Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Walker type
Patent
1975-09-15
1976-11-23
Schroeder, Werner H.
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Walker type
248166, 248167, 403350, 135 74, F16M 1308
Patent
active
039930882
ABSTRACT:
A folding invalid walker includes an improved mechanism for rigidly locking the walker in its unfolded state. The mechanism comprises a pair of tubular telescoping members each having an inner portion which telescopes into an outer portion. A spring loaded button is used to lock the tubular telescoping member in its extended state. One end of each of the tubular telescoping members is riveted to the rear leg of the walker support and the other end is pivotally connected to a transversely disposed bar connecting both front legs of said walker. The rivet connection is slightly flexible so that the tubular telescoping member can flex a small amount with respect to the rear leg of said support as the walker is folded from its folded to its unfolded state and vice versa. The location of the pivot joint on the rear leg is such that a rivet can be used and a more expensive and less rigid pivot connection can be avoided. The walker also has other improved features including a pair of gussets on the transverse bar for added rigidity; a leg embracing means for improving the connection between the transverse bar and the supports and an improved extensible leg section which increases the extension range of the leg members.
REFERENCES:
patent: 935885 (1909-10-01), Blake
patent: 2397382 (1946-03-01), Smith
patent: 2667914 (1954-02-01), Forbes
patent: 2960148 (1960-11-01), Murcott
patent: 3442276 (1969-05-01), Edwards et al.
patent: 3658079 (1972-04-01), Block
patent: 3688789 (1972-09-01), Bunch
patent: 3783886 (1974-01-01), Thomas
patent: 3833012 (1974-09-01), McAllister
patent: 3851846 (1974-12-01), Long
Berman Conrad L.
Schroeder Werner H.
Temco Products, Inc.
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