US3860133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety cap
Assignee: Individual
•
Filing: 1973-01-26
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Granted: 1975-01-14
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Expires: 1993-01-26
Abstract
Abstract A safety cap for containers of dangerous products whereby the cap is locked onto the container by cooperating parts on the cap and container and cannot be removed from the container until the cap is in a proper orientation with respect to the container.
Inventors
- 👤 Leo M Boxer
- 👤 Robert W Boxer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:38
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/06; B65D50/061
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
321 words
A safety cap and container combination, comprising a container having a closed bottom, a side wall, and an open upper end, a radially outwardly extending circumferential locking rib on the side wall adjacent the open upper end thereof, said rib having a substantially planar bottom surface and an inwardly tapered upper surface and having at least one notch therethrough; said cap comprising a top portion having a depending peripherally continuous skirt with an inner surface and an open bottom end, at least two circumferentially extending radially inwardly projecting camming lugs on the inner surface of the skirt at the open bottom thereof and closely circumferentially spaced apart in one half circular portion of the skirt, said camming lugs having substantially planar lower surfaces substantially in the plane of the open bottom end of the skirt and outwardly tapered upper surfaces and said lugs having a radial thickness substantially equal to the skirt wall thickness, and at least one circumferentially extending radially inwardly projecting locking lug on the inner surface of the skirt at the open bottom end thereof in the other half circular portion of the skirt and opposite the camming lugs and substantially coplanar therewith, said locking lug having a circumferential extent substantially the same as said notch and registerable with the notch in one position of the cap so as to pass therethrough to release the cap from the container, said locking lug and camming lugs cooperably engaged with the lower surface of said locking rib in all other positions of the cap to lock the cap to the container, said camming lugs engageable with the locking rib to define a fulcrum about which the cap is pivoted when the locking lug is removed through said notch to remove the cap from the container, and said plurality of camming lugs and the locking lug and locking rib cooperating to effect a vacuum-tight seal of the cap on the container.
Claim 2
Dependent Claim
321 words
A safety cap and container combination, comprising a container having a closed bottom, a side wall, and an open upper end, a radially outwardly extending circumferential locking rib on the side wall adjacent the open upper end thereof, said rib having a substantially planar bottom surface and an inwardly tapered upper surface and having at least one notch therethrough; said cap comprising a top portion having a depending peripherally continuous skirt with an inner surface and an open bottom end, at least two circumferentially extending radially inwardly projecting camming lugs on the inner surface of the skirt at the open bottom thereof and closely circumferentially spaced apart in one half circular portion of the skirt, said camming lugs having substantially planar lower surfaces substantially in the plane of the open bottom end of the skirt and outwardly tapered upper surfaces and said lugs having a radial thickness substantially equal to the skirt wall thickness, and at least one circumferentially extending radially inwardly projecting locking lug on the inner surface of the skirt at the open bottom end thereof in the other half circular portion of the skirt and opposite the camming lugs and substantially coplanar therewith, said locking lug having a circumferential extent substantially the same as said notch and registerable with the notch in one position of the cap so as to pass therethrough to release the cap from the container, said locking lug and camming lugs cooperably engaged with the lower surface of said locking rib in all other positions of the cap to lock the cap to the container, said camming lugs engageable with the locking rib to define a fulcrum about which the cap is pivoted when the locking lug is removed through said notch to remove the cap from the container, and said plurality of camming lugs and the locking lug and locking rib cooperating to effect a vacuum-tight seal of the cap on the container.
