Claims
- 1. A gun for repeatedly dispensing precisely metered quantities of liquid from a pressurized source, comprising, in combination:
- (a) a hollow body having has a substantially horizontal portion;
- (b) said horizontal body portion having a valve chamber with inlet and outlet ports at opposite ends thereof;
- (c) means defining a metering chamber disposed in depending relation to said horizontal body portion so that said horizontal body portion and metering chamber defining means form a substantially T-configuration;
- (d) said body having a passage communicating between said valve and metering chamber;
- (e) a handle coupled to said horizontal body portion and extending in depending relation thereto;
- (f) an actuating trigger pivotably mounted adjacent said handle for movement between first and second positions,
- (g) said body having a pressurized liquid inlet passage located between s aid handle and valve chamber inlet port and communicating with said inlet port;
- (h) an axially slidable valve spool in said valve chamber;
- (i) first and second blocking means disposed on said spool for regulating the flow of liquid through said valve chamber inlet and outlet ports;
- (j) lost-motion means for permitting relative motion of said first and second blocking means in response to movement of said valve spool;
- (k) resilient biasing means for normally urging said valve spool in a direction that causes said first blocking means to engage said outlet ports while said second blocking means is maintained in disengaged relation to said inlet port for permitting the flow of pressurized liquid into said metering chamber; and
- (l) means responsive to pivotable movement of said axially moving said spool so as to cause said second blocking means to close said inlet port while said outlet port is closed by said first blocking means thereby isolating a metered quantity of liquid in said metering chamber, and then to move said first blocking means away from said outlet port so as to permit the discharge of said meter quantity of liquid from said metering chamber through said outlet port.
- 2. The combination set forth in claim 1 including second resilient biasing means interposed between said first and second blocking means.
- 3. The combination set forth in claim 1 in which said body has a T-shaped configuration with a lower portion depending from said horizontal portion.
- 4. The combination set forth in claim 1 including cup means mounted on said lower body portion for defining said metering chamber.
- 5. The combination set forth in claim 4 in which said cup means is adjustable for permitting selective adjustment in the amount of metered liquid to be dispensed.
Parent Case Info
This a continuation-in-part application of copending U.S. patent application Ser. No. 596,654, filed Apr. 4, 1984, now U.S. Pat. No. 4,650,099.
US Referenced Citations (15)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2149544 |
Apr 1973 |
DEX |
15701 |
Jan 1910 |
GBX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
594654 |
Apr 1984 |
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