Tent – canopy – umbrella – or cane – Canes – sticks – crutches – and walking aids – Crutches
Patent
1997-07-24
1998-06-30
Mai, Lanna
Tent, canopy, umbrella, or cane
Canes, sticks, crutches, and walking aids
Crutches
135 72, A61H 302
Patent
active
057719101
ABSTRACT:
A compactly collapsible, sectional Lofstrand-type crutch. The crutch features four sectional components: a stud section, a lower tubular member, and an upper tubular member, each telescopingly attached to one another along a longitudinal axis, and a tubular support member removably seated on the upper tubular member. The tubular support member features a support handle, which pivots upwardly into a recess defined within the tubular support member, thereby allowing the support handle to be subsumed into the recess and streamlining the folded assembly for storage. The tubular support member has a forearm sleeve for encircling the forearm of the user when the crutch is in use; when in a storage position, the forearm sleeve is pivotable to become aligned parallel and lateral to the tubular support member. The nested arrangement of the telescoping components shorten the overall length of the crutch to a convenient storage size. The tubular support member is easily removed from the upper tubular member at a point below the handle, and folded along side the nested telescoping components. A band to secure the completely nested arrangement and a clip for wearing the nested arrangement on a belt are also provided.
REFERENCES:
patent: 888468 (1908-05-01), Casale
patent: 976638 (1910-11-01), Corey
patent: 2453632 (1948-11-01), Lofstrand, Jr.
patent: 2516852 (1950-08-01), Burry et al.
patent: 2575681 (1951-11-01), Peters
patent: 2788793 (1957-04-01), Abbott
patent: 3272210 (1966-09-01), Boruvko
patent: 3635233 (1972-01-01), Robertson
patent: 3710807 (1973-01-01), Ferry
patent: 3757807 (1973-09-01), Manzo
patent: 4121605 (1978-10-01), Schmerl
patent: 4869280 (1989-09-01), Ewing
patent: 5038811 (1991-08-01), Gilmore
patent: 5329954 (1994-07-01), Miyoshi
Litman Richard C.
Mai Lanna
LandOfFree
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