Abstract 1,126,174. Valves. NEW YORK AIR BRAKE CO. 11 Nov., 1965 [23 Nov., 1964], No. 47965/65. Heading F2V. A combined butterfly and check valve comprises an annular body 20 having a lip 21 and an annular projection 28 disposed in a plane at an angle to the central plane of the body, the projection co-operating with a rubber bushing 29 located in a recess in the wall of the housing. The body 20 is formed with two diametrically-opposed bosses 22, 23, only the latter being shown, by means of which the body is attached to an operating spindle 25 and a stub spindle 24. The lip 21 defines an opening that is normally closed by a plate 35 pivoted at 37 to the body 20. The outer faces of the bosses are contoured to seal against the bushing 29. An annular rubber ring 41 (Fig. 4, not shown) may be provided in a groove 40 in the lip 21 to serve as a seat for the plate 35.
A VALVE FOR A FLOW LINE COMPRISING A BODY THROUGH WHICH FLUID MAY FLOW, A VANE OF SIZE TO BLOCK THE FLOW OF FLUID THROUGH SAID BODY, STUB SHAFT ATTACHED TO SAID VANE AT DIAMETRICALLY OPPOSITE LOCATIONS ANAD EXTENDING RADIALLY OF THE VANE ON THE SAME AXIS AND JORUNALED IN SAID BODY FOR MOVING SAID VANE RELATIVE TO SAID BODY UPON THE APPLICATION OF ROTATIVE FORCE TO SAID SHAFT FOR OPEN OR CLOSED POSITION THEREIN, SAID VANE HAVING A CENTRAL OPENING THERETHROUGH, A FLAPPER PIVOTED ON SAID VANE CLOSING AND OPENING BUT MOVABLE RELATIVE TO SAID VANE FROM SAID CLOSED POSITION TO OPEN POSITION UPON THE OCCURRENCE OF FLUID PRESSURE GREATER ON THE SIDE TENDING TO OPEN THE FLAPPER THAN THE OTHER SIDE OF SAID FLAPPER.
Claim 2
Dependent Claim
126 words
A VALVE FOR A FLOW LINE COMPRISING A BODY THROUGH WHICH FLUID MAY FLOW, A VANE OF SIZE TO BLOCK THE FLOW OF FLUID THROUGH SAID BODY, STUB SHAFT ATTACHED TO SAID VANE AT DIAMETRICALLY OPPOSITE LOCATIONS ANAD EXTENDING RADIALLY OF THE VANE ON THE SAME AXIS AND JORUNALED IN SAID BODY FOR MOVING SAID VANE RELATIVE TO SAID BODY UPON THE APPLICATION OF ROTATIVE FORCE TO SAID SHAFT FOR OPEN OR CLOSED POSITION THEREIN, SAID VANE HAVING A CENTRAL OPENING THERETHROUGH, A FLAPPER PIVOTED ON SAID VANE CLOSING AND OPENING BUT MOVABLE RELATIVE TO SAID VANE FROM SAID CLOSED POSITION TO OPEN POSITION UPON THE OCCURRENCE OF FLUID PRESSURE GREATER ON THE SIDE TENDING TO OPEN THE FLAPPER THAN THE OTHER SIDE OF SAID FLAPPER.