Patent US3513352A successfully refreshed from Google Patents.
US4364483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Child proof screw cap
Assignee: Individual
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Filing: 1981-07-10
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Granted: 1982-12-21
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Expires: 2001-07-10
Abstract
Abstract A child-proof screw-cap for containers having outer threads on the neck. The screw-cap has an inner thread which screws onto the outer thread of the neck and it is opened by an axial pressure in addition to a rotational pressure. The inside wall of the closure cap (1) has a plurality of stakes (3) extending parallel to the closure axis and joined by a common cover plate (2) actuatable from above. The stakes are guided in grooves (5) on the inside of the cap and are provided with threads 3a. Clearances (6) are provided in the outer threads and these clearances have a width greater than the stakes. At least one set of threads 3a of the stakes must be brought into mesh with the outer threads by axial pressure when the stake passes a clearance (6) and a stop is provided at the bottom of a clearance at the closed position to reverse the thrust of the axial pressure to demesh the threads and prevent turning.
Inventors
- 👤 Erich Golde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:13
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/06; B29; B29C; B29C2949/00; B29C2949/07; B29C2949/076; B29C2949/0768; B29C2949/077; B29C2949/0772; B29C2949/0773; B29C2949/0774
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
312 words
A child-proof screw-cap for such containers as bottles, pill boxes and the like, consisting of a closure cap with an inside thread screwing on an outer thread of the container neck and which can be opened only by exerting an axial pressure on, in addition to the rotational motion of the closure cap, characterized in that the inside wall of the closure cap (1) is provided with a plurality of stakes (3) distributed over its circumference and extending parallel to the closure axis (21) and joined by a common cover plate (2) which can be actuated from the upper side of the closure cap (1), said stakes (3) being displaceably guided in grooves (5) in the inside wall of the closure cap (1) and being provided on their inside with threads meshing with the inside thread (20) of the closure cap (1), the outside thread (7) at the container neck (10) being provided with clearances (6) extending parallel to the closure axis (21) and of which the given width (B) exceeds the width of the stakes (3) and of which the angular spacing corresponds to that of the stakes (3), where furthermore two indexing positions are provided for the component consisting of the stakes (3) and the cover plate (2), in the first of which the threads (3a) in the stakes (3) mesh with the threads of the inside thread (20) in the closure cap (1) while in the second indexing position they are relatively offset by about half a pitch and where the first indexing position can be brought about by axial pressure on the cover plate (2) in the direction of the container (11) and the second indexing position can be brought about by stop means (8) which at the end of the closing motion of the closure cap (1) act on the stakes (3) and/or the cover plate (2).
Claim 2
Dependent Claim
312 words
A child-proof screw-cap for such containers as bottles, pill boxes and the like, consisting of a closure cap with an inside thread screwing on an outer thread of the container neck and which can be opened only by exerting an axial pressure on, in addition to the rotational motion of the closure cap, characterized in that the inside wall of the closure cap (1) is provided with a plurality of stakes (3) distributed over its circumference and extending parallel to the closure axis (21) and joined by a common cover plate (2) which can be actuated from the upper side of the closure cap (1), said stakes (3) being displaceably guided in grooves (5) in the inside wall of the closure cap (1) and being provided on their inside with threads meshing with the inside thread (20) of the closure cap (1), the outside thread (7) at the container neck (10) being provided with clearances (6) extending parallel to the closure axis (21) and of which the given width (B) exceeds the width of the stakes (3) and of which the angular spacing corresponds to that of the stakes (3), where furthermore two indexing positions are provided for the component consisting of the stakes (3) and the cover plate (2), in the first of which the threads (3a) in the stakes (3) mesh with the threads of the inside thread (20) in the closure cap (1) while in the second indexing position they are relatively offset by about half a pitch and where the first indexing position can be brought about by axial pressure on the cover plate (2) in the direction of the container (11) and the second indexing position can be brought about by stop means (8) which at the end of the closing motion of the closure cap (1) act on the stakes (3) and/or the cover plate (2).
Claim 3
Dependent Claim
58 words
Screw-cap per claim 1, characterized in that the stop means are formed by cogs (8) mounted in the area of the clearances (6) to a peripheral flange (22) of the container neck (10) and provided with bevel surfaces (8a) extending in the direction of the closure cap (1) and acting on the free ends of the stakes (3).
Claim 4
Dependent Claim
46 words
Screw cap per claim 2, characterized in that the clearances (6) are about twice the width of the stakes (3) and in that the cogs (8) are highest in the area of the rear side of the clearances (6) as seen in the direction of closing.
Claim 5
Dependent Claim
26 words
Screw-cap per claim 2, characterized in that the side of the cogs (8) facing away from the container (11) is provided with a flat surface (8b).
