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US 5,207,444 AGranted
Turntable for steerable trailers
OwnerRobert E. Tydemaninventor
Life of this patent
Estimating the term…
Abstract
A steering turntable for the front wheel assembly of trailers and the like is formed of first and second turntable ring members each having cooperating projecting circular wall sections configured to interconnect with each other to prevent separation of the ring members from each other while allowing relative rotation of the ring members. A plastic ring of ultra high molecular weight synthetic resin, such as polyurethane, is interposed between the bearing surfaces of the first and second rings to provide a reduced-friction bearing surface therebetween.
Claims8
A turntable apparatus comprising:
- a) a first turntable ring member having an outwardly facing annular groove,
- b) a plastic bearing ring captured in the annular groove of said first turntable ring member and having an outwardly facing annular groove, and
- c) a second turntable ring member having an inwardly extending, peripheral locking section captured within the annular groove of said bearing ring for securing said first and second ring members together for relative rotation.
A turntable apparatus comprising:
- a) a circular first turntable ring member having projecting circular wall sections together forming a substantially J-shape cross section defining an outwardly facing annular groove,
- b) a circular plastic bearing ring captured within the annular groove of the first turntable ring member and forming an outwardly facing annular groove, and
- c) a second turntable ring member formed in at least two arcuate sections which together form a circular ring member, the second turntable ring member having a circumferential locking section configured to be captured slidably within the confines of the annular groove in said bearing ring, for relative rotation of said first and second turntable ring members.
Dependencies are inferred from the claim text.