US4034882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container closures
Assignee: Rockware Group Ltd
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Filing: 1976-10-15
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Granted: 1977-07-12
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Expires: 1996-10-15
Abstract
Abstract A "childproof" container closure comprises a threaded neck member and a threaded closure cap or plug member cooperating therewith. One member bears a raised helical thread having a stop end and the other member defines two helical paths in which the helical thread may be engaged, one of which paths allows the cap or plug member to be removed from the neck member and the other having at its end a blocking member adapted to engage the stop end of the helical thread. The cap or plug can be resiliently sprung axially to move the raised helical thread from one helical path to the other.
Inventors
- 👤 Garth Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:45
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/04; B65D50/043
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
101 words
A container closure comprising a threaded neck member and a threaded closure cap member cooperating therewith, one such member bearing a raised helical thread having a stop end and the other member defining two helical paths in which the helical thread may be engaged, one of which paths allows the cap member to be removed from the neck member and the other having at its end a blocking member adapted to engage the stop end of the helical thread, and wherein the cap can be resiliently sprung axially to move the raised helical thread from one helical path to the other.
Claim 2
Dependent Claim
101 words
A container closure comprising a threaded neck member and a threaded closure cap member cooperating therewith, one such member bearing a raised helical thread having a stop end and the other member defining two helical paths in which the helical thread may be engaged, one of which paths allows the cap member to be removed from the neck member and the other having at its end a blocking member adapted to engage the stop end of the helical thread, and wherein the cap can be resiliently sprung axially to move the raised helical thread from one helical path to the other.
Claim 3
Dependent Claim
28 words
A container closure according to claim 1 wherein the neck member bears an external helical raised thread and the inside of the cap defines the two helical paths.
Claim 4
Dependent Claim
101 words
A container closure comprising a threaded neck member and a threaded closure plug member cooperating therewith, one such member bearing a raised helical thread having a stop end and the other member defining two helical paths in which the helical thread may be engaged, one of which paths allows the plug member to be removed from the neck member and the other having at its end a blocking member adapted to engage the stop end of the helical thread, and wherein the plug can be resiliently sprung axially to move the raised helical thread from one helical path to the other.
Claim 5
Dependent Claim
101 words
A container closure comprising a threaded neck member and a threaded closure plug member cooperating therewith, one such member bearing a raised helical thread having a stop end and the other member defining two helical paths in which the helical thread may be engaged, one of which paths allows the plug member to be removed from the neck member and the other having at its end a blocking member adapted to engage the stop end of the helical thread, and wherein the plug can be resiliently sprung axially to move the raised helical thread from one helical path to the other.
Claim 6
Dependent Claim
30 words
A container closure according to claim 3 wherein the container has an internally threaded neck, and the plug member has on its external surface means defining the two helical paths.
Claim 7
Dependent Claim
76 words
A container closure according to claim 1 wherein the shapes of the blocking member and the cap member are such that when the cap member is rotated on the neck member in a direction tending to unscrew the cap member and with the helical thread engaging the blocked path, the engagement of the top end of the raised helical thread with the blocking member generates substantially no axial forces tending to spring the helical thread axially.
Claim 8
Dependent Claim
77 words
A container closure according to claim 3 wherein the shapes of the blocking member and of the plug member are such that when the cap member is rotated on the neck member in a direction tending to unscrew the plug member and with the helical thread engaging the blocked path, the engagement of the stop end of the raised helical thread with the blocking member generates substantially no axial forces tending to spring the helical thread axially.
Claim 9
Dependent Claim
47 words
A container closure according to claim 1 wherein the axial force needed to spring the raised helical thread from the free path to the blocked path is considerably smaller than that required to spring it from the blocked path to the next turn of the free path.
Claim 10
Dependent Claim
47 words
A container closure according to claim 3 wherein the axial force needed to spring the raised helical thread from the free path to the blocked path is considerably smaller than that required to spring it from the blocked path to the next turn of the free path.
Claim 11
Dependent Claim
25 words
A container closure according to claim 1 wherein the helical paths are defined by helical ribs of differing heights each side of the blocked path.
Claim 12
Dependent Claim
25 words
A container closure according to claim 3 wherein the helical paths are defined by helical ribs of differing heights each side of the blocked path.
Claim 13
Dependent Claim
23 words
A container closure according to claim 1 wherein the neck member is made of rigid material and the cap of resilient plastics material.
Claim 14
Dependent Claim
23 words
A container closure according to claim 3 wherein the neck member is made of rigid material and the plug of resilient plastics material.
Claim 15
Dependent Claim
29 words
A container closure according to claim 1 and including resilient sealing means to provide a fluid-tight seal when the cap member is screwed firmly on to the neck member.
References Cited (Backward Citations)
US3741421A
Cited
US3888376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |