Claims
- 1. In combination with (1) a ladder having a top end and comprised of a first plurality of rungs defining a first plane, said first plurality of rungs having a top rung having a first end and a second end at the top end of the ladder and (2) a walk-through section at or proximate the top end of the ladder comprising:
(a) a second plurality of parallel handgrip rungs defining a second plane and having top and bottom handgrip rungs; (b) a third plurality of parallel handgrip rungs defining a third plane and having top and bottom handgrip rungs; said second plane corresponding substantially to said third plane; and, said bottom handgrip rung of said second plurality of parallel handgrip rungs being situated proximate the first end of the top rung of said first plurality of rungs at the top end of the ladder; said second plurality of parallel handgrip rungs attached at ends thereof to one side of said walk through section and said bottom handgrip rung of said third plurality of parallel handgrip rungs being situated proximate the second end of the top rung of said first plurality of rungs at the top end of the ladder; said third plurality of parallel handgrip rungs attached at ends thereof to the other side of said walk-through section corresponding to said third planes.
- 2. The ladder and walk-through section combination of claim 1, wherein the walk-through section is adapted to be permanently attached to the ladder.
- 3. The ladder and walk-through section combination of claim 1, wherein the walk-through section is adapted to be movably attached to the ladder.
- 4. The ladder and walk-through section combination of claim 1, wherein the walk-through section is permanently attached to a structure to be climbed.
- 5. The ladder and walk-through section combination of claim 1, wherein the walk-through section is movably attached to a structure to be climbed.
- 6. The ladder and walk-through section combination of claim 1, wherein the walkthrough section is permanently attached to a railcar to be climbed.
- 7. The ladder and walk-through section combination of claim 1, wherein the walk-through section is movably attached to a railcar to be climbed.
- 8. The ladder and walk-through section combination of claim 1, wherein the walk-through section is permanently attached to a ship to be climbed.
- 9. The ladder and walk-through section combination of claim 1, wherein the walk-through section is movably attached to a ship to be climbed.
- 10. The ladder and walk-through section combination of claim 1, wherein the walk-through section is permanently attached to a tank truck to be climbed.
- 11. The ladder and walk-through section combination of claim 1, wherein the walk-through section is movably attached to a tank truck to be climbed.
- 12. The ladder and walk-through section combination of claim 1, wherein the walk-through section is permanently attached to a bunk bed to be climbed.
- 13. The ladder and walk-through section combination of claim 1, wherein the walk-through section is movably attached to a bunk bed to be climbed.
- 14. The ladder and walk-through section combination of claim 1, wherein the walk-through section is permanently attached to a hatch to be climbed.
- 15. The ladder and walk-through section combination of claim 1, wherein the walk-through section is movably attached to a hatch to be climbed.
- 16. The ladder and walk-through section combination of claim 1, wherein the walk-through section is movably attached to a manhole to be climbed.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This regular utility patent application is a continuation of application Ser. No. 09/629,177 filed Jul. 31, 2000 and allowed Jul. 31, 2001, in turn a continuation-in-part of application Ser. No. 09/258,205 filed Feb. 26, 1999, now U.S. Pat. No. 6,095,283, based on Provisional Patent Application Serial No. 60/102,897 filed on Oct. 2, 1998. The disclosure of U.S. Pat. No. 6,095,283 is incorporated herein by reference thereto.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60102897 |
Oct 1998 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09629177 |
Jul 2000 |
US |
Child |
09918647 |
Aug 2001 |
US |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
09258205 |
Feb 1999 |
US |
Child |
09629177 |
Jul 2000 |
US |