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Vertical pull apparatus

Imported: 24 Feb '17 | Published: 06 Jan '04

Samuel W. Putnam

USPTO - Utility Patents

Abstract

A vertical pull apparatus for converting a vertical pulling motion to a horizontal pulling motion, which vertical pull apparatus typically includes a support for positioning in a generally vertical position. A cable-engaging mechanism is provided on the support, which cable-engaging mechanism engages a cable and defines a generally vertical cable segment and a generally horizontal cable segment in the cable. A first cable-gripping element and a second cable-gripping element on the support alternately and repeatedly grip and release the vertical cable segment of the cable. At least one of the cable-gripping elements is adapted for gripping and pulling the vertical cable segment of the cable along a vertical axis, such that the horizontal cable segment is pulled along a horizontal axis.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be better understood by reference to the accompanying drawings, wherein:

FIG. 1 is a perspective view of an illustrative embodiment of the vertical pull apparatus of this invention, in a typical application of the invention;

FIG. 2 is a perspective view, partially in section, of the vertical pull apparatus, with an upper cable-gripping element and a lower cable-gripping element receiving a cable (partially in section);

FIG. 3 is a front view, partially in section, of the vertical pull apparatus, with the upper cable-gripping element in the cable-releasing configuration and the lower cable-gripping element in the cable-gripping configuration, preparatory to pulling the cable;

FIG. 4 is a longitudinal sectional view, taken along section lines

4

4 in FIG. 3, of the vertical pull apparatus, with the upper cable-gripping element in the cable-gripping configuration and the lower cable-gripping element in the cable-releasing configuration prior to repositioning of the lower cable-gripping element after pulling the cable;

FIG. 5 is a transverse sectional view, taken along section lines

5

5 in FIG. 3, of the vertical pull apparatus; and

FIG. 6 is an exploded, perspective view, partially in section, of the vertical pull apparatus.

Claims

1. A vertical pull apparatus for transmitting a generally vertical pulling motion into a generally horizontal pulling motion, said apparatus comprising:

2. The vertical pull apparatus of claim 1 wherein said support comprises a piling and a power pole adjustably mounted on said piling, and said first cable-gripping element and said second cable-gripping element are provided on said power pole.

3. The vertical pull apparatus of claim 1 wherein said cable-engaging mechanism comprises a sheave.

4. The vertical pull apparatus of claim 3 wherein said support comprises a piling and a power pole adjustably mounted on said piling, and said first cable-gripping element and said second cable-gripping element are provided on said power pole.

5. The vertical pull apparatus of claim 1 comprising a hydraulic cylinder provided on said support and operably engaging said first cable-gripping element for moving said first cable-gripping element between said first position and said second position.

6. The vertical pull apparatus of claim 5 wherein said support comprises a piling and a power pole adjustably mounted on said piling, and said first cable-gripping element and said second cable-gripping element are provided on said power pole.

7. The vertical pull apparatus of claim 5 wherein said cable-engaging mechanism comprises a sheave.

8. The vertical pull apparatus of claim 7 wherein said support comprises a piling and a power pole adjustably mounted on said piling, and said first cable-gripping element and said second cable-gripping element are provided on said power pole.

9. A vertical pull apparatus for transmitting a generally vertical pulling motion into a generally horizontal pulling motion, said apparatus comprising:

10. The vertical pull apparatus of claim 9 wherein said support comprises a piling and a power pole adjustably mounted on said piling, and said hydraulic cylinder, said first cable-gripping element and said second cable-gripping element are provided on said power pole.

11. The vertical pull apparatus of claim 9 wherein said cable-engaging mechanism comprises a sheave.

12. The vertical pull apparatus of claim 11 wherein said support comprises a piling and a power pole adjustably mounted on said piling, and said hydraulic cylinder, said first cable-gripping element and said second cable-gripping element are provided on said power pole.

13. A vertical pull apparatus for transmitting a generally vertical pulling motion into a generally horizontal pulling motion and bursting a subterranean horizontal pipe, said apparatus comprising:

14. The vertical pull apparatus of claim 13 wherein said support comprises a piling and a power pole adjustably mounted on said piling, and said first cable-gripping element and said second cable-gripping element are provided on said power pole.

15. The vertical pull apparatus of claim 13 wherein said cable-engaging mechanism comprises a sheave.

16. The vertical pull apparatus of claim 15 wherein said support comprises a piling and a power pole adjustably mounted on said piling, and said first cable-gripping element and said second cable-gripping element are provided on said power pole.

17. The vertical pull apparatus of claim 13 comprising a hydraulic cylinder provided on said support and operably connected to said first cable-engaging element for moving said first cable-engaging element between said first position and said second position.

18. The vertical pull apparatus of claim 17 wherein said support comprises a piling and a power pole adjustably mounted on said piling, and said hydraulic cylinder, said first cable-gripping element and said second cable-gripping element are provided on said power pole.

19. The vertical pull apparatus of claim 17 wherein said cable-engaging mechanism comprises a sheave.

20. The vertical pull apparatus of claim 19 wherein said support comprises a piling and a power pole adjustably mounted on said piling, and said hydraulic cylinder, said first cable-gripping element and said second cable-gripping element are provided on said power pole.