| 摘要 |
<p>1,095,083. Valves. J.-L. GRATZMULLER. July 20, 1966 [July 22, 1965], No. 32670/66. Heading F2V. A relief valve, particularly for an electric battery, comprises a diaphragm 12 retained at its periphery between a casing 1 and a cover 16 and urged into contact with a seat 4 by a spring 19 acting through a plunger 18 guided in the cover. The threads joining the cover to the casing and the latter to the battery 11 are of opposite hand so that the assembly is removable as a whole by rotating the hexagonal head 22 of the cover. The chamber communicates with the battery interior via holes 8 and passages 5, 6 communicate with atmosphere. The casing, cover and plunger may be of a superpolyamide resin and the diaphragm may be of silicone. The diaphragm may also be coated with a silicone grease. The helix of spring 19 is of opposite hand to the threaded connection between the casing and cover to obviate arching of the spring. The abutment surfaces 26, 27 of the casing and cover may be coated with glue before assembly.</p> |
