HYDRAULIC PUMP WITH MANUAL DRIVE Russian patent published in 2007 - IPC F04B9/14 

FIELD: equipment used in emergency-rescue tools, in particular, in pumps with manual drive for delivery of working fluid into working cavities of these tools and for discharge of working fluid from discharge cavity of these tools.

SUBSTANCE: pump has casing formed as shaped bushing secured through bracket with rocker formed as handle with arm. Tank and tank body are axially aligned with pump casing axis and are secured with one another through pin and nut. Pump casing and tank body are fixed to supporting plate incorporating first-stage pressure valve and second-stage suction valve, filter and control valve. First-stage valve function is combined with second-stage suction valve function. First-stage suction and pressure valves and second-stage suction valve, as well as second-stage pressure valve are axially aligned within pump casing opening. First-stage and second-stage pressure valves and second-stage suction valve are formed as flat spring-loaded valves whose seats are set with their outer spherical surfaces within pump casing so as to be dismantled and are pressed by connection pipes. Function of valve is combined with operation of safety valve. Control valve positioned within pump is made in the form of spring-loaded flat valve and lever for regulating of loading upon valve through pusher. Breather plug located within tank is made in the form of plug with spring-loaded valve fitted therein.

EFFECT: simplified construction, reduced weight and decreased labor intensity for manufacture of pump.