US3874568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Child resistant closure with cam mechanism
Assignee: Silgan Dispensing Systems Slatersville LLC
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Filing: 1973-11-16
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Granted: 1975-04-01
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Expires: 1993-11-16
Abstract
Abstract A child resistant dispensing closure having a cap which is adapted to be secured to a container and which has an opening extending therethrough and also having a spout rotatably mounted on the cap so as to be capable of being rotated between a closed and an open position relative to the opening of the cap can be constructed using a cam movably mounted on the cap. Preferably the cap has an internal groove into which the spout fits when it is in the closed position and preferably the cam is a second order lever having a cam surface rotatably mounted on the cap so as to be adjacent to the end of the spout when the spout is in the closed position. With this structure a part of the spout serving as a cam follower is engaged by the cam surface during the movement of the cam so as to rotate the spout to a position in which the spout may be separately engaged to be rotated to an open position.
Inventors
- 👤 Vange Donald H La
- 👤 Robert E Hazard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:55
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/20; B65D47/30; B65D47/305; B65D55/00; B65D55/02; B65D2215/00; B65D2215/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
164 words
In a dispensing closure having a cap which is adapted to be secured to a container and which has an opening extending therethrough and also having a spout rotatably mounted on the cap so as to be capable of being rotated between a closed position in which the spout seals off the opening and an opened position in which the spout is in alignment with the opening, the improvement which comprises: a cam means movably mounted on said cap so as to be capable of being moved relative to said spout when said spout is in said closed position, a cam follower means located on said spout so as to be engaged by said cam means when said spout is in said closed position, said cam means being shaped so that when it is moved as said sPout is in said closed position said cam follower means will be engaged by said cam means so as to rotate said spout from said closed position.
Claim 2
Dependent Claim
164 words
In a dispensing closure having a cap which is adapted to be secured to a container and which has an opening extending therethrough and also having a spout rotatably mounted on the cap so as to be capable of being rotated between a closed position in which the spout seals off the opening and an opened position in which the spout is in alignment with the opening, the improvement which comprises: a cam means movably mounted on said cap so as to be capable of being moved relative to said spout when said spout is in said closed position, a cam follower means located on said spout so as to be engaged by said cam means when said spout is in said closed position, said cam means being shaped so that when it is moved as said sPout is in said closed position said cam follower means will be engaged by said cam means so as to rotate said spout from said closed position.
Claim 3
Dependent Claim
31 words
A dispensing closure as claimed in claim 1 wherein: said cam means is a second order lever having a cam surface adapted to engage said spout movably mounted on said cap.
Claim 4
Dependent Claim
27 words
A dispensing closure as claimed in claim 2 wherein: said cam means is integral with said cap and is connected to said cap by a flexible web.
Claim 5
Dependent Claim
82 words
A dispensing closure as claimed in claim 1 wherein: said cap has a top formed with a groove therein, said spout fits entirely within said groove when said spout is in said closed position, said cam means is positioned so as to engage an end of said spout so as to rotate said spout from said closed position so that said spout projects partially out of said groove when said cam means is actuated with said spout being in said closed position.
Claim 6
Dependent Claim
122 words
A dispensing closure as claimed in claim 1 wherein: said cap has a top formed with a groove therein, said spout fits entirely within said groove when said spout is in said closed position, said cam means is positioned so as to engage an end of said spout so as to rotate said spout from said closed position so that said spout projects partially out of said groove when said cam means is actuated with said spout being in said closed position, said cam means is a second order lever having a cam suface adapted to engage said spout movably mounted on said cap, said cam means is integral with said cap and is connected to said cap by a flexible web.
Claim 7
Dependent Claim
214 words
A dispensing closure as claimed in claim 1 wherein: said cap has a top formed with a groove therein, said spout is mounted on said cap so as to fit entirely within said groove when said spout is in said closed position, said cap includes a skirt which is dependent from said top, said groove extends from the center of said top to said skirt, said cam means is integral with said cap and is connected to said cap by a flexible web which extends upwardly from the bottom of said groove adjacent to said skirt, said cap and said cam means include cooperating retainer means holding said cam means within said groove adjacent to said skirt so that said cam means is capable of being rotated about said web means, said spout includes an extension and a cam follower means is located on said extension, said cam follower means engaging said cam means when said spout is in said closed position and being capable of transmitting motion to said spout so as to rotate said spout so that it extends above said top to a sufficient extent so that it can be manually engaged to be rotated to an open position by movement of said cam means towards said spout within said groove.
Claim 8
Dependent Claim
42 words
A dispensisng closure as claimed in claim 6 including: detent means on said spout and in said groove for holding said spout within said groove in said closed position against movement of said spout caused by inadvertent movement of said cam means.
Claim 9
Dependent Claim
198 words
A dispensing closure having a cap with an opening extending therethrough and means for securing said cap to a container located around said opening and having a spout rotatably mounted thereon so as to be capable of being rotated between an opened position in which said spout is in alignment with said opening and a closed position in which said spout seals off said opening in which the improvement comprises: said spout being located on said cap so as to be normally incapable of being manually engaged so as to be rotated from said closed position to said open position, a cam means movably mounted on said cap so as to be capable of being moved relative to said spout when said spout is in said closed position, said cam means having a cam surface thereon which engages said spout when said spout is in said closed position and when said cam means is moved towards said spout so as to rotate said spout so that said spout is moved from said closed positin to project from said cap to a sufficient extent that it can be manually engaged so as to be rotated to said open position.
Claim 10
Dependent Claim
198 words
A dispensing closure having a cap with an opening extending therethrough and means for securing said cap to a container located around said opening and having a spout rotatably mounted thereon so as to be capable of being rotated between an opened position in which said spout is in alignment with said opening and a closed position in which said spout seals off said opening in which the improvement comprises: said spout being located on said cap so as to be normally incapable of being manually engaged so as to be rotated from said closed position to said open position, a cam means movably mounted on said cap so as to be capable of being moved relative to said spout when said spout is in said closed position, said cam means having a cam surface thereon which engages said spout when said spout is in said closed position and when said cam means is moved towards said spout so as to rotate said spout so that said spout is moved from said closed positin to project from said cap to a sufficient extent that it can be manually engaged so as to be rotated to said open position.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |