Diaphragm pump for needle threading

Details Diaphragm pump for needle threading Diaphragm pump for needle threading

1979-01-17

1980-01-22

Nerbun, Peter P.

Sewing

Elements

Needles

417413, D05B 8700

Patent

active

041844432

ABSTRACT:
A pump for needle threading is disclosed having a housing with a recess therein, an elastomeric diaphragm stretched across said recess forming a pump cavity in which the medium being pumped is circulated, and inlet and outlet valves. An electronically controlled linear actuator is attached to the diaphragm within the pump cavity thereby allowing compactness in the construction of the pump and improved heat dissipation from the linear actuator.

REFERENCES:
patent: 2144662 (1939-01-01), Paasche
patent: 3515966 (1970-06-01), De Valroger et al.
patent: 3599587 (1971-08-01), Greulich

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