Patent US4861058A successfully refreshed from Google Patents.
US4861058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disassemblable sulky vehicle
Assignee: Individual
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Filing: 1987-11-18
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Granted: 1989-08-29
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Expires: 2007-11-18
Abstract
Abstract A disassemblable three wheeled, sulky vehicle for the handicapped and others desiring assistance has a steerable front wheel drive unit comprising a steering column mounting assembly with a motor driven wheel. A sulky frame assembly supports a pair of transversely spaced apart rear wheels in tricycle formation with said front wheel and a coupling assembly detachably secures the front wheel drive unit and sulky frame assembly. A seat structure is mounted on the upper end of said frame assembly which comprises a bottom frame member which has a pair of upwardly extending, relatively foldable frames for supporting said seat structure.
Inventors
- 👤 Thomas A. Cresswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:56
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/04; A61G5/041; A61G5/042; A61G5/047; A61G5/08; A61G5/0891; A61G5/10; A61G5/1051; Y; Y10; Y10S; Y10S180/00; Y10S180/907
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
191 words
A demountable three-wheeled, sulky vehicle for the handicapped and others desiring assistance comprising: a. a front wheel steering unit comprising a steering column mounting assembly and a front wheel; b. sulky frame means for connection to said front wheel steering unit including rigid axle means for supporting a pair of transversely spaced apart rear wheels in tricycle formation with said front wheel, and including rear wheels on said axle means; said axle means including transversely spaced axles and a rigid axle support member rigidly spanning said axles; c. coupling means for detachably securing the front wheel steering unit and sulky frame means comprising mating components; d. said coupling means incorporating latch means for releasably locking said components in interconnected position; e. a seat support structure for said sulky frame means including a seat mount and seat; f. said seat support structure also including a rear seat support frame comprising upwardly extending, vertically transversely inwardly inclined posts connected between said seat mount and axle means; and g. a releasable front seat structure brace element extending downwardly at a vertically inclined angle connected between said seat support structure and said sulky frame means.
Claim 2
Dependent Claim
191 words
A demountable three-wheeled, sulky vehicle for the handicapped and others desiring assistance comprising: a. a front wheel steering unit comprising a steering column mounting assembly and a front wheel; b. sulky frame means for connection to said front wheel steering unit including rigid axle means for supporting a pair of transversely spaced apart rear wheels in tricycle formation with said front wheel, and including rear wheels on said axle means; said axle means including transversely spaced axles and a rigid axle support member rigidly spanning said axles; c. coupling means for detachably securing the front wheel steering unit and sulky frame means comprising mating components; d. said coupling means incorporating latch means for releasably locking said components in interconnected position; e. a seat support structure for said sulky frame means including a seat mount and seat; f. said seat support structure also including a rear seat support frame comprising upwardly extending, vertically transversely inwardly inclined posts connected between said seat mount and axle means; and g. a releasable front seat structure brace element extending downwardly at a vertically inclined angle connected between said seat support structure and said sulky frame means.
Claim 3
Dependent Claim
45 words
The invention defined in claim 1 wherein one of said components is a projection with a vertically upwardly extending hoe-like planar blade thereon and the other component is a scabbard open at its one end to provide a planar slit for snugly receiving said blade.
Claim 4
Dependent Claim
22 words
The invention defined in claim 2 wherein a tow bar is interconnected between said front wheel unit and said sulky frame means.
Claim 5
Dependent Claim
106 words
The invention defined in claim 2 wherein said scabbard has side, front and rear walls receiving said blade between them, and said walls and blade have aligned openings; a lock plate with stud means extending through the openings; said stud means having a recess therein; detent plunger means normally biased to be received in said recess but movable outwardly out of said recess; means for locking said plunger means in received position; and manipulatable means for moving said lock plate to remove said stud means from said openings in said blade and one of said front and rear walls when said plunger means is moved outwardly.
Claim 6
Dependent Claim
33 words
The invention defined in claim 4 wherein said means for locking said plunger means comprises a plunger housing having a threaded portion and said plunger has a threaded portion adapted to mate therewith.
Claim 7
Dependent Claim
25 words
The invention defined in claim 5 wherein a spring is provided in said housing in engagement with the plunger means to bias said plunger means.
