Patent NL56939C successfully refreshed from Google Patents.
Patent US3905618A successfully refreshed from Google Patents.
US3905618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable riding vehicle
Assignee: DI ACQUISITION Inc A NY CORP
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Filing: 1973-05-10
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Granted: 1975-09-16
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Expires: 1993-05-10
Abstract
Abstract A foldable riding vehicle construction particularly suited for a three-wheeled unit. The front and rear support struts are independently pivotally secured to the horizontal frame member. They are also pivotally joined by a rigid link which is journalled to the rear strut below the frame pivot and to the front strut, also below the frame pivot. Applying a force to one of the struts in a counterclockwise direction results in a translation of the force to the other strut via the link, causing both struts to fold against the frame. A retaining member may be slidably secured to the frame member by means of a diagonal slot and so positioned to engage the rear support strut. When the retaining member is located in its lowermost position within the slot and the rear strut and forward strut are in the erect position the retaining member bears against the rear wall of the rear support strut preventing the struts from folding against the frame. Prior to folding, the retaining member is moved to the uppermost position within the slot to allow the rear support strut to pivot. When the unit has been collapsed the retaining member may then be moved downwardly to the lowermost position in the slot and positioned against the rear support strut to assist in retaining the unit in the folded position. For ease of transport the rear portion of the seat may be hollow to provide a hand support gripping receptacle.
Inventors
- 👤 Andrea Miranda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:04
CPC Classifications
B; B62; B62K; B62K9/00; B62K9/02; B62K15/00; B62K15/006; B62K15/008
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
292 words
A foldable riding vehicle which comprises: a. a frame member including side walls having diagonal slots formed in the rear portions thereof; b. a rear support member pivotally secured to the frame member towards its rear end forming a rear fixed pivot point and received within said frame member and having an upper portion positioned therein; c. a front support member pivotally secured to the frame member at its forward end forming a forward fixed pivot point; d. means secured to the rear and forward support members to allow movement of the vehicle; e. a rigid link pivotally secured at one end to the rear support member adjacent the rear fixed pivot point, and at the other end to the forward support member adjacent the forward fixed pivot point; allowing the application of a force to either the front or rear support members, causing movement of the member to which the force is so applied around its fixed pivot point, and allowing translation of the same force via the linkage and moving pivot point to the other support member to allow simultaneous movement of the other support member around its fixed pivot point, until the support members fold against the frame member; and f. safety means to insure retaining the rear and front support member in erect condition and including a narrow member having fingers extending inwardly of the slots and having downwardly extending portions joined by a lower connecting portion, the slot positioned on the wall to prevent rotational movement of the upper portion of the rear support strut when the fingers are in the lowermost position of the slot and to allow rotational movement of the rear support strut when the fingers are in the uppermost position in the slot.
Claim 2
Dependent Claim
292 words
A foldable riding vehicle which comprises: a. a frame member including side walls having diagonal slots formed in the rear portions thereof; b. a rear support member pivotally secured to the frame member towards its rear end forming a rear fixed pivot point and received within said frame member and having an upper portion positioned therein; c. a front support member pivotally secured to the frame member at its forward end forming a forward fixed pivot point; d. means secured to the rear and forward support members to allow movement of the vehicle; e. a rigid link pivotally secured at one end to the rear support member adjacent the rear fixed pivot point, and at the other end to the forward support member adjacent the forward fixed pivot point; allowing the application of a force to either the front or rear support members, causing movement of the member to which the force is so applied around its fixed pivot point, and allowing translation of the same force via the linkage and moving pivot point to the other support member to allow simultaneous movement of the other support member around its fixed pivot point, until the support members fold against the frame member; and f. safety means to insure retaining the rear and front support member in erect condition and including a narrow member having fingers extending inwardly of the slots and having downwardly extending portions joined by a lower connecting portion, the slot positioned on the wall to prevent rotational movement of the upper portion of the rear support strut when the fingers are in the lowermost position of the slot and to allow rotational movement of the rear support strut when the fingers are in the uppermost position in the slot.
Claim 3
Dependent Claim
15 words
The invention According to claim 1, gripping means for carrying the vehicle in folded condition.
Claim 4
Dependent Claim
56 words
The invention according to claim 2, a seat secured to the top of the frame member, the seat having a hollow channel defined in the underside thereof, the channel receptacle having sufficient depth to receive the fingers of a user so that the seat may be gripped and used to carry the vehicle in folded condition.
Claim 5
Dependent Claim
53 words
The invention according to claim 1, the frame member including an upper wall, said side walls depending from said upper wall, a rear wall, and a bottom wall, the bottom wall ending short of the rear wall, forming an opening, and a slot defined in the bottom wall extending forwardly for a distance.
Claim 6
Dependent Claim
55 words
The invention according to claim 1, the front support member including a front support strut, a steering column journalled in the strut, handle bars secured to the steering column, a front wheel fork secured to the opposite end of the steering column, a front wheel journalled to the fork, and pedals secured to the wheel.
Claim 7
Dependent Claim
31 words
The invention according to claim 1, the rear support member including a rear support strut, an axle, rear wheels journalled to the axle and means journalling the axle to the strut.
Claim 8
Dependent Claim
78 words
The invention according to claim 6, the rear strut including a trunk portion, an upper portion received within the frame member, the upper portion bounded by a lower edge and a forward edge, an opening defined in the upper portion proximate the joinder point of the edges, openings in the frame member aligned with the openings in the upper portions and means to pivotally mount the strut and frame member via the openings with respect to each other.
Claim 9
Dependent Claim
55 words
The invention according to claim 6, the front support member including a front support strut, a steering column journalled in the strut, handle bars secured to the steering column, a front wheel fork secured to the opposite end of the steering column, a front wheel journalled to the fork, and pedals secured to the wheel.
Claim 10
Dependent Claim
142 words
The invention according to claim 8, the front support strut including a rear wall, a first set of dog ears secured to the rear wall and spaced the width thereof and located at the upper portion thereof, openings defined within the dog ears, openings defined within the frame member and aligned with the openings in the dog ears, means pivotally joining the frame member and the dog ears to allow fixed pivotal movement between the frame member and the front support member, a second set of dog ears positioned below the first said end positioned proximate thereto, the second set containing aligned openings, the linkage being received between the dog ears and the forward opening of the link and the fittings of the dog ears being secured by means to allow moving pivotal movement between the link and the forward support strut.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |