The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 1979
Filed:
Apr. 21, 1978
Wesley I Crabiel, Galion, OH (US);
Dresser Industries, Inc., Dallas, TX (US);
Abstract
The invention concerns a vehicle of the type comprising a mobile carrier, a pedestal mounted thereon for rotation about a vertical axis, and a swivel joint connected between the pedestal and the carrier and through which energy is transmitted. The swivel joint comprises a stationary sleeve mounted on the carrier along the vertical axis and a rotary sleeve mounted coaxially around the exterior of the stationary sleeve. The stationary sleeve includes a plurality of passages extending parallel to the axis for transmitting pressurized fluid. The rotary sleeve includes a plurality of fluid ports. The stationary sleeve includes an annular channel, for each passage, communicating the fluid port with the passage during rotation of the pedestal. An upper gear box is mounted at an upper end of the rotary sleeve for rotation therewith, and a lower gear box is mounted at a lower end of the stationary sleeve. A hollow vertical shaft extends coaxially through the stationary and rotary sleeves for transmitting mechanical energy. Upper gears in the upper gear box connect the shaft to a rotary mechanism on the pedestal. Lower gears in the lower gear box connect the shaft to a rotary mechanism on the carrier. A tube extends coaxially through the vertical shaft for receiving a plurality of electrical conductors which conduct electrical energy between the pedestal and carrier.