Claim 3
Dependent Claim
295 words
A safety cover and container combination comprising a flexible cover member having a top portion and a depending peripherally continuous wall portion, the wall portion having an interior surface, the interior surface having at least one radially inwardly projecting locking lug thereon in one half circular portion thereof extending inwardly from the wall portion at the lower end thereof a distance substantially equal to the thickness of the wall portion and having a substantially planar upper surface and an angled lower surface, the interior surface also having a plurality of radially inwardly projecting camming lugs in the other half circular portion thereof and opposite the locking lug, the container having a mouth portion, an outwardly projecting circumferential rib on the mouth portion adjacent an upper end thereof, the rib being substantially continuous with at least one slot formed in one part thereof, the rib having a substantially planar lower surface and an angled upper surface, the locking lug and the camming lugs engaging the lower surface of the rib to tightly hold the cover on the container, and the camming lugs engaging the lower surface of the rib to aid in the application and removal of the cover from the container, the angled surfaces of the locking lug and rib allowiNg the lug and rib to frictionally slide past each other in placement of the cover on the container in any position due to the flexibility of the cover, the substantially planar surface and thickness of the locking lug preventing removal of the cover from the container except when the locking lug is positioned in registry with the slot in the rib for removal therethrough, and indicating means on the cover and container indicating the adjacency of the locking lug and slot when in alignment.
Claim 4
Dependent Claim
295 words
A safety cover and container combination comprising a flexible cover member having a top portion and a depending peripherally continuous wall portion, the wall portion having an interior surface, the interior surface having at least one radially inwardly projecting locking lug thereon in one half circular portion thereof extending inwardly from the wall portion at the lower end thereof a distance substantially equal to the thickness of the wall portion and having a substantially planar upper surface and an angled lower surface, the interior surface also having a plurality of radially inwardly projecting camming lugs in the other half circular portion thereof and opposite the locking lug, the container having a mouth portion, an outwardly projecting circumferential rib on the mouth portion adjacent an upper end thereof, the rib being substantially continuous with at least one slot formed in one part thereof, the rib having a substantially planar lower surface and an angled upper surface, the locking lug and the camming lugs engaging the lower surface of the rib to tightly hold the cover on the container, and the camming lugs engaging the lower surface of the rib to aid in the application and removal of the cover from the container, the angled surfaces of the locking lug and rib allowiNg the lug and rib to frictionally slide past each other in placement of the cover on the container in any position due to the flexibility of the cover, the substantially planar surface and thickness of the locking lug preventing removal of the cover from the container except when the locking lug is positioned in registry with the slot in the rib for removal therethrough, and indicating means on the cover and container indicating the adjacency of the locking lug and slot when in alignment.
Claim 5
Dependent Claim
33 words
A safety cover and container combination as in claim 2, wherein the locking lug is so sized as to just pass through the slot, and the camming lugs are larger than the slot.
Claim 6
Dependent Claim
45 words
A safety cover and container combination as in claim 2, wherein there are two locking lugs and three camming lugs on the interior surface of the wall portion and two slots in the rib, the locking lugs and the slots being spaced apart equal distances.
Claim 7
Dependent Claim
39 words
A safety cover and container combination as in claim 2, wherein gripping means are provided on the cover to aid in rotating the cover relative to the container to obtain the adjacency of the locking lug and the slot.
Claim 8
Dependent Claim
30 words
A safety cover and container combination as in claim 2, wherein the interior surface and the container each have complementary thread members thereon aiding in the sealing of the container.
Claim 9
Dependent Claim
38 words
A safety cover and container combination as in claim 2, wherein the interior of the cover has a plug extending downwardly therein of a size to engage the inner wall of the container mouth to seal the container.
Claim 10
Dependent Claim
57 words
A safety cover and container combination as in claim 2, wherein the mouth of the container has an outwardly extending bead thereon at the open end of the mouth and the cover has a groove formed therein at the juncture of the wall portion and the top to receive the bead and aid in sealing the container.
Claim 11
Dependent Claim
22 words
A safety cover and container combination as in claim 2, wherein the slot in the rib is of an inverted keystone configuration.
Claim 12
Dependent Claim
35 words
A safety cover and container combination as in claim 3, wherein the interior surface is substantially smooth and continuous except for the locking lugs and camming lugs, all lugs having the same inward radial extent.
Claim 13
Dependent Claim
76 words
A safety cover and container combination as in claim 2, wherein there are two locking lugs and three camming lugs on the interior surface each having the same inward radial extent, the locking lugs being smaller in annular extent than the camming lugs and of a size substantially the same as the width of the slots, and additional complementary means are provided on the interior surface and the container aiding in the sealing of the container.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |