Animal husbandry – Milkers – With signals – indicators – registers – and timers
Patent
1990-10-05
1992-01-07
Hirsch, Paul J.
Animal husbandry
Milkers
With signals, indicators, registers, and timers
119174, A01K 1500
Patent
active
050780948
ABSTRACT:
An elevator toy for small animals (hamsters, gerbils, mice, or other small animals) in transparent plastic and comprising an animal-operated and automatically resetting elevator embodied in a counterbalanced and reciprocating double-car assembly wherein downward transport in one car automatically resets the other car and eliminates shearing action during animal exit. The cars are connected by ball chain suspended over guide pulleys in a containment structure with two additional means of control. First, there is an animal released or weight-sensitive retaining means to hold the car in position, preferably a non-toxic ceramic ring magnet, which comes into contact with a metallic component on the top of the car. Second, there is a cushioning means, preferably a compression spring, with the ring magnet attached in concentric fashion to the lower end of the spring, and the spring itself attached to the underside of a pulley guard housing on the lid of the containment structure. The ball chain connecting the counterbalanced elevator cars passes upward through the center of each magnet and spring and then through a tiny hole in the guard housing and over the guide pulleys, so that all forces are centered on each car. The containment structure allows food to be dropped into each elevator car to motivate the animals, and also employs one-way passage means to encourage proper use of the toy and increase its complexity and entertainment value. The elevator cars are removed from their shafts with the removal of the containment structure lid for easy access and cleaning, which may also allow removal of an auxiliary staircase, further comprising a plurality of stations connected by apertures in an alternating or rotational sequence which is vertically offset in an incremental and progressive manner. There are numerous safety features. A bell is optional, and the toy may be used in combination with a cage, tube, ladder, or particularly, a spiral staircase.
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