US3847440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel fitting device
Assignee: Hea Rehab AB
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Filing: 1973-05-29
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Granted: 1974-11-12
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Expires: 1993-05-29
Abstract
Abstract In wheel chairs and similar transport means, it is desirous that each wheel be provided with a brake mechanism and be so fitted that it may easily be removed for exchange in the case of a possible puncture or the like. This is obtained in that the wheel is non-rotatably but disconnectedly fitted to one end of a wheel shaft which is rotatably supported in a bearing, with the brake mechanism being non-rotatably connected to the opposite end of the wheel shaft. By this arrangement, the wheel may easily be removed from the wheel chair whereas the bearing, the brake mechanism and the wheel shaft are left in position.
Inventors
- 👤 B Mattsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:18
CPC Classifications
B; B60; B60B; B60B11/00; B60B11/02; B60B27/00; B60B27/06; B60B27/065; B60B35/00; B60B35/12; B60B37/00; B60B37/04; B62; B62B; B62B5/00; B62B5/04; B60B2310/00; B60B2310/30; B60B2310/302; B60B2310/305; B60B2380/00; B60B2380/10; B60B2380/12; B60Y; B60Y2200/00; B60Y2200/80; B60Y2200/84; Y; Y10; Y10S; Y10S180/00; Y10S180/907; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
80 words
A device for fitting a brake-provided wheel in an easily detachable manner to a wheel chair or a similar transport means having a load-carrying body, comprising a bearing assembly mounted to the load-carrying body, a tubular wheel shaft rotatably supported in said bearing assembly, said wheel shaft having opposite ends, a brake mechanism non-rotatably fitted to one end of said tubular wheel shaft, and a wheel hub nonrotatably yet detachably fitted to the opposite end of said tubular wheel shaft.
Claim 2
Independent Claim
80 words
A device for fitting a brake-provided wheel in an easily detachable manner to a wheel chair or a similar transport means having a load-carrying body, comprising a bearing assembly mounted to the load-carrying body, a tubular wheel shaft rotatably supported in said bearing assembly, said wheel shaft having opposite ends, a brake mechanism non-rotatably fitted to one end of said tubular wheel shaft, and a wheel hub nonrotatably yet detachably fitted to the opposite end of said tubular wheel shaft.
Claim 3
Dependent Claim
47 words
The device as claimed in claim 1 wherein a bushing is fixed to the wheel hub, said bushing at one end having at least one axial slot, with the tubular wheel shaft being provided with at least one radially projecting pin designed to engage in said slot.
Claim 4
Dependent Claim
53 words
The device as claimed in claim 1 in which the wheel hub is provided with an enlarged end portion constituting an annular space around the shaft end, said space being intended to receive a nut which can be screwed onto a threaded shaft end for securing the wheel hub to the wheel shaft.
Claim 5
Dependent Claim
45 words
The device as claimed in claim 1 in which a rod is rotatably enclosed by the tubular wheel shaft, said rod being designed to be connected to a second wheel shaft, which is fitted to the wheel chair side opposite to the first-named wheel shaft.
References Cited (Backward Citations)
DE1943127A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |