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| Number | Title | Issue Date |
| 6659485 | Footboard A footboard which can be used in case of necessity by drawing out a footboard main body as a tread from a lower portion or a vicinity of the lower portion of a portion for getting on and off and then by lowering the footboard main body to an intermediate ... | 12/09/2003 |
| 6526706 | Beach stairway A highly stable beach access stairway is described that includes steps constructed of first and second parallel stringers with a plurality of treads extending between the stringers; upper, intermediate and lower support posts upon which the stringers are ... | 03/04/2003 |
| 5967257 | Folding escape/rescue ladder An escape/rescue ladder that can be mounted in a non-useable condition on the side of a building and can be placed in a useable condition to allow persons to enter and exit from any of a plurality of vertically spaced openings in the building located alon... | 10/19/1999 |
| 5339919 | Boarding ladder assembly having a variable counterweight lifting force A boarding ladder assembly for mounting a boarding ladder on a support for movement between raised storage and lowered boarding positions. The assembly includes a guide structure that has first and second guide tracks mounted in spaced diverging angular o... | 08/23/1994 |
| 5199731 | Step assembly for vehicles A step assembly (438) includes two step supporting members (444) which have proximal ends pivotally attached to the underside of a mounting bracket (440). The step supporting members (444) support a plurality of rungs (445). A step plate (446) is attached... | 04/06/1993 |
| 5174411 | Ladder improvements A loft ladder which can be pivotally and slidably mounted to loft opening has counterbalancing means including a resiliently biased pivotal arm, connected to the loft ladder by a link member pivotally connected between the pivotal arm and the loft ladder ... | 12/29/1992 |
| 4245716 | Vehicle access ladder The instant disclosure is directed to an access ladder for the elevated operator's platform of a vehicle, the ladder being pivotable in two planes between operative and inoperative positions about two separate axes. Counterbalance means interconnecting th... | 01/20/1981 |
| 4243120 | Retractable boarding ladder A boarding stairway moves relative to fixed structure in front of it between a raised retracted position and a lowered operative position. Rollers at the top of the stairway are guided in a fixed track that is straight and vertical along most of its lengt... | 01/06/1981 |
| 4153138 | Ladder hinge and stabilizer therefor A fold-up ladder is provided for a combine which pivotally connects at its upper end to a deck adjacent an operator's cab at the forward end of the combine. The axis of the pivot connection at the upper end of the ladder substantially coincides with the e... | 05/08/1979 |
| 3982608 | Fire escape Fire escape apparatus having a flight of stairs formed of a smooth material having treads and risers and which is mounted beneath a balcony for swinging movement between a horizontal position and a downwardly inclined position, the treads and risers being... | 09/28/1976 |
