Ball deck

• US 6,065,665 A
• Filed: 06/19/1998
• Issued: 05/23/2000
• Est. Priority Date: 06/25/1996
• Status: Expired due to Fees

• Current Assignee: FMC Technologies Incorporated (TechnipFMC, plc)
• Original Assignee: FMC Corporation
• Inventors: McKinnon, Laura Lynn, Yuan, Chunguang, Leon, Michael A.
• Primary Examiner(s): Heinrich, Samuel M.
• Application Number:
  US09/100,855
• Time in Patent Office: 704 Days
• Field of Search: 228/135, 228/171, 228/174, 228/182, 228/212
• US Class Current: 228/135
• CPC Class Codes: B65G 13/071 with frictional engagement
• CPC Class Codes: B65G 13/10 Switching arrangements
• CPC Class Codes: B65G 39/025 having spherical roller elements

Abstract

The present invention provides a ball deck which reduces or eliminates the use of castings, which is self-fixturing for welding and can be manufactured and assembled relatively inexpensively and simply, which has drive means that is readily alignable with the drive motors, which incorporates a deck plate easily registerable with the associated driven balls regardless of the adjustment required to align the drive means, and which incorporates a means for attaching the deck plate so that the upper surface thereof is flat and uncluttered and is less susceptible to wear.

Claims

1. A method of making a ball deck comprising the steps of:

cutting the component parts of said deck, including a bottom plate, side plates, support plate and transverse plates with a shape such that intersecting parts include a projecting tab on one such part and a complementary slot in the other part;

assembling the parts with the tabs in intersecting parts positioned in the slots of corresponding intersecting parts;

holding the assembled parts in their assembled position; and

welding each tab to the corresponding slot in the intersecting part, such that side plates are welded vertical to the bottom plate, transverse plates are welded to side plates, such that the support plate, transverse plates and side plates are welded together to form a cavity to receive a ballmat.

2. A method according to claim 1, and further comprising the step of positioning a ballmat within the formed cavity, the ballmat including a freely rotatable support ball capable of supporting a driven ball.

3. A method according to claim 2, and further comprising the step of biasing the ballmat outward from the cavity.

4. A method according to claim 3, and further comprising the step of biasing the ballmat through a spring that is interposed between the support plate and the ballmat.

5. A method according to claim 2, and further comprising the step of retaining the ballmat within the formed cavity by engaging the ballmat and side plates with a retainer.

6. A method according to claim 2, and further comprising the step of positioning a support block between side plates and resting on the bottom plate.

7. A method according to claim 2, wherein a driven ball is normally in contact with a support ball and spaced from the support block.

8. A method according to claim 7, and further comprising the step of transferring the load imposed on a driven ball directly to the bottom plate when the load exceeds a predetermined force.

9. A method of making a ball deck comprising the steps of:

cutting the component parts of said deck, including a bottom plate, side plates, support plate, and transverse plates, with a shape such that the intersecting parts include a projecting tab on one such part and a complementary slot in the other part;

assembling the parts with the tabs in intersecting parts positioned in the slots of corresponding intersecting parts;

holding the assembled parts in their assembled position;

welding each tab to the corresponding slot in the intersecting part, such that the side plates are welded vertical to a bottom plate, and transverse plates are welded to side plates to form a cavity;

positioning a ballmat within the formed cavity, the ballmat including a freely rotatable support ball capable of supporting a driven ball;

biasing the ballmat outward from the cavity with a spring that is interposed between the ballmat and the support plate while retaining the ballmat with a retainer that depresses the spring.

10. A method according to claim 9, and further comprising the step of positioning a support block between side plates and resting on the bottom plate.

11. A method according to claim 10, wherein a driven ball is normally in contact with a support ball and spaced from the support block.

12. A method according to claim 11, and further comprising the step of transferring the load imposed on a driven ball directly to the bottom plates when the load exceeds a predetermined force.