Chairs and seats – With occupant-propelled walker or skater frame – Bottom movable to nonuse position
Patent
1993-04-29
1995-05-23
Dorner, Kenneth J.
Chairs and seats
With occupant-propelled walker or skater frame
Bottom movable to nonuse position
297331, 2971831, A61H 300
Patent
active
054174724
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to such a wheeled implement or vehicle, preferably a so-called walker, wheeled walking frame or rollator , as has a first frame section fitted with handles for the user, and a second frame section which is pivotally connected with the first for switching of the implement between a collapsed position and an opened-out position of use, a stay arrangement extending between the frame sections and, in a locked position in relation to one another, positionally fixing the frame sections in the position of use.
BACKGROUND ART
An implement or a rollator of the type mentioned by way of introduction is previously known in the art and has, on the front frame section facing away from the user, a rigidly secured stay directed towards the rear frame section. The rear frame section has pivotal linkages which, in the longitudinal direction, are displaceable in relation to the rigidly disposed stay and which are fixedly lockable therein by means of a screw connection. The design and construction are such that there is a risk that the rollator may collapse under load if the locking screw has not been tightened.
The prior art rollator is further provided with a seat board which, with its front edge portion, rests on the rigidly secured stay. The seat board is so designed as to prevent inward collapse of the rollator, for which reason the seat board must first be raised before the rollator can be collapsed once the locking screws have been released. Hence, the procedure for collapsing or folding the rollator is unnecessarily circumstantial.
PROBLEM STRUCTURE
The present invention has for its object to realize an apparatus of the type disclosed by way of introduction, the apparatus being designed in such a manner that the risk of accidents by unintentional collapsing of the implement does not exist. The invention further has for its object to realize an apparatus which permits intentional collapsing in a very simple manner, in particular without the use of specific locking wheels, knobs or the like. Furthermore, the present invention has for its object to realize an apparatus in which its seat board may readily be switched between a lowered seating position and a raised position without the remainder of the apparatus being affected.
Finally, the present invention has for its object to realize an apparatus which is simple and economical in manufacture and which provides a high degree of stability.
SOLUTION
The objects forming the basis of the present invention are attained if the apparatus disclosed by way of introduction is characterized in that a seating surface in a first region is, via its side edges, moveably connected to or supportable on the stay arrangement between the connection region thereof with each respective frame section; that the seat surface is, in a second region, supportable on or connected with, respectively, support means either on the stay arrangement in the proximity of either of the frame sections, or directly thereon; and that the load of the user on the seat surface strives to move the stay arrangement towards the locking position.
In one preferred embodiment, the seat surface is pivotally connected to the stay arrangement in its first region.
In the preferred embodiment, it further applies according to the invention that the stay arrangement has, at each side of the implement, stays which are pivotally secured to one another and in each respective frame section; and that the stays on opposing sides of the implement are interconnected to one another by the intermediary of the seat surface.
These design and construction features afford the major advantage that the seat surface can be used as operating device or handle for maneuvering both of the stay arrangements simultaneously to a position for collapsing the implement.
In addition, the seat surface is pivotal, in relation to the stays, about a pivot shaft which pivotably interconnects the stays with one another. Further, the free edge portion of the seat surface is preferably provided with a hand
REFERENCES:
patent: 897737 (1908-09-01), Goodrich
patent: 2798533 (1957-07-01), Frank
patent: 3199521 (1965-08-01), Ries
patent: 3537748 (1970-11-01), Knapp
patent: 4253678 (1981-03-01), Leclerc
patent: 4449732 (1984-05-01), Surot
patent: 4643211 (1987-02-01), Morris et al.
patent: 5020560 (1991-06-01), Turbeville
Dorner Kenneth J.
Etac AB
Jr. Milton Nelson
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