Wheel chair abstract
A device for holding a wheel chair in a vehicle, such as a school
bus, comprising a pair of movable arms for engaging the wheel chair's
large wheels. The arms are adjustable to accommodate the distance
between the wheels.
Wheel chair claims
Having described my invention, I claim:
1. A combination comprising:
an elongated support having a plurality of regularly spaced openings
along the support;
a wheel chair having a pair of laterally spaced rotatable wheels
disposed adjacent the support, each wheel having a rim defining
an opening and being rotatable about an axis of rotation;
first wheel-engaging means mounted on the support and being engaged
with a first of said pair of wheels to prevent motion of said first
wheel with respect to the support;
second wheel-engaging means mounted on the support and being movable
toward the second of said pair of wheels along a path of motion
parallel to the axis of rotation of the second wheel;
an arm carried by the second wheel-engaging means to be received
between the opening defined by the rim of the second wheel to prevent
motion thereof with respect to the support; and
pin means carried by the second wheel-engaging means, said pin
means being receivable in a selected opening in the support whereby
the first and the second wheel-engaging cooperate to prevent motion
of the wheel chair with respect to the support.
2. A combination as defined in claim 1, in which the wheel chair
wheels are rotatable about an axis of rotation, and the second wheel-engaging
means is movable along a path of motion parallel to said axis of
rotation.
3. A combination as defined in claim 1, including a wheeled vehicle,
the support being attached to said wheeled vehicle.
4. A combination as defined in claim 3, in which the support comprises
an elongated tube, the openings being formed in said tube so as
to be longitudinally spaced therealong.
5. A combination as defined in claim 1, in which the first wheel-engaging
means is movable along said support to an adjusted position, and
including pin means carried by the first wheel-engaging means so
as to be receivable in a selected one of said plurality of support
openings.
6. A combination as defined in claim 1, including a bias member
carried on the second wheel-engaging means, the bias member being
engaged with the pin means to bias it toward the support.
7. In an automotive vehicle, the combination comprising:
a wheel chair having a pair of laterally spaced rotatable wheels
disposed for motion along a first path of motion, each wheel having
a rim and an opening defined by said rim;
an elongated tubular support mounted in said vehicle at right angles
to said first path of motion, said support being engaged with said
pair of wheels and having a length greater than the distance between
the laterally spaced wheels, and a plurality of longitudinally spaced
openings therealong;
a first body slidably mounted on the support so as to be movable
therealong towards an adjusted position; an arm carried by the first
body so as to be receivable in the opening of the rim of the first
of said wheels to prevent motion thereof with respect to the support
and pin means carried by the body so as to be receivable in a selected
opening of the support to releasably prevent motion of the body
along the elongated support;
a second body slidably mounted on the support so as to be movable
toward an adjusted position, an arm carried by the second body so
as to be receivable in the opening of the rim of the second of said
wheels to prevent motion thereof with respect to the support, and
pin means carried by the second body to be receivable in a second
selected opening of the support, whereby the arm carried by the
first body and the arm carried by the second body cooperate in engaging
the wheels to prevent motion of the wheel chair with respect to
the support.
Wheel chair description
BACKGROUND OF THE INVENTION
This invention is related to means for holding a wheel chair in
a relatively fixed position within a school bus, and more particularly
to such a holding device which is adjustable to compensate for variations
in the lateral distance between the larger wheels of conventional
wheel chairs.
School buses are employed for transporting handicapped children
in wheel chairs. To prevent such a wheel chair from moving within
the vehicle, particularly when the vehicle is passing through a
curve or making a turn, means are mounted in the bus for holding
the wheel chair in position. Commercially available devices usually
engage the wheels of the wheel chair to prevent its motion within
the bus body.
One problem with such commercially available devices is that they
do not readily compensate for variances in the lateral distance
between the larger wheels of chairs made by different manufacturers.
