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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||16/19 ; 16/32 ; 280/4317 ; 280/4320|
|발명자 / 주소|
|인용정보||피인용 횟수 : 13 인용 특허 : 0|
An improved adjustable wheel structure mainly adapted for use in a trailing vehicle on which a yacht, boat or motorcycle can be mounted for transportation; the present wheel structure is provided with a special nut member having its inner surface half threaded and half smoothed, and the nut member is able to be adjusted forward or backward so that the threaded inner surface thereof can be selectively engaged with a vertically disposed adjusting screw rod which has a smaller diameter than the central through hole of the slidable nut member so that the whe...
An improved adjustable wheel structure adapted for use in a trailing vehicle comprising: an outer tube having a number of facets disposed at the top end thereof with a hand operated shaft being horizontally guided through the faceted portion, and a first bevel gear means being mounted to the shaft and located within said outer tube; an inner tube disposed within said outer tube and having a closed top end which is provided with a hole so that a screw rod can be located therethrough; on the top portion of said inner tube being provided with a peripheral r...