CPC B60S 5/043 (2013.01) [F04B 33/005 (2013.01); F16K 15/20 (2013.01)] | 20 Claims |
1. A pump head comprising:
a housing defining an aperture about a first axis, the aperture sized and shaped to receive a valve head therein;
a moveable pin disposed within the housing coaxially with the first axis; the moveable pin defining a pin notch disposed about an exterior circumference of the moveable pin;
a pin return spring coupled to the moveable pin and coaxially with the first axis, the pin return spring biasing the moveable pin towards the aperture;
a first taper unit disposed in the housing coaxially with the first axis;
a second taper unit coupled to the pin return spring, the second taper unit disposed in the housing coaxially with the first axis and adjacent to the first taper unit, the second taper unit biased away the first taper unit; and
an elastic taper C-ring disposed between the first and second taper units,
wherein the second taper unit is moveable towards the first taper unit, thereby compressing the elastic taper C-ring circumferentially in at least one of two positions, the elastic taper C-ring compressed about the pin notch in the first position and about the valve head in the second position.
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