Fluid levitating caster integrating load lifting device
Patent 7228594 Issued on June 12, 2007. Estimated Expiration Date: 
March 28, 2025. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 28, 2025. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2134444 3096991 3225380 3390736 3756342 3829116 Air bearing assembly Palletized bulk bag Fluid levitated caster integrating external debris scraper Personal hovercraft with stairway climbing Patent #: 6695084 InventorApplicationNo. 11090359 filed on 03/28/2005US Classes:16/42R, Sliding16/19, Adjustable280/43.24, With nonwheel means for engaging the supporting surface16/32, Leg elevators180/119, Surface contacting control180/124, Expansible chamber280/43.23, Power operated384/12, Fluid bearing206/599, Specified pallet legs180/116, SURFACE EFFECT VEHICLES (I.E., GROUND EFFECT MACHINES)180/117, Having propulsion or control means16/48, Antifrictionally swivelled16/44Spring supportedExaminersPrimary: Sandy, Robert J.Assistant: Jackson, Andre L. Attorney, Agent or FirmForeign Patent References
International ClassesB60B 33/00B60V 1/00 AbstractA fluid levitating caster lifts a heavy load “(17)” off a floor “(18)” with near friction-less-ness for transport has integrated a load lifting device. This extra rise height “(ER)” lifting feature accommodates moving loads “(17)” which have flexible-sagging frames, over uneven floors “(18)”, and which have frames that are not parallel to floor “(18)”. An inflatable bellows “(22)” design of the load lifting device receives its pressurization from fluid levitating caster, and additionally serves as a dampening reservoir to reduce hopping-pressure surges inherent in fluid levitating casters.Field of SearchCASTERSLeg elevators Sliding Adjustable Detachable Sliding For tubular leg Vertically adjustable wheels SURFACE EFFECT VEHICLES (I.E., GROUND EFFECT MACHINES) Surface contacting control With plural cushions With dynamic seal or fluid curtain Dynamic seal or fluid curtain ARTICLE SUPPORTED BY AIR AND MOVED BY MECHANICAL OR MANUAL MEANS | |
