Fire escape – ladder – or scaffold – Convertible
Patent
1982-07-08
1984-06-26
Machado, R. P.
Fire escape, ladder, or scaffold
Convertible
182129, 280 30, 280 4718, B62B 120
Patent
active
044560940
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a combi-equipment functioning as transport cart and ladder, particularly boat-ladder, said equipment comprising a main frame supported by wheels, and a load-carrying member, said main frame comprising two elongate, substantially parallel side frame pieces and upper and lower end frame pieces joining the side frame pieces, as well as a number of transverse stays between the side frame parts.
Equipment of the type mentioned above is known per se through U.S. patent Ser. No. 2,843,393, British Pat. No. 636,141 and German Offenlegungsschrift No. 2 205 501, for instance. All these utensils can be used for various limited purposes.
SUMMARY OF THE INVENTION
The object of the present invention is to provide equipment of the type mentioned which can be used for considerably more purposes than previously known equipment, by means of a quick and simple conversion.
Another object of the present invention is to provide equipment which is simple in design, weighs little, but is still sufficiently stable to fulfil its various tasks.
Yet another object of the present invention is to provide equipment to which accessories can easily be applied, thus further increasing the usefulness of the equipment.
The objects listed above are achieved according to the present invention by giving the equipment the characteristics defined in the claims.
Since the load-carrying member, comprising a load-carrying frame pivotably journalled on a transverse stay or on the side frame parts, and support frame which is pivotably journalled in conjunction with the load-carrying frame, this enables the support frame, with the help of locking members, to be brought into engagement either with the lower end frame part of the main frame to give a first position of the load-carrying member, or with a second transverse stay of the main frame part, said stay being located above said first transverse stay, to give a second position of the load-carrying member.
The load-carrying frame may also be designed to comprise an outer part, jointed in relation to an inner part of the load-carrying member, arranged to be locked in relation to the frame part to provide an extended load plane or extended support member.
The outer part of the frame part may also be provided with locking means which, after the locking engagement of the outer part with the load-carrying frame has been released, can be brought into engagement with the lower end frame part of the main frame, so that yet another position for the load-carrying member is obtained.
The load-carrying frame may also be designed to abut against the lower end frame part of the main frame, whereupon the outer part of the load-carrying frame is arranged via a means preventing further turning, to assume a perpendicular position in relation to the load-carrying frame, the outer part of the load-carrying frame serving as a support on the ground.
The present invention is particularly useful as an accessory for leisure boats to fulfil the double function of facilitating climbing ashore or aboard over the bow, for instance, and serving as a transport cart for goods to be transported to and from the boat.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described with reference to various preferred embodiments shown in the accompanying sheet of drawings, in which
FIGS. 1 and 1a show the equipment in a position enabling it to be used as a bow ladder,
FIGS. 2 and 2a show the equipment in a position enabling it to be used as a stern ladder with a folding lower part folded down and up, respectively.
FIGS. 3 and 3a show the equipment in a position for use as a transport cart with maximum load plane,
FIGS. 4 and 4a show alternative embodiments of the equipment with pivotably jointed load-carrying frames where only the inner section of the load-carrying frame is used for carrying loads,
FIG. 5 shows an alternative embodiment of the equipment in a position enabling it to be used as a small, raised load plane, and
FIG. 6 shows a side view of the equipme
REFERENCES:
patent: 2843393 (1958-07-01), Dahlander, Sr.
patent: 2957700 (1960-10-01), Beaurline
patent: 3104889 (1963-09-01), Branch
patent: 3797847 (1974-03-01), Lindsey
patent: 4040642 (1977-08-01), David
patent: 4248453 (1981-02-01), Stark
patent: 4355818 (1982-10-01), Watts
Chin-Shue Alvin
Machado R. P.
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