(under the class definition) Devices having an imperforate member functioning as a seal for an aperture in a partition or for a passageway, the member being flexible at least in part to permit movement with respect to the partition and being fixed to the partition or walls of the passageway, there being means contacting one side of the seal member to receive or transfer motion from or to the member, and there
being relative motion between the seal member and the means at the point of contact.
(1) Note. The seal member may include bearing surfaces or the like to minimize the effect of the relative motion on the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18+, for flexible seals pierced by a rod, which seal is fixed to its support and to the rod.
SEE OR SEARCH CLASS
313, Electric Lamp and Discharge Devices, 148, for electric lamp and discharge devices provided with means to transmit motion to an electrode through a movable envelope wall portion.
