.~ Having a thrust member with a variable volume chamber (e.g., coaxial or telescoping tubes, compensating reservoir) {7}
298
.~.~ Forming flexible wall enclosure for fluid
DEFINITION
Classification: 188/298
(under subclass 297) Device wherein either or both of said member or said container is made, at least in part, of expansible material.
(1) Note. The term "container" comprehends a chamber (e.g., cylinder, casing, etc.), as described in subclass 297, or a reservoir as described in subclass 314, or both together forming the enclosure in which fluid is moved by the thrust member.
SEE OR SEARCH CLASS
267, Spring Devices,
64.19, 64.23, 64.27 for a flexible wall or chamber for a spring device.
