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US 10,113,541 B2Granted
Valves and pumps using said valves
AssigneeSilgan Dispensing Systems Netherlands B.V.
InventorsEelco Han De Man, Stefan Koster
Life of this patent
Estimating the term…
Abstract
Improved, rigid valves for pumps include ribs or other support structures, increased diameters and cross-sectional areas, and conically shaped outlet valves.
Claims13
A valve for a pump, comprising:
- a valve stem;
- an outlet valve at a first end of the valve stem;
- a valve disc at a second end of the valve stem, the valve disc having a substantially flexible semispherical shape configured to collapse;
- and
- at least one longitudinal rib running a portion of the length of the valve stem between the outlet valve and the valve disc,
- wherein proximate the second end, the at least one longitudinal rib tapers inward towards the valve stem as the rib extends in a direction from the first end towards the second end.
3 more elements
A valve for a pump, comprising:
- a valve stem;
- an outlet valve at a first end of the valve stem;
- and
- a valve disc at a second end of the valve stem, the valve disc having a substantially flexible semispherical shape configured to collapse;
- wherein the valve stem has a diameter equal to the largest diameter of the outlet valve extending from the outlet valve towards the valve disc and a narrowing portion adjacent the valve disc, and
- wherein the narrowing portion converges in diameter as the valve stem approaches the valve disc.
3 more elements
A pump, comprising:
- a base;
- a bellow seated in the base;
- a cap securing the bellow in the base;
- a valve in an interior portion of the base;
- and
- an attachment adapter securing the valve in the base;
- and wherein the valve comprises:
- a valve stem;
- an outlet valve at a first end of the valve stem seated against a discharge passage in the base;
- and
- a valve disc at a second end of the valve stem and seated against the attachment adapter, the valve disc having a substantially flexible semispherical shape configured to collapse to unseat the outlet valve;
- wherein the valve stem has a diameter equal to the largest diameter of the outlet valve extending from the outlet valve towards the valve disc and a narrowing portion adjacent the valve disc tapering inward from the largest diameter towards the valve disc.
9 more elements
Dependencies are inferred from the claim text.