Pump head and metering device
AssigneeF. Holzer GmbH
InventorsHyek Hee Lee, Ute Steinfeld, Markus Mahler, Frank Holzer
Life of this patent
Estimating the term…
Abstract
Disclosed is a pump head with a specially configured elastic valve which enables secure closure of the pump head. It is ensured by the valve that complete emptying and, at the same time, secure closing of the pump head is ensured so that no residues of fluid to be metered remain in the storage state of the pump head. In addition, the present invention relates to a metering device which can be configured for example as squeeze bottle, as non-airless system or as airless system, the metering device comprising a pump head according to the invention.
Claims25
A pump head for a metering device for metered dispensing of a fluid, comprising:
- a head part with an outlet opening for the fluid to be dispensed, the head part having an inner surface,
- an elastic valve which has at least in regions a geometric configuration corresponding to the inner surface of the head part,
- a liner which has a through-opening for the fluid to be dispensed, via which an inflow of the fluid between the head part and the elastic valve is enabled with deformation of the elastic valve and with formation of an intermediate space between the elastic valve and the head part in an actuation state,
- wherein the head part and the liner are connected in a frictional fit, with inclusion of the elastic valve between the head part and the liner, and
- the elastic valve, in a storage state of the pump head, is situated over an entire surface in a form-fit on the inner surface of the head part so that a fluidic seal between the head part and the liner is ensured.
A Metering device, comprising:
- A pump head for metered dispensing of a fluid connected to a storage vessel, the pump head comprising:
- a head part with an outlet opening for the fluid to be dispensed, the head part having an inner surface;
- an elastic valve which has at least in regions a geometric configuration corresponding to the inner surface of the head part;
- a liner which has a through-opening for the fluid to be dispensed, via which an inflow of the fluid between the head part and the elastic valve is enabled with deformation of the elastic valve and with formation of an intermediate space between the elastic valve and the head part in an actuation state;
- wherein the head part and the liner are connected in a frictional fit, with inclusion of the elastic valve between the head part and the liner;
- and
- the elastic valve, in a storage state of the pump head, is situated over an entire surface in a form-fit on the inner surface of the head part so that a fluidic seal between the head part and the liner is ensured.
Dependencies are inferred from the claim text.