US3734332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety closure
Assignee: Individual
•
Filing: 1971-12-01
•
Granted: 1973-05-22
•
Expires: 1991-12-01
Abstract
Abstract A dual thread neck and cap safety closure for a container to prevent opening of the container by children yet facilitate opening the container by adults. The neck has at least two spaced apart threads, one clockwise and one counterclockwise. The cap has a corresponding clockwise thread and a corresponding counterclockwise thread.
Inventors
- 👤 N Grulich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:35
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/06; B65D50/063; B29; B29C; B29C2949/00; B29C2949/07; B29C2949/076; B29C2949/0768; B29C2949/077; B29C2949/0772; B29C2949/0773; B29C2949/0774
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
179 words
A safety closure for a container having a neck and a mating cap comprising: a first screw thread on the outer surface of the neck, said first thread having a first rotational direction, a second screw thread on the outer surface of the neck positioned above and spaced from said first thread, said first and second screw threads having opposite rotational directions, a third screw thread on the inner surface of the cap, said third screw thread having a rotational direction permitting said third screw thread to be threaded onto said first screw thread, a fourth screw thread on the inner surface of said cap and positioned above said third screw thread, said fourth screw thread having a rotational direction permitting it to be threaded onto said second screw thread, said first and second screw threads on the neck being axially spaced apart by a distance at least equal to the axial length of the combination of said third and fourth screw threads on said cap, and means to permit said third thread to axially pass said second thread.
Claim 2
Dependent Claim
179 words
A safety closure for a container having a neck and a mating cap comprising: a first screw thread on the outer surface of the neck, said first thread having a first rotational direction, a second screw thread on the outer surface of the neck positioned above and spaced from said first thread, said first and second screw threads having opposite rotational directions, a third screw thread on the inner surface of the cap, said third screw thread having a rotational direction permitting said third screw thread to be threaded onto said first screw thread, a fourth screw thread on the inner surface of said cap and positioned above said third screw thread, said fourth screw thread having a rotational direction permitting it to be threaded onto said second screw thread, said first and second screw threads on the neck being axially spaced apart by a distance at least equal to the axial length of the combination of said third and fourth screw threads on said cap, and means to permit said third thread to axially pass said second thread.
Claim 3
Dependent Claim
35 words
The closure of claim 1 wherein: the peak diameter of said second thread is less than the peak diameter of said third thread so that said third thread can pass axially over said second thread.
Claim 4
Dependent Claim
189 words
A safety closure for a container having a neck and mating cap to inhibit opening by children comprising: a first screw thread on the outer surface of the neck, a second screw thread on the outer surface of the neck, the rotational directions of said first and second screw threads being opposite to one another, a third screw thread on the inner surface of said cap, a fourth screw thread on the inner surface of said cap, said third and fourth screw threads having rotational directions opposite to one another, said first screw thread being lower on the neck than said second screw thread and said third screw thread being lower on the cap than said fourth screw thread, said third screw thread being adapted to engage said first screw thread and said fourth screw thread being adapted to thread onto said second screw thread, said first and second threads being axially spaced apart on said neck by a distance at least equal to the axial length of said third and fourth threads as a unit, and means to permit said third thread to axially pass said second thread.
Claim 5
Dependent Claim
189 words
A safety closure for a container having a neck and mating cap to inhibit opening by children comprising: a first screw thread on the outer surface of the neck, a second screw thread on the outer surface of the neck, the rotational directions of said first and second screw threads being opposite to one another, a third screw thread on the inner surface of said cap, a fourth screw thread on the inner surface of said cap, said third and fourth screw threads having rotational directions opposite to one another, said first screw thread being lower on the neck than said second screw thread and said third screw thread being lower on the cap than said fourth screw thread, said third screw thread being adapted to engage said first screw thread and said fourth screw thread being adapted to thread onto said second screw thread, said first and second threads being axially spaced apart on said neck by a distance at least equal to the axial length of said third and fourth threads as a unit, and means to permit said third thread to axially pass said second thread.
Claim 6
Dependent Claim
35 words
The closure of claim 3, wherein: the peak diameter of said second thread is less then the peak diameter of said third thread so that said third thread can pass axially over said second thread.
Claim 7
Dependent Claim
112 words
A container having a neck adapted to be closed by a cap to provide a safety closure to inhibit opening by children comprising: a lower screw thread on the outer surface of said neck having a first rotational direction, and an upper screw thread on the outer surface of said neck having a second rotational direction, said first and said second rotational directions being opposite to one another, said upper and lower screw threads on said neck being axially spaced from one another by a distance sufficient to accommodate mating cap screw threads, tHe peak diameter of said upper screw thread being less than the root diameter of said lower screw thread.
Claim 8
Dependent Claim
112 words
A container having a neck adapted to be closed by a cap to provide a safety closure to inhibit opening by children comprising: a lower screw thread on the outer surface of said neck having a first rotational direction, and an upper screw thread on the outer surface of said neck having a second rotational direction, said first and said second rotational directions being opposite to one another, said upper and lower screw threads on said neck being axially spaced from one another by a distance sufficient to accommodate mating cap screw threads, tHe peak diameter of said upper screw thread being less than the root diameter of said lower screw thread.
Claim 9
Dependent Claim
96 words
A safety closure cap for a container having a neck to provide in combination with the container a closure that inhibits opening by children comprising: an upper screw thread on the inner surface of said cap, and a lower screw thread on the inner surface of said cap axially positioned closer to the rim of the cap than said upper screw thread, the rotational directions of said upper and lower screw threads being opposite to one another, the peak diameter of said lower screw thread being greater than the root diameter of said upper screw thread.
Claim 10
Dependent Claim
96 words
A safety closure cap for a container having a neck to provide in combination with the container a closure that inhibits opening by children comprising: an upper screw thread on the inner surface of said cap, and a lower screw thread on the inner surface of said cap axially positioned closer to the rim of the cap than said upper screw thread, the rotational directions of said upper and lower screw threads being opposite to one another, the peak diameter of said lower screw thread being greater than the root diameter of said upper screw thread.
References Cited (Backward Citations)
CA532266A
Cited
US2960247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |