US3747955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tandem trailer for a bicycle
Assignee: Individual
•
Filing: 1971-12-23
•
Granted: 1973-07-24
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Expires: 1991-12-23
Abstract
Abstract A tandem trailer designed to be detachably attached to a bicycle wherein the trailer comprises a frame provided with upper and lower horizontal frame members joined by a vertical frame member such that wheels mounted on the lower frame member support the upper frame member in a substantially horizontal position above the rear wheel of a bicycle so that the bicycle and frame are free to turn relative to each other, the upper frame member having a loop adapted to be placed about the seat ahead of the seat post, a fixed pivot pin mounted on the top bar of the bicycle frame forwardly of the seat post on which the loop is adapted to be pivotally impaled, and spring-biased clips adapted to releasably hold the loop on the pin.
Inventors
- 👤 Alpine A Mac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:43
CPC Classifications
B; B62; B62K; B62K27/00; B62K27/10; B62K27/12; B62K27/003
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
195 words
The combination with a bicycle, of a tandem trailer comprising a chassis embodying vertically spaced, substantially parallel frame members joined by a vertical frame member, a pair of wheels journaled at the distal end of the lower horizontal frame member, a loop at the distal end of the higher horizontal frame member adapted to be placed over the seat of the bicycle about the seat supporting post, said wheels being adapted to support the trailer when the loop is disposed about the seat supporting post with the upper frame member in a substantially horizontal position clearing the top of the rear wheel of the bicycle so that the rear wheel of the bicycle and trailer can be disposed at angles to each other without binding against each other, and means for releasably pivotally connecting the loop to the top bar of the bicycle frame, comprising a pin projecting upwardly from the top bar forwardly of said seat post but beneath the seat, said loop containing a vertically disposed, diametrical hole for pivotally receiving the pin, and spring clamp means adapted to embrace and hold the loop on the pin when the loop is mounted thereon.
Claim 2
Dependent Claim
195 words
The combination with a bicycle, of a tandem trailer comprising a chassis embodying vertically spaced, substantially parallel frame members joined by a vertical frame member, a pair of wheels journaled at the distal end of the lower horizontal frame member, a loop at the distal end of the higher horizontal frame member adapted to be placed over the seat of the bicycle about the seat supporting post, said wheels being adapted to support the trailer when the loop is disposed about the seat supporting post with the upper frame member in a substantially horizontal position clearing the top of the rear wheel of the bicycle so that the rear wheel of the bicycle and trailer can be disposed at angles to each other without binding against each other, and means for releasably pivotally connecting the loop to the top bar of the bicycle frame, comprising a pin projecting upwardly from the top bar forwardly of said seat post but beneath the seat, said loop containing a vertically disposed, diametrical hole for pivotally receiving the pin, and spring clamp means adapted to embrace and hold the loop on the pin when the loop is mounted thereon.
Claim 3
Dependent Claim
24 words
The combination of claim 1, wherein a seat is mounted on the lower horizontal frame member intermediate the vertical frame member and the wheels.
Claim 4
Dependent Claim
63 words
The combination of claim 2, wherein a skirt is secured to the frame members, said skirt commencing on the lower horizontal frame member beneath the seat, extending forwardly and upwardly of the vertical frame member and forwardly onto the upper frame member, said skirt constituting a deflector and the portion of the skirt on the lower horizontal frame member constituting a foot rest.
Claim 5
Dependent Claim
19 words
The combination of claim 2, wherein a receptacle is mounted on the lower horizontal frame member behind the seat.
Claim 6
Dependent Claim
46 words
The combination of claim 1, wherein a stand is pivotally mounted on the lower horizontal member forwardly of the wheels, said stand being rotatable to a position substantially perpendicular to the frame to hold the latter in a substantially horizontal position when detached from the bicycle.
Claim 7
Dependent Claim
22 words
The combination of claim 5, wherein the stand is adapted to be folded rearwardly into alignment with the lower horizontal frame member.
Claim 8
Dependent Claim
34 words
The combination of claim 1, wherein the pin comprises a shank of a bolt inserted through the top bar from the lower side and retained by nuts screwed onto it against the top side.
Claim 9
Dependent Claim
56 words
The combination of claim 1, wherein the spring clamp means comprises a bar pivotally mounted on the pin in transverse relation to the bar and opposed upstanding spring-biased fingers secured to the opposite ends of the bar, said spring-fingers being oppositely bowed to receive between them portions of the loop at each side of the pin.
Claim 10
Dependent Claim
192 words
The combination with a bicycle, of a tandem trailer comprising a chassis embodying a stepped frame having upper and lower, substantially horizontal portions, a pair of wheels journaled at the distal end of the lower portion, a loop at the distal end of the upper portion adapted to be placed over the seat of a bicycle about the seat supporting post, said upper horizontal portion being so vertically disposed that the wheels at the distal end of the lower portion support the trailer when the loop is disposed about the seat supporting post with the upper horizontal portion above the top of the rear wheels, and so that the lower horizontal portion can be turned at any angle to the bicycle without engaging the wheel, and means for releasably pivotally connecting the loop to the top bar of the bicycle frame comprising a pin projecting upwardly from the top bar forwardly of said seat post but beneath the seat, said loop containing a vertically disposed, diametrical hole for pivotally receiving the pin, and spring clamp means adapted to embrace and hold the loop on the pin when the loop is impaled thereon.
Claim 11
Dependent Claim
192 words
The combination with a bicycle, of a tandem trailer comprising a chassis embodying a stepped frame having upper and lower, substantially horizontal portions, a pair of wheels journaled at the distal end of the lower portion, a loop at the distal end of the upper portion adapted to be placed over the seat of a bicycle about the seat supporting post, said upper horizontal portion being so vertically disposed that the wheels at the distal end of the lower portion support the trailer when the loop is disposed about the seat supporting post with the upper horizontal portion above the top of the rear wheels, and so that the lower horizontal portion can be turned at any angle to the bicycle without engaging the wheel, and means for releasably pivotally connecting the loop to the top bar of the bicycle frame comprising a pin projecting upwardly from the top bar forwardly of said seat post but beneath the seat, said loop containing a vertically disposed, diametrical hole for pivotally receiving the pin, and spring clamp means adapted to embrace and hold the loop on the pin when the loop is impaled thereon.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |