REPOSITIONABLE PIT SEAL

• US 20110061185A1
• Filed: 01/13/2010
• Published: 03/17/2011
• Est. Priority Date: 09/14/2009
• Status: Active Grant

• Current Assignee: Stabilock LLC
• Original Assignee: Midwest Industrial Door, Inc.
• Inventors: Kimener, R. Peter, Kimener, Thomas Terrance, Frank, Kenneth A.
• Granted Patent: US 8,056,174 B2
• Time in Patent Office: Days
• US Class Current: 14/71.1
• CPC Class Codes: B65G 69/2817 with fluid-operated means
• CPC Class Codes: B65G 69/2823 extensible by pivoting parts
• CPC Class Codes: B65G 69/2876 Safety or protection means, e.g. skirts
• CPC Class Codes: Y10S 277/921 Closure or weather strip seal

Abstract

A method of selectively closing off a loading dock opening defined by a loading dock pit recessed within a floor of a building and a doorway into the building, the method comprising: (a) repositioning a pit seal panel having a substantially incompressible height and width to a barrier position where the pit seal panel closes off a rectangular area substantially spanning an entire vertical dimension and an entire widthwise dimension of the loading dock pit; and (b) lowering an overhead door to concurrently contact the pit seal panel and the floor of the building to close off the loading dock opening.

Claims

1. A method of selectively closing off a loading dock opening defined by a loading dock pit recessed within a floor of a building and a doorway into the building, the method comprising:

repositioning a pit seal panel having a substantially incompressible height and width to a barrier position where the pit seal panel closes off a rectangular area substantially spanning an entire vertical dimension and an entire widthwise dimension of the loading dock pit; and

lowering an overhead door to concurrently contact the pit seal panel and the floor of the building to close off the loading dock opening.

2. The method of claim 1, further comprising:

repositioning a vertically stored dock leveler from a horizontal use position to a vertical storage position after raising the overhead door, the vertically stored dock leveler at least partially located within the loading dock pit, wherein repositioning the vertically stored clock leveler from the horizontal use position to the vertical storage position coincides with repositioning the pit seal panel to the barrier position.

3. The method of claim 2, wherein a mechanical linkage is concurrently mounted to the vertical stored dock leveler and the pit seal panel so that repositioning the vertically stored dock leveler to from the horizontal use position to the vertical storage position is operative to reposition the pit seal panel to the barrier position.

4. The method of claim 2, wherein:

the act of repositioning the pit seal panel includes controlling the repositioning of the pit seal panel with an electronic controller that receives information regarding the position of the vertically stored dock leveler.

5. The method of claim 1, wherein:

the pit seal panel is mounted to an interior wall partially defining the loading dock pit; and

the act of repositioning the pit seal panel to the barrier position includes pivoting the pit seal panel with respect to the interior wall of the loading dock pit.

6. The method of claim 1, wherein:

the pit seal panel is mounted to the overhead door; and

the act of repositioning the pit seal panel to the barrier position includes repositioning the pit seal panel with respect to the overhead door and lowering the pit seal panel into the loading dock pit.

7. The method of claim 6, wherein:

the pit seal panel is pivotally mounted to the overhead door; and

an actuator is concurrently mounted to the pit seal panel and the overhead door to reposition the pit seal panel to the barrier position.

8. The method of claim 1, wherein:

a top of the pit seal panel engages a bottom of the overhead door when the bottom of the overhead door contacts the top of the pit seal panel to lock the pit seal panel to the overhead door.

9. The method of claim 1, further comprising:

repositioning the pit seal panel from the barrier position to a storage position; and

raising an overhead door to discontinue contact with the floor of the building, where raising the overhead door and repositioning the pit seal panel to the storage position is operative to no longer close of T the loading dock opening.

10. The method of claim 1, wherein:

lowering the overhead door to concurrently contact the pit seal panel and the floor of the building is operative to lock the pit seal panel in the barrier position.

