초록 ▼

The invention provides a seat comprised of spaced rectangular frame members formed of tubular plastic, the frame members being held together by at least three tubular cross members which join to the frame members by means of mechanical pressure fitting. Around the cross member is provided a webbing

The invention provides a seat comprised of spaced rectangular frame members formed of tubular plastic, the frame members being held together by at least three tubular cross members which join to the frame members by means of mechanical pressure fitting. Around the cross member is provided a webbing in a triangular-fashion. The seat has two positions, or seating modes, effected by a rotation of 90°. The mechanical pressure fittings comprise an expansible shaft having an outside diameter substantially the same as a tube into which it resides. The shaft is expanded by rotating a bolt which associates the shaft with an expansion wedge. The fitting further connects to a second tube transverse to the first, through the means of the same bolt and while avoiding compression of the second tube by way of an internal spacer element.

대표청구항 ▼

A connector for transversely joining first and second hollow tubular members, the connector comprising: a first extension having an outer surface conforming generally to the inner surface of said first member for extending axially thereinto, said first extension further having a frusto-conical reces

A connector for transversely joining first and second hollow tubular members, the connector comprising: a first extension having an outer surface conforming generally to the inner surface of said first member for extending axially thereinto, said first extension further having a frusto-conical recess formed therein and means in the outer surface of said first extension to permit expansion thereof; plug means having a frusto-conical outer surface conforming generally to the interior surface of said first extension; a second extension integral with said first extension but oppositely facing, said second extension having an outer end portion with a contoured surface adapted to abut in full contact with said second member and having an outer surface smaller than the inner surface of the second member and capable of extending transversely thereinto; and biasing means for simultaneously locking said second member to said connector and urging said plug means to maintain said first extension in expansive engagement with said first member.