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US 11,993,117 B2Granted
Twin tube damper with remote gas reservoir
AssigneeFox Factory, Inc.
InventorChristopher Paul Cox
Life of this patent
Estimating the term…
Abstract
A damper is provided having a twin tube construction interconnected to a gas reservoir. The connection of each of the inner and outer volumes of the twin tube to the gas reservoir is independently valved, and each of these valves are independently settable to change the differential pressure thereacross at which they open. The damper provides flow passages directly from the inner and outer volumes to enable flow form the compression to rebound sides thereof, as well as through the valved connections to the gas reservoir and at least one valved opening in the damper piston.
Claims10
A fluid damper comprising:
- an inner tube forming an inner fluid volume;
- an outer tube forming an outer fluid volume;
- a plurality of flow passages extending through said inner tube to enable fluid communication between said inner fluid volume and said outer fluid volume, wherein at least one opening of said flow passage is not formed in a side wall of said inner tube;
- a remote reservoir in fluid communication with said inner fluid volume and said outer fluid volume, said remote reservoir comprising:
- a fluid portion;
- a gas portion;
- and
- a floating piston separating said fluid portion and said gas portion;
- a valved interconnection fluidically coupling said remote reservoir with said inner fluid volume and said outer fluid volume, said valved interconnection comprising:
- a first flow passage extending between said inner fluid volume and said fluid portion of said remote reservoir;
- a second flow passage extending between said outer fluid volume and said fluid portion of said remote reservoir;
- and
- at least one valve interposed in at least one of said first flow passage and said second flow passage, wherein said at least one valve controls fluid flow through said at least one of said first flow passage and said second flow passage, wherein said valved interconnection is at least partially enclosed by a housing having an outer surface, said outer surface of said housing having visible indicia formed thereon;
- a damping piston moveable within said inner tube and connected to a shaft extending outwardly of said inner tube through a sealed end thereof, movement of said damping piston enabling fluid to flow between one side of said damping piston and said fluid portion of said remote reservoir via said valved interconnection and at least one of said inner fluid volume and said outer fluid volume, said damping piston sealingly isolates said inner tube into a compression volume and a rebound volume, wherein said rebound volume is in continuous fluid communication with said outer fluid volume of said outer tube;
- and
- an adjustment member mechanically coupled with said at least one valve, said adjustment member configured to adjust said at least one valve, said adjustment member disposed proximate said housing of said valved interconnection, said adjustment member further comprising:
- a head portion;
- and
- a tool boss formed into said head portion, said tool boss configured to receive a tool therein, said tool boss having an alignment mark thereon, said alignment mark of said tool boss and said visible indicia formed on said housing of said valved interconnection configured to cooperatively provide a visible indication of a setting for said at least one valve as said at least one valve is adjusted by said adjustment member.
16 more elements
Dependencies are inferred from the claim text.