| 摘要 |
<p>The invention described is a valve assembly adapted for use in an animal feeding teat and an animal feeding teat in combination with the above valve assembly. The valve assembly comprises: a piston shaft (10) with a piston head (12), a valve head (14) attached to the piston shaft (10) at the end of the shaft opposite the piston head (12), and biasing means (16) co-operable with said piston head (12), so that in use in an animal feeding teat said valve head (14) is seated to cover a first aperture (22) in said teat (17) and pressure on said piston head (12) against said biasing means (16) will unseat said valve head (14) and open said aperture (22). The invention described extends to a combination of the above valve assembly together with an animal feeding teat.</p> |