19. The method of claim 1, wherein:

a top of the pit seal panel locks into a bottom of the overhead door when the bottom of the overhead door contacts the top of the pit seal panel.

11. A method of repositioning a rigid wall to selectively blockade a forward area of a loading dock pit formed into the floor of a building and partially defined by opposing vertical side walls, a rear vertical wall, and a bottom horizontal surface, the loading dock pit including a rear area, opposite the forward aspect, at least partially occupied by a vertically stored dock leveler, the method comprising:

positioning a rigid wall to a blocking position within the forward aspect of the loading dock pit, the blocking position having the rigid wall horizontally spanning between the opposing vertical side walls and concurrently vertically spanning between the bottom horizontal surface and a horizontal plane of the floor of the building; and

positioning an overhead door to concurrently contact the rigid wall and the floor of the building to lock the rigid wall in the blocking position.

12. The method of claim 11, further comprising:

repositioning the rigid wall from the blocking position to a storage position so the rigid wall does not concurrently horizontally span between the opposing vertical side walls and vertically span between the bottom horizontal surface and the horizontal plane of the floor of the building;

repositioning the overhead door to no longer concurrently contact the rigid wall and the floor of the building; and

positioning the vertically stored dock leveler from a vertical storage position to a horizontal use position so that a decking of the vertically stored dock leveler is generally parallel to the floor of the building, where the vertical storage position is not reached prior to repositioning the rigid wall from the blocking position.

13. The method of claim 11, further comprising:

positioning the vertically stored dock leveler to a vertical storage position so that a decking of the vertically stored dock leveler is generally perpendicular to the floor of the building, wherein a mechanical linkage is concurrently mounted to the vertical stored dock leveler and the rigid wall so that positioning the vertically stored dock leveler to the vertical storage position is operative to position the rigid wall to the blocking position.

14. The method of claim 12, wherein:

the act of repositioning the rigid wall from the blocking position to the storage position includes controlling the repositioning of the rigid wall with an electronic controller that receives information regarding the position of the vertically stored dock leveler.

15. The method of claim 11, wherein:

the rigid wall is mounted to at least one of the opposing vertical side walls and the bottom horizontal surface partially defining the loading dock pit; and

the act of positioning the rigid wall to the blocking position includes pivoting the rigid wall with respect to at least one of the opposing vertical side walls and the bottom horizontal surface of the loading dock pit.

16. The method of claim 15, further comprising:

positioning the vertically stored dock leveler from a vertical storage position to a horizontal use position so that a decking of the vertically stored dock leveler is generally parallel to the floor of the building;

the act of pivoting the rigid wall with respect to at least one of the opposing vertical side walls of the loading dock pit includes pivoting the rigid wall to be beneath the vertically stored dock leveler when the vertically stored dock leveler is in the horizontal use position.

17. The method of claim 11, further comprising:

repositioning the rigid wall from the blocking position to a storage position by lifting the rigid wall out of the loading dock pit, wherein the rigid wall is removably mounted to at least one of the opposing vertical side walls and the bottom horizontal surface partially defining the loading dock pit.

18. The method of claim 11, wherein:

the rigid wall is mounted to the overhead door; and

the act of positioning the rigid wall to the blocking position includes positioning the rigid wall with respect to the overhead door and lowering the rigid wall into the forward aspect of the loading dock pit.

20. The method of claim 11, further comprising:

repositioning the vertically stored dock leveler from a vertical storage position to a horizontal use position;

repositioning the rigid wall from a blocking position to a storage position beneath the horizontal use position of the vertically stored dock leveler;

wherein the rigid wall is biased to the blocking position; and

wherein the act of repositioning the vertically stored dock leveler from a vertical storage position to a horizontal use position includes the vertically stored dock leveler contacting a roller mounted to rigid wall to overcome the bias of the rigid wall and reposition the rigid wall to the storage position.