Claim 6
Dependent Claim
28 words
Screw-cap per claim 2, characterized in that the free ends of the stakes (3) are provided with bevel surfaces corresponding to the bevels (8a) of the cogs (8).
Claim 7
Dependent Claim
34 words
Screw-cap per claim 1, characterized in that the cover plate (2) spans beyond an upper closure plate (24) of the closure cap (1) and is provided with passageways (4) for passing the stakes (3).
Claim 8
Dependent Claim
73 words
Screw-cap per claim 1, characterized in that the stop means are formed by bevels (34) at the beginning of the particular first upper thread (7a) at the container neck (10) on the rear side--as seen in the direction of closing--of the clearances (6) which are associated with a cog (36) mounted to the stakes (3) and provided with a corresponding bevel surface (35) and spanning beyond the width of the particular stake (3).
Claim 9
Dependent Claim
33 words
Screw-cap per claim 7, characterized in that the bevel surfaces (8a) of the cogs (8) or of the upper first thread (7a) subtend an angle of about 60° with the closure axis (21).
Claim 10
Dependent Claim
83 words
Screw-cap per claim 1, characterized in that slits (13) are provided in the outside wall of the closure cap (1) in the area of the stakes (3) for the purpose of forming elastic tongues (16) which comprise two projections or recesses (14,15) toward the stakes (3) and are placed one over the other at a spacing of about half a pitch and which engage corresponding projections or recesses (14,15) of the stakes (3) for the purpose of bringing about the two indexing positions.
Claim 11
Dependent Claim
84 words
Screw-cap per claim 8, characterized in that the upper side of the closure cap (1) is provided with an upwardly directed, hollow cylindrical rim (1a) engaged by the cover plate (2), the inside of the hollow cylindrical rim (1a) of the closure cap (1) being provided with projections or recesses (14,15) arranged at a spacing of half a pitch and engaging corresponding projections or recesses (14,15) at the rim of the cover plate (2) for the purpose of bringing about the two indexing positions.
Claim 12
Dependent Claim
80 words
Screw-cap per claim 8, characterized in that the upper closure plate (24) of the closure cap is provided with a central, pot-shaped recess (32) engaged by indexing tongues (33) at the cover plate (2), the inside wall of the pot-shaped recess (32) comprising projections or recesses (14,15) arranged at a spacing of half a pitch and engaging corresponding projections or recesses (14,15) on the outside of the indexing tongues (33) for the purpose of bringing about the two indexing positions.
Claim 13
Dependent Claim
15 words
Screw-cap per claim 11, characterized in that four circularly arrayed indexing tongues (33) are provided.
Claim 14
Dependent Claim
19 words
Screw-cap per claim 1, characterized in that two mutually opposite stakes (3) are provided at the cover plate (2).
Claim 15
Dependent Claim
20 words
Screw-cap per claim 13, characterized in that the threads in the closure cap (1) and the stakes (3) are double-threads.
Claim 16
Dependent Claim
62 words
Screw-cap per claim 1, characterized in that the parts of the screw-cap consist of an injection-moldable thermoplastic and in that the closure cap (1) on one hand and the cover plate (2) with the stakes (3) on the other hand are combined into a single injection-molded article by joining the two parts together by their upper sides when in the injection-molding state.
Claim 17
Dependent Claim
43 words
Screw-cap per claim 1, characterized in that the upper closure plate (24) of the closure cap (1) comprises a hollow sealing cone (23) directed toward the container (11) and which in the closed state engages the container neck (10) in a sealing manner.
Claim 18
Dependent Claim
23 words
Screw-cap per claim 16, characterized in that the sealing cone (23) forms the end of a hollow cylinder (31) engaging the container neck.
Claim 19
Dependent Claim
34 words
Screw-cap per claim 1, characterized in that an elastic seal is mounted between the inside of the upper closure plate (24) of the closure cap (1) and the rim of the container neck (10).
Claim 20
Dependent Claim
29 words
Screw-cap per claim 1, characterized in that the stakes (3) and the grooves (5) evince a dovetailed cross-section, with the wider side of the dovetail being on the outside.
Claim 21
Dependent Claim
24 words
Screw-cap per claim 19, characterized in that the dovetailed cross-section is designed in curved manner corresponding to the diameter of the closure cap (1).
Claim 22
Dependent Claim
64 words
Screw-cap per claim 1, characterized in that in each case the stakes (3) form one component with the outside casing of the closure cap (1), and the inside thread (20) with the cover plate (2) form one component, where the outside casing with the stakes can be acted on by the stop means (8) on one hand and the actuation pressure on the other.
References Cited (Backward Citations)
US3526332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |