Patent US3981516A successfully refreshed from Google Patents.
US3981516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicycle and tricycle of low wind resistance and of low center of gravity
Assignee: Huffy Corp
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Filing: 1975-03-21
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Granted: 1976-09-21
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Expires: 1995-03-21
Abstract
Abstract The invention provides a light weight bicycle or tricycle of low wind resistance and low center of gravity principally composed of two frames over-lapping in tandem and joined by a journaled bearing. The front part of the front frame carries a bracket for the front wheel; the rear part of this frame is first depressed and then bent upwardly to provide a seat for the rider and a back rest. The rear frame largely extends under the rear part of the front frame and carries a rear bracket (or brackets) for the rear wheel (or wheels). The front of this frame is bent substantially vertically upwardly and is joined to the first frame by a bearing which engages an upwardly rearwardly slanted journal located at about the midpoint of the front frame. The vehicle is steered by a handlebar which turns the first frame relative to the second. The vehicle is propelled by conventional pedal or motor drive on the front wheel.
Inventors
- 👤 Bjorn Haggkvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:13
CPC Classifications
B; B62; B62K; B62K5/00; B62K5/02; B62K21/00; B62K21/18; B62K3/00; B62K3/005; B62K5/06; B62K5/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
179 words
A vehicle comprising in combination a forward frame having a front wheel rotably mounted at a forward point thereof, a depressed middle seat part, and an upwardly inclined rear back rest part; a rear frame positioned in tandem below and partly behind said first frame, the forward part of said rear frame being upwardly inclined, the front of said rear frame being pivotally joined to said forward frame at a place in said forward frame which is between the forward part of the seat part of said frame and the rear part of the front wheel of said vehicle, said pivot being inclined at such angle that the axis thereof, extended downwardly, substantially intersects the point of said forward wheel which normally is in contact with the ground, at least one of said frames being longer than half the wheelbase of said vehicle; at least one rear wheel being rotably mounted at a rear portion of said rear frame; means to pivot said frames relative to each other and thereby steer said vehicle; and drive means for said vehicle.
Claim 2
Dependent Claim
179 words
A vehicle comprising in combination a forward frame having a front wheel rotably mounted at a forward point thereof, a depressed middle seat part, and an upwardly inclined rear back rest part; a rear frame positioned in tandem below and partly behind said first frame, the forward part of said rear frame being upwardly inclined, the front of said rear frame being pivotally joined to said forward frame at a place in said forward frame which is between the forward part of the seat part of said frame and the rear part of the front wheel of said vehicle, said pivot being inclined at such angle that the axis thereof, extended downwardly, substantially intersects the point of said forward wheel which normally is in contact with the ground, at least one of said frames being longer than half the wheelbase of said vehicle; at least one rear wheel being rotably mounted at a rear portion of said rear frame; means to pivot said frames relative to each other and thereby steer said vehicle; and drive means for said vehicle.
Claim 3
Dependent Claim
55 words
A vehicle according to claim 1 wherein said forward first frame carries at a point between the forward limit of said seat and the rear part of said wheel a bracket one leg of which is substantially vertical and the other leg of which is substantially at right angles to line a of FIG. 1.
Claim 4
Dependent Claim
36 words
A vehicle to claim 1 wherein said forward frame extends beyond said front wheel, and pedal means adapted to drive said front wheel are connected to said frame at a point forward of said front wheel.
Claim 5
Dependent Claim
12 words
A vehicle according to claim 1 having a pair of rear wheels.
Claim 6
Dependent Claim
26 words
A vehicle according to claim 1 wherein said seat part is lower than the point at which said rear frame and said forward frame are joined.
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) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |