Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Combined and convertible
Patent
1996-07-15
1998-10-13
Mai, Lanna
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Combined and convertible
135 67, 135 74, A45B 300
Patent
active
058197729
ABSTRACT:
A walker which includes a rectangular open back frame, two handrails respectively connected to the two opposite ends of the back frame at right angles and disposed in parallel to each other, each handrail having a sliding track disposed in a sloping position, two front wheel assemblies and two rear wheel assemblies respectively coupled to the handrails at the bottom, a seat frame, and two suspension links respectively and slidably coupled to the sliding tracks to hold the seat frame between the handrails.
REFERENCES:
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patent: 3690652 (1972-09-01), Schneider
patent: 3945389 (1976-03-01), Smith
patent: 4162101 (1979-07-01), McCague, Sr. et al.
patent: 4251105 (1981-02-01), Barker
patent: 4643211 (1987-02-01), Morris et al.
patent: 4800910 (1989-01-01), Gamm
patent: 4907839 (1990-03-01), Rose et al.
patent: 5133377 (1992-07-01), Truxillo
patent: 5353824 (1994-10-01), Woods et al.
patent: 5524657 (1996-06-01), Jih
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