Expandable handles of walk-aiding wheeled frame

Details Expandable handles of walk-aiding wheeled frame Expandable handles of walk-aiding wheeled frame

1992-12-17

1994-10-18

Reese, Randolph A.

Joints and connections

Interfitted members

Clamped members

403 20, 403 82, 403 87, 403110, 403320, 403341, 403383, 403DIG9, 280 15, 2804901, B60D 300

Patent

active

053562372

ABSTRACT:
A walk-aiding wheeled frame comprises base tubes, handle tubes, and fastening devices. The connecting portions of the base tube and the handle tube are polygonal in their cross sections. The base tube is provided with a locking slot. The fastening device comprises a pressing baffle capable of being driven to move by a wrench, and a hexagonal fastening tube provided with a locking baffle corresponding in location to the locking slot of the base tube. The handle tube and the base tube are fastened securely in an end-to-end manner by means of the pressing baffle, which is driven by the wrench to move inwards, and of the locking baffle. Such method of fastening the base tube and the handle tube ensures that the handle tube does not become loosely attached, thereby safeguarding the user of the walk-aiding wheeled frame.

REFERENCES:
patent: 2603495 (1952-07-01), Hermanson

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