Claim 8
Dependent Claim
188 words
A disassemblable three wheeled, sulky vehicle for the handicapped and others desiring assistance comprising: a. a steerable front wheel unit comprising a steering column mounting assembly connected with a front wheel; b. a sulky frame assembly for supporting a pair of transversely spaced apart rear wheels in tricycle formation with said front wheel, and including a pair of transversely spaced rigid axle means with rear wheels journaled thereon; c. a towing part on said front wheel unit; d. coupling means for detachably securing the towing part and sulky frame assembly comprising interacting components; e. said coupling means incorporating latch means for releasably locking said components in interconnected position; f. a seat structure for said sulky frame assembly mounted on the upper end of said sulky frame assembly; g. said sulky frame assembly comprising a bottom frame having a rear rigid axle means supporting member rigidly spanning said pair of rigid axle means; and h. a pair of upwardly extending demountable frame means for supporting said seat structure from said bottom frame, said seat supporting frames means being releasable to fold into a juxtaposed position with said bottom frame.
Claim 9
Dependent Claim
188 words
A disassemblable three wheeled, sulky vehicle for the handicapped and others desiring assistance comprising: a. a steerable front wheel unit comprising a steering column mounting assembly connected with a front wheel; b. a sulky frame assembly for supporting a pair of transversely spaced apart rear wheels in tricycle formation with said front wheel, and including a pair of transversely spaced rigid axle means with rear wheels journaled thereon; c. a towing part on said front wheel unit; d. coupling means for detachably securing the towing part and sulky frame assembly comprising interacting components; e. said coupling means incorporating latch means for releasably locking said components in interconnected position; f. a seat structure for said sulky frame assembly mounted on the upper end of said sulky frame assembly; g. said sulky frame assembly comprising a bottom frame having a rear rigid axle means supporting member rigidly spanning said pair of rigid axle means; and h. a pair of upwardly extending demountable frame means for supporting said seat structure from said bottom frame, said seat supporting frames means being releasable to fold into a juxtaposed position with said bottom frame.
Claim 10
Dependent Claim
28 words
The invention defined in claim 7 wherein one of said upwardly extending frame means is pivotally connected to said bottom frame and releasably secured to said seat structure.
Claim 11
Dependent Claim
29 words
The invention defined in claim 7 wherein one of said upwardly extending frame means is a front strut member which releasably connects between said seat structure and bottom frame.
Claim 12
Dependent Claim
19 words
The invention defined in claim 9 wherein said seat structure has a socket for pivotally mounting said strut member.
Claim 13
Dependent Claim
19 words
The invention defined in claim 7 wherein said bottom frame is pivotally mounted on said axle means supporting member.
Claim 14
Dependent Claim
40 words
The invention defined in claim 7 wherein said tow bar is releasably coupled to said sulky frame assembly; said coupling means comprising interacting planar blade and planar scabbard components, and latch means for releasably locking said components in interconnecting position.
Claim 15
Dependent Claim
105 words
The invention defined in claim 12 wherein said scabbard has front and rear walls receiving said blade between them, and said walls and blade have aligned openings; a lock plate with stud means extending through the openings; said stud means having a recess therein; detent plunger means normally biased to be received in said recess but movable outwardly out of said recess; means for locking said plunger means in received position; and manipulatable means for moving said lock plate to remove said stud means from said openings in said blade and one of said front and rear walls when said plunger means is moved outwardly.
Claim 16
Dependent Claim
64 words
The invention defined in claim 7 wherein said axle means includes a wheel journaling fitting receiving each end of said axle means supporting member; each fitting and end of said rigid axle means supporting member having aligned openings therein; and a releasable plunger received in said openings for releasably securing said fittings in fixed position on said ends of said axle means supporting member.
Claim 17
Dependent Claim
45 words
The invention defined in claim 14 wherein said releasable plunger is normally biased by a plunger housing and spring to be received in said openings; and threaded cap means on said plunger has threaded engagement with said housing to lock said plunger in axial position.
Claim 18
Dependent Claim
35 words
The invention defined in claim 7 wherein said tow bar is an angle shaped member having a raised platform which releasably couples to said drive unit; said angle shaped member carrying laterally projecting foot rests.
References Cited (Backward Citations)
FR588995A
Cited
US2771145A
Cited
US3425708A
Cited
US3486765A
Cited
US4392690A
Cited
GB2118495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |