Patent US3795337A successfully refreshed from Google Patents.
US3795337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety cap
Assignee: Yoshino Kogyosho Co Ltd
•
Filing: 1972-07-05
•
Granted: 1974-03-05
•
Expires: 1992-07-05
Abstract
Abstract A safety cap according to the present invention comprises an outer cap of a synthetic resin and an inner cap vertically movably and rotatably inserted into said outer cap. Between said inner and outer caps there are provided resilient engaging pieces, projections and engaging projecting members, by action of which usually the inner cap can be turned by turning only the outer cap in a tightening direction while the inner cap can not be turned, relative to the untightening direction, unless the outer cap is turned in such a state that the outer cap is pushed down, that is, the outer cap running idle.
Inventors
- 👤 T Nozawa
- 👤 T Tasaki
- 👤 K Nishiiue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:52
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/04; B65D50/041
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
172 words
A safety cap comprising an inner cap of a synthetic material having at its peripheral wall inner surface a thread part adapted to be threaded into a neck part of container and an outer cap of a synthetic material having said inner cap mounted therein vertically and rotatably, in which a plurality of resilient engaging pieces are projected with their utmost ends formed as free ends in the same diagonal direction from one top wall to the other top wall of said caps, projections are provided on said other top wall so as to engage with the utmost ends of said resilient engaging pieces only when the outer cap is turned in a tightening direction, and engaging projections, which are able to transmit the turning force of outer cap to the inner cap only when the outer cap is moved downward against the resilience of said resilient engaging pieces, are provided on a part of outer surface of the inner cap and a part of inner surface of the outer cap, respectively.
Claim 2
Dependent Claim
172 words
A safety cap comprising an inner cap of a synthetic material having at its peripheral wall inner surface a thread part adapted to be threaded into a neck part of container and an outer cap of a synthetic material having said inner cap mounted therein vertically and rotatably, in which a plurality of resilient engaging pieces are projected with their utmost ends formed as free ends in the same diagonal direction from one top wall to the other top wall of said caps, projections are provided on said other top wall so as to engage with the utmost ends of said resilient engaging pieces only when the outer cap is turned in a tightening direction, and engaging projections, which are able to transmit the turning force of outer cap to the inner cap only when the outer cap is moved downward against the resilience of said resilient engaging pieces, are provided on a part of outer surface of the inner cap and a part of inner surface of the outer cap, respectively.
Claim 3
Dependent Claim
226 words
A safety cap comprising an inner cap of a synthetic material having at its peripheral wall inner surface a thread part adapted to be threaded into a neck part of container and an outer cap of a synthetic material having said inner cap mounted therein vertically and rotatably, in which resilient engaging pieces are provided on the top wall peripheral part of said inner cap to be projected with their utmost ends formed as free ends in the same diagonal direction towards the top wall of the outer cap, a hole for taking out a metal mold is provided in the top wall of the inner cap below the said resilient engaging pieces, and further a packing is provided on the rear surface of the top wall of the inner cap to be able to block said hole, projections are provided on the inner surface of the top wall of the outer cap so as to engage with the utmost ends of the said resilient engaging pieces only when the outer cap is turned in a tightening direction, and engaging projections, which are able to transmit the turning force of outer cap to the inner cap only when the outer cap is moved downwards against the resilience of said resilient engaging pieces and turned in an untightening direction, are provided between said inner and outer caps.
Claim 4
Dependent Claim
226 words
A safety cap comprising an inner cap of a synthetic material having at its peripheral wall inner surface a thread part adapted to be threaded into a neck part of container and an outer cap of a synthetic material having said inner cap mounted therein vertically and rotatably, in which resilient engaging pieces are provided on the top wall peripheral part of said inner cap to be projected with their utmost ends formed as free ends in the same diagonal direction towards the top wall of the outer cap, a hole for taking out a metal mold is provided in the top wall of the inner cap below the said resilient engaging pieces, and further a packing is provided on the rear surface of the top wall of the inner cap to be able to block said hole, projections are provided on the inner surface of the top wall of the outer cap so as to engage with the utmost ends of the said resilient engaging pieces only when the outer cap is turned in a tightening direction, and engaging projections, which are able to transmit the turning force of outer cap to the inner cap only when the outer cap is moved downwards against the resilience of said resilient engaging pieces and turned in an untightening direction, are provided between said inner and outer caps.
Claim 5
Dependent Claim
227 words
A safety cap comprising an inner cap of a synthetic material having at its peripheral wall inner surface a thread part adapted to be threaded into a neck part of container and an outer cap of a synthetic material having said inner cap mounted therein vertically and rotatably, in which resilient engaging pieces are provided on the peripheral edge of top wall inner surface of the outer cap to be projected with their utmost ends formed as free ends in the same diagonal direction towards the top wall of inner cap, a hole for taking out a metal mold is provided in the top wall of the outer cap above said resilient engaging pieces, and further a top wall covering plate is provided on the outer surface of the top wall of the outer cap to block said hole, projections are provided on the upper surface of the top wall of the inner cap so as to engage with the utmost ends of the said resilient engaging pieces only when the outer cap is turned in a tightening direction, and engaging projections, which are able to transmit the turning force of outer cap to the inner cap only when the outer cap is moved downwards against the resilience of said resilient engaging pieces and turned in an untightening direction, are provided between said inner and outer caps.
Claim 6
Dependent Claim
227 words
A safety cap comprising an inner cap of a synthetic material having at its peripheral wall inner surface a thread part adapted to be threaded into a neck part of container and an outer cap of a synthetic material having said inner cap mounted therein vertically and rotatably, in which resilient engaging pieces are provided on the peripheral edge of top wall inner surface of the outer cap to be projected with their utmost ends formed as free ends in the same diagonal direction towards the top wall of inner cap, a hole for taking out a metal mold is provided in the top wall of the outer cap above said resilient engaging pieces, and further a top wall covering plate is provided on the outer surface of the top wall of the outer cap to block said hole, projections are provided on the upper surface of the top wall of the inner cap so as to engage with the utmost ends of the said resilient engaging pieces only when the outer cap is turned in a tightening direction, and engaging projections, which are able to transmit the turning force of outer cap to the inner cap only when the outer cap is moved downwards against the resilience of said resilient engaging pieces and turned in an untightening direction, are provided between said inner and outer caps.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |