Detachable propulsive device for wheelchair

A detachable propulsive device for a wheelchair having a bottom frame, including first and second substantially parallel spaced apart side members thereof, said propulsive device, comprising:

• a skeleton frame having a front end and a rear end
• drive means mounted at said front end of said skeleton frame, said drive means including a motor, a power source powering said motor, and a set of front wheels driven by said motor,
• steering means mounted at said front end of said skeleton frame for directionally controlling said set of front wheels, said steering means comprising a handle, and a rotatable wheel mount extending downward from said handle and supporting said set of front wheels thereon,
• dimensional adjusting unit mounted at said rear end of said skeleton frame, said dimensional adjusting unit comprising a length adjusting mechanism;
• and, a width adjusting mechanism, and first and second pairs of clips coupled to said dimensional adjusting unit;
• said length adjusting mechanism including:
• (a) first and second telescopic sliding hollow tubes,
• (b) first fastening means securing said first and second tubes in telescopic interrelationship, said first hollow tube being installed at said rear end of said skeleton frame, and
• (c) a pair of U-shaped cross sliding rails, each of said cross sliding rails being secured to a respective one of said first and second telescopic sliding hollow tubes substantially perpendicularly thereto;
• said width adjusting mechanism including:
• (a) a pair of sliding arms coupled to each of said U-shaped cross sliding rails, each said sliding arms engaging a respective one of said U-shaped cross sliding rail at opposing ends thereof, each of said sliding arms having an inner end slidingly engaged within a respective one of said U-shaped cross sliding rails and an outer end thereof, and
• (b) second fastening means securing each said pair of sliding arms in a selected position with respect to a respective one of said U-shaped cross sliding rails, said outer end of each of said sliding arms carrying a respective one of said first and second pairs of clips, one of said pairs of clips being a V-shaped retaining clip and the other of said pairs of clips being a floating clip attached to said V-shaped retaining clip in a swinging arrangement therewith;
• said first and second pairs of said clips engaging the first and second side members of the bottom frame of the wheelchair and holding the side members enveloped between said V-shaped retaining clip and said floating clip to thereby attach said propulsive device to said wheelchair.