Multifunction wheelchair handbrake especially adapted for ramp climbing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 24, 1985
Issued Date -
N/A
app pub date -
Dec 14, 1981
filing date -
Jan 21, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multiposition handbrake for a wheelchair or the like is provided in accordance with this invention, which involves a housing in which an elongate handle is pivotally disposed. A portion adapted to be grasped by the user of the wheelchair is provided above the pivot point of the handle, and a wheel-contacting braking assembly is provided below the pivot point. The housing is provided with a plurality of notches in which a midportion of the handle may be placed. With the notch in which the handle is residing at a given moment determining the relationship of the braking assembly to a wheel of the wheelchair. The wheel-contacting portion includes a toothed pad which may be slidably mounted such that on occasion, a brake-intensification action occurs. When the handle is in the first notch, the teeth are spaced away from the tread portion of the wheel, whereas when the handle is in the second notch, the teeth of the pad have light contact with the tread of the wheel. The arrangement of the pad is preferably such as to inhibit wheel rotation only in one direction, thereby simplifying the efforts of the wheelchair user to ascend a ramp or hill. The handle, when in the third notch, causes said teeth of the pad to forcibly contact the tread of the wheel, and thus provide considerable security to the wheelchair user, in that any rotation of the wheels is effectively prevented.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
| Patent Owner | Address | |
|---|---|---|
| RENFRO JULIAN C | WINTER PARK FL |
International Classification(s)
Inventor(s)
| Inventor Name | Address | # of filed Patents | Total Citations |
|---|---|---|---|
| DeWoody, Robert O | Jacksonville, FL | 1 | 115 |
| Hollerich, Ralph M | Orlando, FL | 1 | 115 |
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Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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