Biasing unit for dispensing pump
French April 1, 1
U.S. patent number T993,004 [Application Number 06/047,403] was granted by the patent office on 1980-04-01 for biasing unit for dispensing pump. Invention is credited to Floyd R. French.
| United States Patent | T993,004 |
| French | April 1, 1980 |
Biasing unit for dispensing pump
Abstract
An elastomeric biasing unit for a manually operated dispensing pump of the type including a hollow, stationary piston and reciprocable piston cylinder coaxially disposed about the piston and cooperating therewith to define a variable volume pump chamber. The biasing unit, which urges the piston cylinder outward to a position of maximum pump chamber volume, has an open end in operative association with the piston cylinder and a generally closed end, providing a component of the inlet check valve, in operative association with the piston.
| Inventors: | French; Floyd R. (Manchester, MO) |
|---|---|
| Family ID: | 21948766 |
| Appl. No.: | 06/047,403 |
| Filed: | June 11, 1979 |
| Current U.S. Class: | 222/321.8; 222/336 |
| Current CPC Class: | B05B 11/3004 (20130101); B05B 11/3009 (20130101); B05B 11/3015 (20130101); B05B 11/3076 (20130101); B05B 11/3077 (20130101) |
| Current International Class: | B05B 11/00 (20060101); B05B 011/00 () |
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