Pump, pump and holder assembly, personal-care appliance, and method of assembling a pump
AssigneeU.S. Philips Corporation
InventorsWillem A. Westerhof, Lambertus J. Pezij
Life of this patent
Estimating the term…
Abstract
A pump is assembled, starting from a basic part having an inlet channel and an outlet channel, which terminate in a wall portion, by successively stacking a valve foil provided with an inlet valve and an outlet valve onto the wall portion, stacking an intermediate part having an inlet opening and an outlet opening onto the stack comprising the basic part and the valve foil, stacking an end part of a flexible material onto the stack comprising the basic part, the valve foil and the intermediate part, and securing the end part to the basic part. The pump is particularly suited for use in a personal body care appliance such as an electric shaver, depilating device or body massage device.
Claims15
A pump (20;
- 120) suitable for dispensing a fluid in a personal care appliance, comprising
- a pump chamber (21) bounded by a movable wall (81),
- an inlet channel (51) and an outlet channel (52), which channels are connected to the pump chamber,
- an inlet valve (61) for closing the inlet channel, and
- an outlet valve (62) for closing the outlet channel, characterized in that
- the pump comprises a basic part (50) having a wall portion (55) in which the inlet channel (51) and the outlet channel (52) terminate,
- the inlet valve (61) and the outlet valve (62) form parts of a valve foil (60) clamped between the wall portion and an intermediate part (70),
- the intermediate part (70) has an inlet opening (71) and an outlet opening (72) which correspond to the inlet channel (51) and the outlet channel (52), and
- the movable wall (81) belongs to an end part (80) which is supported on the intermediate part (70).
A method of assembling a pump (20;
- 120), starting from a basic part (50) having an inlet channel (51) and an outlet channel (52), which terminate in a wall portion (55) of the basic part, which method comprises
- the stacking of a valve foil (60) onto the wall portion,
- the stacking of an intermediate part (70) having an inlet opening (71) and an outlet opening (72) onto the stack comprising the basic part (50) and the valve foil (60),
- the stacking of an end part (80) of a flexible material onto the stack comprising the basic part, the valve foil and the intermediate part, and
- the securing of the end part (80) to the basic part (50).
Dependencies are inferred from the claim text.