Title:
PORTABLE AND COLLAPSIBLE PUSH-PULL WAGON
Document Type and Number:
WIPO Patent Application WO/2024/011593
Kind Code:
A1
Abstract:
A portable and collapsible push-pull wagon, comprising: a traveling wheel assembly, four shock-absorbing elements, a collapsible load-bearing bottom frame, a collapsible main frame, a telescopic handle assembly, and a cloth bag (16). The traveling wheel assembly comprises two fixed wheels (11) arranged at the rear of the wagon and two universal steering wheels (12) arranged at the front thereof; the collapsible load-bearing bottom frame comprises two lower rear connecting members (13), two lower front connecting members (14), and an X-shaped folding load-bearing fork frame (15); the fixed wheels (11) are arranged below the lower rear connecting members (13) by means of the shock-absorbing elements, and the universal steering wheels (12) are arranged below the lower front connecting members (14) by means of the shock-absorbing elements; and the shock-absorbing elements are of one type of a shock-absorbing spring, an air-cylinder type shock absorber and a variable damping shock absorber, or are of a combination of two or more thereof for use.
Inventors:
YANG ZHENHUA (CN)
Application Number:
PCT/CN2022/105992
Publication Date:
January 18, 2024
Filing Date:
July 15, 2022
Export Citation:
Assignee:
QINGDAO HONGRUNFA MACHINERY CO LTD (CN)
QINGDAO RITASHAW MACHINERY CO LTD (CN)
QINGDAO RITASHAW MACHINERY CO LTD (CN)
International Classes:
B62B3/02; B62B5/00; B62B5/06
Foreign References:
| CN211710882U | 2020-10-20 | |||
| CN214267686U | 2021-09-24 | |||
| CN210822360U | 2020-06-23 | |||
| CN216374594U | 2022-04-26 | |||
| CN112519853A | 2021-03-19 | |||
| CN212667418U | 2021-03-09 | |||
| CN107380224A | 2017-11-24 | |||
| CN111038564A | 2020-04-21 | |||
| CN213862325U | 2021-08-03 | |||
| US11370467B1 | 2022-06-28 |
Attorney, Agent or Firm:
BEIJING ZHUANYING PATENT AGENCY CO., LTD. (CN)
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