Title: Delivery bicycle-trailer

Abstract: A delivery trailer adapted to alternatively be pulled by a bicycle, to be operated as a hand truck or to be collapsed for compact mounting upon the bicycle when not in use. In order to adapt the bicycle-trailer combination for carrying substantial loads, the bicycle has a structural portion of its frame extending rearwardly above its back wheel to provide a mount for the trailer, the collapsible trailer including a parallelogram linkage with associated bracing as well as other features to adapt it for carrying heavy loads.

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Inventors: Sparks, Carl K. (Mill Valley, CA, US)

Application Number: 692666
Filing Date: 1976-06-04
Publication_date: 1977-07-26
Assignee:
Primary Class(es): 280/204 280/40, 280/47.315
Other Classes:
US Patent Ref:

2617670	Nov, 1952	Welsh	280/47.
3100120	Aug, 1963	Cleary	280/204.

Other Refs: 76,770878,044

Jul, 1948	CS
Jan, 1943	FR

Primary Examiner: Peters, Jr., Joseph F.
Assistant Examiner: McGiehan, Donn
Attorney: Fitch, Even, Tabin & Luedeka