Abstract: The present invention relates to a heating element usable in particular in aquaria, characterized in that it is constituted by an electrical element proper, coated with a moldable and waterproof heat-conducting material, such as a resin preferably, which can be shaped by known methods.
Abstract: A sprocket shift assembly wherein sprockets of different diameters are arranged as a cluster on a common shaft and are coupled with a chain between driving and driven members. The chain is movable as the sprockets rotate from one of the sprockets to another by realignment of portions of the sprocket such that the chain is at all times in a positive driving relationship with the cluster.
Type:
Grant
Filed:
August 6, 1976
Date of Patent:
November 28, 1978
Assignees:
David L. Browning, Marc S. Browning, Christopher M. Browning, John B. Browning, Gloria S. Browning, Michael C. Browning, Paul C. Browning