Apparatus for displacing high viscous substances
OwnerRichard S. Gurneyinventor
Life of this patent
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Abstract
An apparatus for displacing a high viscous substance, such as grease, which comprises a positive displacement-type pump. The chamber of the pump is in communication with a second chamber defined by a tubular sleeve that is slidably displaceable on the body of the pump, thereby rendering the volume of the second chamber variable and, as such, providing for effective displacement of grease into the chamber of the pump via a valve arrangement. A closure member is disposed to control charging of the second chamber with grease and the displacement of such grease from the second chamber into the chamber of the pump. Also, simultaneously with the charging of the chamber the pump can displace grease therefrom for lubricating or other applications.
Claims14
An apparatus for displacing a high viscous substance, which apparatus comprises
- an elongate support body defining a first chamber therein, an inlet opening defined at one end of said support body leading into said first chamber and an elongate passage leading into said first chamber from the opposite end of said support body;
- a tubular sleeve that is slidably located on said support body and defines an inlet end which can extend beyond the end of said support body inlet opening, a second chamber being defined by said tubular sleeve between its inlet end and the end of said support body located within said tubular sleeve, the volume of said second chamber being variable through the displacement of said support body with respect to said tubular sleeve;
- an elongate rod located within the passage defined by said support body, so that said support body is slidably located on said rod, said rod defining an elongate passage therein leading from an inlet end, at one end of said rod which is in direct communication with said first chamber defined by said support body, and outlet end, defined near the opposite end of said rod where it extends from said support body, said rod being disposed so that it can extend into said first chamber by the suitable displacement of said support body located thereon;
- a one-way control valve located within said support body, being operable to permit the displacement of a high viscous substance into said first chamber, defined by said support body, from said second chamber, defined by said tubular sleeve, and inhibit displacement of such a substance in an opposite direction;
- a closure member for blocking-off the inlet end of said tubular sleeve at a predetermined position thereof;
- a first displacement control means which permits initial displacement of said tubular sleeve together with said support body away from said closure member for a limited distance, so that the inlet end of said tubular sleeve is thereby displaced from said closure member, and thereafter inhibits displacement of said tubular sleeve while displacement of said support body with respect to said tubular sleeve can occur;
- and
- manually operable second displacement means for reciprocably displacing said support body with respect to said tubular sleeve and said rod.
Dependencies are inferred from the claim text.