Air flow control system and improved multiple position switching means for use therewith
AssigneePace Incorporated
InventorKenneth Curtis Litt
Life of this patent
Estimating the term…
Abstract
Air flow control system comprising a pump having an air pressure outlet and a vacuum outlet; an air utilization device such as a desolderer; and a multi-position switch having first and second input ports respectively connected to the air pressure and vacuum outlets of the pump, the switch being positionable in a number of different positions whereby either one of the pump outlets can be selectively connected to the desolderer and the other vented to the atmosphere to prevent loading of the pump. In a neutral mode of operation, the desolderer is disconnected from the pump and both pump outlets are vented to the atmosphere to again prevent loading thereof. The switch also includes means for continuously varying the amount of air pressure applied to the desolderer.
Claims10
An air flow control system comprising
- an air pump having a vacuum outlet port and an air pressure outlet port;
- an air utilization device;
- a switch comprising
- a switch outlet port connected to said air utilization device;
- a vent port;
- a vacuum inlet port connected to said air pump vacuum outlet port;
- an air pressure inlet port connected to said air pump air pressure outlet port;
- and
- valve means for (a) connecting said vacuum inlet port to said switch outlet port and said air pressure inlet port to said vent port in response to said switch being in a first position and (b) connecting said air pressure inlet port to said switch outlet port and said vacuum inlet port to said vent port in response to said switch being in a second position
- whereby either vacuum or air pressure may be switched from said air pump to said air utilization device without loading the pump.
An air flow control switch for use with an air pump having a vacuum outlet port and an air pressure outlet port, said switch comprising
- a switch outlet port;
- a vent port;
- a vacuum inlet port adapted for connection to said air pump vacuum outlet port;
- an air pressure inlet port adapted for connection to said air pump air pressure outlet port;
- and
- valve means for (a) connecting said vacuum inlet port to said switch outlet port and said air pressure inlet port to said vent port in response to said switch being in a first position and (b) connecting said air pressure inlet port to said switch outlet port and said vacuum inlet port to said vent port in response to said switch being in a second position so that either vacuum or air pressure may be switched from said air pump to said switch outlet port without loading the air pump.
Dependencies are inferred from the claim text.