Tow bar assembly and dolly comprising the same

The present invention provides a tow bar assembly, which may be retrofitted to a dolly while maintaining convenient space saving properties of permanently fitted tow bars. The novel tow bar assembly includes a tow bar (121), a shaft (122) and a biasing member (123), such as a spring, biasing the tow...

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Bibliographic Details
Main Author GRONHOLM JACK
Format Patent
LanguageChinese
English
Published 01.08.2017
Subjects
HAND-PROPELLED VEHICLES, e.g. HAND CARTS, PERAMBULATORS
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
PERFORMING OPERATIONS
SLEDGES
TRANSPORTING
VEHICLE CONNECTIONS
VEHICLES IN GENERAL
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Summary:The present invention provides a tow bar assembly, which may be retrofitted to a dolly while maintaining convenient space saving properties of permanently fitted tow bars. The novel tow bar assembly includes a tow bar (121), a shaft (122) and a biasing member (123), such as a spring, biasing the tow bar (121) towards an upright orientation about an axis of revolution(R). The shaft (122) has a first end (122A) and a second end (122B), which opposes the first end (122A). The shaft (122) connects the tow bar (121) to the dolly (100) from the ends (122A, 122B) so as to provide rotation of the tow bar (121) in respect to the dolly (100) about the axis of revolution (R). The shaft (122) features an inner cavity, which extends along the axis of revolution (R). The biasing member (123) is arranged into the cavity of the shaft (122) and rotationally secured thereto. The shaft (122) also features a first end plug (124) at the first end (122A) of the shaft (122) for enclosing the biasing member (123) to the cavity. The
Bibliography:Application Number: CN201580062857