respective triangular plate,

each adjustable support comprises a lower end telescopically inserted into one of the legs, the lower end of each support comprising an outwardly projecting section, each of the legs that telescopically receives one of the adjustable supports comprises an upper end that comprises a stop shoulder for engaging the outwardly projecting section of its respective adjustable support to prevent a complete withdrawal of the adjustable supports from upper ends of their respective legs,

each screw handle comprises a stem with an enlarged neck portion and a threaded portion and each bearing projection comprises a threaded aperture for receiving the threaded portion of the stem of its respective screw handle and the slot disposed in the third corner of each triangular plate accommodates the enlarged neck portion of the stem of its respective screw handle.