Patent US3169761A successfully refreshed from Google Patents.
Patent US3679257A successfully refreshed from Google Patents.
US3679257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable wheel chair
Assignee: Jacuzzi Whirlpool Bath Inc
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Filing: 1970-05-15
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Granted: 1972-07-25
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Expires: 1990-05-15
Abstract
Abstract A favorable three wheeled wheelchair with solid seat and back, the back being hinged for folding down upon the seat, while the side wheel and front wheel assemblies are hingedly secured for folding in under the seat, the entire wheel chair in its folded condition being of light weight and capable of storage in the trunk of a car.
Inventors
- 👤 Roy A Jacuzzi
- 👤 Kenneth A Jacuzzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:33
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/1005; A61G5/1021; A61G5/1024; A47; A47C; A47C4/00; A47C4/04; A47C4/18; A47C4/20; A61G5/08; A61G5/0808; A61G5/085; A61G5/0858; A61G5/0883; A61G5/0891; A61G5/1008; A61G5/101; A61G5/1035; A61G5/1078; A61G5/12; A61G5/125; A61G5/128; B; B62; B62B; B62B5/00; B62B5/04; B62B2005/0471; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
207 words
A foldable wheel chair comprising, a substantially nonfoldable seat assembly, a pair of side wheel assemblies, each of said wheel assemblies including an inverted A-frame having a hub at its peak and a crossbar adjacent its opposite end, a wheel journalled at said hub, means hingedly securing each of said side wheel assemblies to said seat assembly, to permit folding of said wheel assemblies beneath said seat assembly from an unfolded condition of said hinge means, said hinge means including a bracket depending from said seat assembly and a hinge pin coupling said inverted A-frame to said bracket and means for latching each of said hinge means in its unfolded condition, with its associated wheel assembly in functioning position, said latching means including at least one lug extending upward from said crossbar when said wheel is in functioning position, a latching frame hingedly secured at one end to said seat assembly and including at its opposite end, a lug receiving ring in alignment with and adapted to receive said lug when in its upwardly extending position to lock the associated wheel in functioning position, and means biasing said frame to its lug engaging position to assure locking engagement with said lug during use of said wheel chair.
Claim 2
Dependent Claim
207 words
A foldable wheel chair comprising, a substantially nonfoldable seat assembly, a pair of side wheel assemblies, each of said wheel assemblies including an inverted A-frame having a hub at its peak and a crossbar adjacent its opposite end, a wheel journalled at said hub, means hingedly securing each of said side wheel assemblies to said seat assembly, to permit folding of said wheel assemblies beneath said seat assembly from an unfolded condition of said hinge means, said hinge means including a bracket depending from said seat assembly and a hinge pin coupling said inverted A-frame to said bracket and means for latching each of said hinge means in its unfolded condition, with its associated wheel assembly in functioning position, said latching means including at least one lug extending upward from said crossbar when said wheel is in functioning position, a latching frame hingedly secured at one end to said seat assembly and including at its opposite end, a lug receiving ring in alignment with and adapted to receive said lug when in its upwardly extending position to lock the associated wheel in functioning position, and means biasing said frame to its lug engaging position to assure locking engagement with said lug during use of said wheel chair.
Claim 3
Dependent Claim
47 words
A foldable wheelchair in accordance with claim 1, characterized by a foot rest assembly and means hingedly securing said foot rest assembly to the front portion of said seat assembly, to permit of said foot rest as-sembly to be folded to a position adjacent said seat assembly.
Claim 4
Dependent Claim
64 words
A foldable wheel chair in accordance with claim 1, characterized by a foldable arm rest assembly at each side of said seat assembly, each said arm rest assembly including an arm rest in an out-of-the-way position and in substantially the plane of said seat assembly, and means for raising said arm rest from said out-of-the-way position to a functional position above said seat assembly.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |