Combined fill and relief valve
AssigneeDeere & Company
InventorRobert Emil Lottes
Life of this patent
Estimating the term…
Abstract
A combined fill and relief valve is provided for a fluid chamber containing grease under pressure relative to surrounding atmosphere. The valve includes a housing having a longitudinal bore, the longitudinal bore including an inlet and an outlet. The housing also includes a transverse relief port in fluid communication with the atmosphere. A grease fitting is fixed to the housing against relative movement and is in fluid communication with the longitudinal bore. A fill valve assembly is fitted in the longitudinal bore and selectively permits flow therethrough from the inlet to the outlet. A relief valve assembly is fitted in the longitudinal bore and controls fluid passage between the outlet and the relief port.
Claims18
A combined fill and relief valve for a fluid chamber containing grease under pressure relative to surrounding atmosphere, said valve comprising:
- a housing having a longitudinal bore, said longitudinal bore including a first end forming an inlet and a second end forming an outlet;
- a grease fitting fixed to the housing against movement relative thereto, said fitting in fluid communication with the longitudinal bore;
- fill valve assembly fitted in the longitudinal bore and selectively permitting flow therethrough from the inlet to the outlet;
- said housing having transverse relief port in fluid communication the atmosphere;
- and
- a relief valve assembly fitted in the longitudinal bore and controlling fluid passage between the outlet and the relief port.
A combined fill and relief valve for a fluid chamber containing grease under pressure relative to surrounding atmosphere, said valve comprising:
- a housing having a longitudinal bore, said longitudinal bore including a first end forming an inlet and a second end forming an outlet;
- a grease fitting fixed to the housing against movement relative thereto, said fitting in fluid communication with the longitudinal bore;
- said housing having transverse relief port in fluid communication with the atmosphere;
- a fluid fill path including the grease fitting, the longitudinal bore and the outlet;
- a fill valve assembly fitted in the fluid fill path and selectively permitting flow therethrough;
- a fluid relief path including the outlet, the longitudinal bore and the transverse relief port;
- and
- a relief valve assembly fitted in the fluid relief path and controlling fluid passage therethrough.
Dependencies are inferred from the claim text.