Disconnection-preventing safety device for liquefied gas bottle valve for use with quick-coupling connector
First Claim
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1. A safety arrangement for a bottle containing liquefied gas to be dispensed, comprising:
- (a) a valve body having an inlet for mounting the body on the bottle, a discharge outlet for dispensing the liquefied gas, and a flow passage extending from the inlet to the outlet;
(b) a valve member mounted in the passage for movement from a normally-closed position in which the liquefied gas is blocked from the discharge outlet, to an open position in which the liquefied gas flows along the passage to the discharge outlet;
(c) a manually-operated knob mounted on the body for turning movement about an axis between angularly-offset, end-limiting positions;
(d) means operatively connecting the knob in a force-transmitting relationship to the valve member to move the valve member from the normally-closed position to the open position;
(e) a coupler for connection to, and disconnection from, the discharge outlet to selectively conduct the liquefied gas therefrom;
(f) alignment means for permitting said connection and disconnection of the coupler only when the valve member is in the normally-closed position; and
(g) means for locking the knob to prevent movement of the valve member to the open position upon said disconnection of the coupler, and for unlocking the knob upon said connection of the coupler.
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Accused Products
Abstract
Safety device for liquefied gas bottle valves for use with a quick-coupling connector. The device is positively controlled and activated by the same control knob as the valve. The quick-coupling connector can be disconnected only when the valve is completely closed, and vice versa the valve can be opened only when the quick-coupling connector is inserted perfectly, all of which can be effected by a single fixed-amplitude rotation of nearly 360° of the knob. This rotation causes synchronously both the activation of the internal dispensing valve member and the locking of the quick-coupling connector.
14 Citations
13 Claims
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1. A safety arrangement for a bottle containing liquefied gas to be dispensed, comprising:
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(a) a valve body having an inlet for mounting the body on the bottle, a discharge outlet for dispensing the liquefied gas, and a flow passage extending from the inlet to the outlet; (b) a valve member mounted in the passage for movement from a normally-closed position in which the liquefied gas is blocked from the discharge outlet, to an open position in which the liquefied gas flows along the passage to the discharge outlet; (c) a manually-operated knob mounted on the body for turning movement about an axis between angularly-offset, end-limiting positions; (d) means operatively connecting the knob in a force-transmitting relationship to the valve member to move the valve member from the normally-closed position to the open position; (e) a coupler for connection to, and disconnection from, the discharge outlet to selectively conduct the liquefied gas therefrom; (f) alignment means for permitting said connection and disconnection of the coupler only when the valve member is in the normally-closed position; and (g) means for locking the knob to prevent movement of the valve member to the open position upon said disconnection of the coupler, and for unlocking the knob upon said connection of the coupler. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification