US3712646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick coupling device for lpg containers
Assignee: Shell USA Inc
•
Filing: 1970-12-21
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Granted: 1973-01-23
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Expires: 1990-12-21
Abstract
Abstract A coupling device for mounting appliances such as camp stoves gas lamps on compressed gas containers of the type having an opening surrounded by a circular projecting fold. The device comprises a hollow member equipped at one end with a number of fingers, and a sleeve, which may be displaced vertically along this hollow member. This sleeve in its lower position presses the fingers against the fold and is blocked in this lower position either by means of two semi-circular springs which co-operate with a special shaped slit in the sleeve or by means of special fingers which block the sleeve.
Inventors
- 👤 J Bergougnoux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:46
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/133; C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/16; C07H19/20; F17; F17C; F17C13/00; F17C13/002; F17C13/04; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2270/00; F17C2270/07; F17C2270/0718
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
215 words
A coupling device for mounting an appliance on a compressed gas container of the type having an opening surrounded by a circular projecting fold which comprises: a hollow base member having a top part adapted to be coupled to the appliance; a sleeve slidably mounted on the base member; a plurality of elastic fingers carried by the base member at the bottom end thereof and spaced around the periphery of the base member at regular intervals, the elastic fingers being biased to a normally open position in which the fingers can be fitted over the circular projecting fold; tightening means comprising at least one flexible ring at least partially surrounding the elastic fingers and a tightening inclined face provided on the sleeve, said elastic finger having a slot for receiving said flexible ring, said ring having at least one extremity which cooperates with said tightening inclined face whereby when the sleeve is disPlaced longitudinally along the base member toward a tightened position, the extremity of the ring slides along the tightening inclined face causing the ring to move inward with respect to the base member thereby moving the elastic fingers radially inward into engagement with the circular projecting fold; and locking means operatively connected to the sleeve for locking the sleeve in the tightened position.
Claim 2
Dependent Claim
215 words
A coupling device for mounting an appliance on a compressed gas container of the type having an opening surrounded by a circular projecting fold which comprises: a hollow base member having a top part adapted to be coupled to the appliance; a sleeve slidably mounted on the base member; a plurality of elastic fingers carried by the base member at the bottom end thereof and spaced around the periphery of the base member at regular intervals, the elastic fingers being biased to a normally open position in which the fingers can be fitted over the circular projecting fold; tightening means comprising at least one flexible ring at least partially surrounding the elastic fingers and a tightening inclined face provided on the sleeve, said elastic finger having a slot for receiving said flexible ring, said ring having at least one extremity which cooperates with said tightening inclined face whereby when the sleeve is disPlaced longitudinally along the base member toward a tightened position, the extremity of the ring slides along the tightening inclined face causing the ring to move inward with respect to the base member thereby moving the elastic fingers radially inward into engagement with the circular projecting fold; and locking means operatively connected to the sleeve for locking the sleeve in the tightened position.
Claim 3
Dependent Claim
38 words
The coupling device of Claim 1 wherein the base member comprises a cylindrical part at the end which carries the elastic fingers for co-operating with a cylindrical hollow space of the container internal of the circular projecting fold.
Claim 4
Dependent Claim
41 words
The coupling device of Claim 2 wherein the cylindrical part comprises a circular shoulder for co-operatively engaging the top part of the circular projecting fold when the sleeve is in the tightened position to prevent downward movement of the base member.
Claim 5
Dependent Claim
101 words
The coupling device of claim 1 wherein the locking means comprise a locking inclined face provided on the sleeve and having an incline inverse to that of the tightening inclined face, said locking inclined face intersecting the tightening inclined face at a position such that when the sleeve is displaced longitudinally along the base member toward the tightened position the extremity of the ring slides along the tightening inclined face to the point of intersection of the tightening inclined face with the locking inclined face and then slides along the locking inclined face to lock the sleeve in the tightened position.
Claim 6
Dependent Claim
37 words
The coupling device of claim 1 including a central push-element carried at the bottom end of the coupling device for opening the push valve in the gas container when the coupling device is mounted on the container.
References Cited (Backward Citations)
FR342467A
Cited
GB426938A
Cited
US2070013A
Cited
US2754135A
Cited
US2860820A
Cited
US2784987A
Cited
FR1310713A
Cited
GB1104697A
Cited
US3454047A
Cited
US3394950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |