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:
Feb. 23, 1993
Filed:
Jun. 11, 1991
Applicant:
Inventors:
Harold T Cook, Jr, Bainbridge Island, WA (US);
Donn B Furlong, Bellevue, WA (US);
Robert A Svendsen, Seattle, WA (US);
Allan P Rustad, Seattle, WA (US);
Assignee:
Marco Seattle, Inc., Seattle, WA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
137580 ; 285136 ;
Abstract
A hydraulic swivel 40 transfers pressurized hydraulic fluid from a stationary spool 50 to a housing 42 mounted for rotation relative to the spool 50. The swivel 40 also carries a drain line 64 placed in fluid communication with the spool/housing interface above and below the pressurized fluid passages so that any fluid leaking from the pressurized fluid passages will find its way to the drain and thus not to the outside of the swivel.