Land vehicles – Wheeled – Convertible
Patent
1995-12-13
1997-06-10
Johnson, Brian L.
Land vehicles
Wheeled
Convertible
280 11, 280 4324, 280 8701, 280 4734, 297131, 472102, B62B 922
Patent
active
056368534
ABSTRACT:
A mechanism is provided for extending and retracting wheels on a baby rocking carriage which includes two parallel arcuate beams, four base members each fixedly mounted on one distal end of each of the arcuate beams and having a passage and a cavity each defined in an underside thereof, four wheel modules each pivotally disposed on an underside of a respective one of the four base members. The mechanism includes a sleeve rotatably mounted in the passage of each of the base members and having an extension pivotally engaged with each of the wheel modules. A control member has a plug fixedly mounted in a chamber defined in the sleeve to rotate therewith and has a lug extending outwards of the sleeve. A catch member is pivotally mounted in an opening defined in the lug and has a first end portion and a second end portion having a boss detachably received in the cavity of each of the base members. A biasing member is mounted between the first end portion of the catch member and the lug.
REFERENCES:
patent: 1468682 (1923-09-01), Wallace
patent: 2461609 (1949-02-01), Light
patent: 2541327 (1951-02-01), Billinghurst
patent: 2716439 (1955-08-01), Feist
patent: 3944241 (1976-03-01), Epelbaum
patent: 4265461 (1981-05-01), Okubo
patent: 4722537 (1988-02-01), Chau-Pin
patent: 5203581 (1993-04-01), Jankowski
patent: 5373708 (1994-12-01), Dumoulin, Jr.
Johnson Brian L.
Mar Michael
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