FIELD: engines and pumps.
SUBSTANCE: drive that can receive long-term discharge of product at one turn of product compression drive bush and prepare said product for spraying. Said assembly comprises piston driven to reciprocation by its body in cylindrical barrel provided with pump chamber. Drive bush engages via engagement disc with lead screw for reciprocation of piston body and piston at drive bush turn. Engagement disc is actuated, first for disengagement of drive bush with lead screw and for displacement of slide valve to open position at depression of product spray drive. Drive assembly can be used with different power accumulation devices such as springs, gases or other resilient materials for pressure application to sprayed product at drive turn.
EFFECT: higher operating performances.
27 cl, 97 dwg
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