| 摘要 |
<p>1,258,508. Valves; hydrostatic transmission control. EMERSON ELECTRIC CO. 15 April, 1969 [10 May, 1968], No. 15455/71. Divided out of 1,258,507. Headings F2D and F2V. A pressure responsive valve assembly for unitary installation and removal from a valve body 43 forming part of the control valve of the main application comprises a spring- biased valve element 54 axially slidable in a cylinder 47 having a removable valve seat 50. The end wall of the cylinder has a flange 48 which is drilled to receive studs 45 which secured the valve assembly to the valve body 43. The end wall has a port 62 through which control pressure is applied. Removal of the valve assemblies from the body may be facilitated by providing drilled holes in the flange 48 to receive jacking screws.</p> |
