Bizarre Patents
Pneumatic Shoe Lacing Apparatus
This invention provides a pneumatic shoe lacing apparatus for the pneumatic lacing of shoe.
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| Number | Title | Issue Date |
| 4173204 | Control valve of exhaust recirculation apparatus A control valve of an exhaust recirculation apparatus comprises an expansible vacuum chamber communicating with a venturi portion and having a first diaphragm and a spring urging the diaphragm to expand the chamber, an expansible exhaust pressure chamber ... | 11/06/1979 |
| 4071044 | Air monitoring valve for combustion engines A vacuum-operated, pressure-responsive valve is adapted for connection to the intake manifold of an internal combustion engine for monitoring supplemental airflow to the engine, the improvement of the present device providing precise adjustment of the sup... | 01/31/1978 |
