Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Crutches
Patent
1993-12-17
1996-01-09
Mai, Lanna
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Crutches
135 76, A61H 302
Patent
active
054820723
ABSTRACT:
The Versatile and Universal Handle has a bilaterally symmetrical, curvilinear shape of predetermined proportions with a tapered, variable grip. The handle includes a proximal gripping area, an intermediate area, and a distal area. The proximal gripping area preferably makes an angle of between eight degrees and fifteen degrees with respect to the intermediate area. The intermediate area preferably makes an angle of approximately one degree to five degrees with respect to the distal area. These three areas flow smoothly in transition from one to the next. In cross-section the handle appears as an ellipse with its exact shape, eccentricity, and size varying considerably with position along the major axis. The cross-sectional shape through the mid-section of the proximal gripping ares is very near circular with a markedly smaller cross-sectional area than at either end of the proximal gripping area. The Versatile and Universal Handle, by means of its unique shape, promotes correct posture and ergonomically correct patterns of movement. Further, the prominent arch of the handle in combination with its overall unique shape creates a substantial contact surface area that conforms to a natural grip of the hand. The handle may be used in different hand positions including a reversed grip. The handle, designed for use on a long cane for the blind, is applicable to other implements, including weight bearing and support devices.
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Ian Chong, et al., The Human Factor, May/Jun. 1983, pp. 30-32.
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