In the event of a mismatch between the holding device and the wheels,
sometimes only one wheel is engaged or the wheels are insufficiently
locked into position thereby endangering the safety of the occupant
of the wheel chair.
SUMMARY OF THE INVENTION
The broad purpose of the present invention is to provide means
that can be readily mounted in a vehicle, for holding a wheel chair
in a relatively fixed position, including a pair of wheel-engaging
members which can be adjusted along an elongated support so as to
be locked in a spaced position that accomodates the distance between
the larger wheels of the wheel chair.
Still further objects and advantages of the present invention will
become readily apparent to those skilled in the art to which the
invention pertains upon reference to the following detailed description.
DESCRIPTION OF THE DRAWING
The description refers to the accompanying drawing in which like
reference characters refer to like parts throughout the several
views, and in which:
FIG. 1 is a fragmentary view of a preferred wheel chair holding
means mounted within the body of a school bus;
FIG. 2 is an enlarged plan view showing a wheel chair held in position
by the preferred embodiment of the invention;
FIG. 3 is an enlarged view of one of the wheel-engaging means;
and
FIG. 4 is taken along lines 4--4 of FIG. 3.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Now referring to the drawing, an automotive vehicle preferably
school bus 10, is illustrated in FIG. 1. Bus 10 has door means 12
for receiving a conventional wheel chair 14 to a position in which
it is supported on bus floor 16. Referring to FIG. 2, wheel chair
14 has a pair of laterally spaced large wheels 18 and 20 position
adjacent wall 22 of bus 10. An elongated tubular support 24 is mounted
by brackets 26 and 28 on wall 22 adjacent floor 16. Preferably the
length of support 24 is chosen to accomodate three wheel chairs
mounted side by side. Support 24 is formed with a plurality of openings
30 formed at regularly spaced intervals along the support. Bolts
30A and 30B are mounted on brackets 26 and 28, respectively, and
extend through openings in support 24 to prevent the support from
sliding with respect to the brackets.
A pair of wheel-engaging means 32 and 34 are mounted on support
24. Wheel-engaging means 32 has an arm 36 for engaging wheel 18,
and wheel-engaging means 34 has an arm 38 for engaging wheel 20.
Wheels 18 and 20 each has a rim defining an opening for a wheel-engaging
arm.
Wheel-engaging means 32 and 34 are identical except with respect
to their arms which are bent toward opposite directions, as illustrated
in FIG. 2. Referring to FIGS. 3 and 4, wheel-engaging means 32 comprises
a body 40, slidably mounted on support 24. A bracket 42, mounted
on body 40, carries a pin 44 having a handle 46. Pin 44 is adapted
to be received in a selected one of openings 30 to lock the wheel-engaging
means against motion along the support.
A spring 48 is disposed within bracket 42 and engages a washer
50 attached to pin 44, to bias the pin toward support 24, as illustrated
in FIG. 4. By raising handle 46, the user can remove pin 44 from
opening 30 to permit body 40 to be moved to an adjusted position
along support 24. Preferably there is a one inch spacing between
each neighboring pair of openings.
Referring to FIG. 3, arm 36 is bent in the opposite direction with
respect to arm 38. The lengths of the two arms are so chosen that
they accomodate the one inch spacing between openings 30 to compensate
for fractions of inches in the distance between the wheel chair
wheels. The arms are bent to permit the user to quickly remove each
arm from its respective wheel when the wheel chair is to be removed
from the bus.
In operation, the two wheel-engaing means 32 and 34 are mounted
closely adjacent each other. The wheel chair is then positoned adjacent
the support so that wheels 18 and 20 are disposed on opposite sides
of arms 36 and 38. The user then engages the wheels by raising pins
44 to move the arms to engage their respective wheels and to hold
them firmly in contact with support 24. The two arms cooperate to
prevent any accidental motion of the wheels away from the support.
Although a single pair of arms 36 and 38 are illustrated, preferably
several pairs can be mounted on the support to accomodate several
wheel chairs. |