Dual track ladder

Details Dual track ladder Dual track ladder

1994-08-29

1995-05-09

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Traversing, track-mounted

Ground- or floor-engaging

182 36, E06C 1397

Patent

active

054131910

ABSTRACT:
A ladder system is disposed between two spaced storage shelves. The ladder may move longitudinally along the shelves, and may also be moved laterally between the shelves. Further, the ladder may pivot about a lateral axis such that the ladder may be picked up over obstructions in an aisle between the shelves. In this way, one can quickly and easily position the ladder at any position along or between the two storage shelves for accessing items stored on the shelves. This ladder system is particularly useful in the crowded warehouse-type retail outlets which are now gaining popularity.

REFERENCES:
patent: 356375 (1887-01-01), Perkins
patent: 470374 (1892-03-01), Fisher
patent: 528824 (1894-11-01), Sumner
patent: 775488 (1904-11-01), Tefzlaff
patent: 907401 (1908-12-01), Prouty
patent: 1320740 (1919-11-01), Coghlin
patent: 1341996 (1920-06-01), Plucienski
patent: 2273124 (1942-02-01), McDaniels
patent: 5148889 (1992-09-01), Fenwick et al.
Lista, Sets the Standard for Systematic Storage, "Storage Wall System," Catalog SW-255 Cotterman, Rolling Wood Ladders, Bulletin WL-188.

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