← Back to Patent Explorer
US3729122A Expired / Lapsed US ⏱️ 0.0 years remaining

Safety container for inflammables

Assignee: Justrite Manufacturing Co
•
Filing: 1971-05-27
•
Granted: 1973-04-24
•
Expires: 1991-05-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A completely enclosed plastic container has two openings or vents. One vent has an internal valve and a pouring spout attached thereto. The other vent has a spring biased safety cap which raises for filling or to vent vapors when the internal pressure exceeds some predetermined level. A handle linkage controls the two vents so that the pouring valve opens first and the venting safety cap opens second, as the can is tipped. Suitable springs urge the valve, cap and handle to an automatically closed position when the container is sitting at rest. The handle linkage is attached to a vertical fin formed between the two vents by an enlargement of the flash line formed in molding the container.

Inventors

  • 👤 F Flider

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 23:02
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/06; B65D47/08; B65D47/0857; B65D47/0876; B65D1/00; B65D1/12; B65D1/20; B65D45/00; B65D45/02; B65D45/025; B65D2251/00; B65D2251/10; B65D2251/1016; B65D2251/1058; Y; Y10; Y10S; Y10S215/00; Y10S215/902

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 122 words
A plastic safety container comprising a pair of spaced apart neck-like openings at the top portion of said container, upstanding fin means integral to said container and extending between said spaced apart pair of neck-like openings, valve means for controllably closing and opening a first of said pair of neck-like openings, cap means for controllably closing and opening a second of said pair of neck-like openings, said valve means and said cap means being normally closed, handle linkage means for operating said valve means and said cap means to open said neck-like openings in a predetermined sequence, and attachment bracket means for coupling said handle linkage means to said upstanding fin means, the attachment bracket means being independent of said neck-like openings.
Claim 2
Dependent Claim 122 words
A plastic safety container comprising a pair of spaced apart neck-like openings at the top portion of said container, upstanding fin means integral to said container and extending between said spaced apart pair of neck-like openings, valve means for controllably closing and opening a first of said pair of neck-like openings, cap means for controllably closing and opening a second of said pair of neck-like openings, said valve means and said cap means being normally closed, handle linkage means for operating said valve means and said cap means to open said neck-like openings in a predetermined sequence, and attachment bracket means for coupling said handle linkage means to said upstanding fin means, the attachment bracket means being independent of said neck-like openings.
Claim 3
Dependent Claim 15 words
The safety can of claim 1 wherein said neck-like openings are integral to said container.
Claim 4
Dependent Claim 115 words
The plastic safety container of claim 1 wherein said attachment bracket means comprises a saddle bracket, means on said saddle bracket for pivotally attaching a carrying handle to said saddle bracket, means being for normally maintaining said carrying handle in a downward position, said carrying handle being attached to lost motion means in said handle linkage means, in said predetermined sequence said lost motion means maintaining said valve means and cap means closed when said carrying handle is lifted from said normally downwardly position to a carrying position, said lost motion means operated responsive to further movement of said handle opposite to said normally downward position for opening said valve means and said cap means.
Claim 5
Dependent Claim 117 words
The plastic safety container of claim 3 wherein said valve means comprises: valve body means, a hose attaching opening in said valve body means, a valve shaped to close the opening into the container at the bottom of said neck-like opening, valve stem means attached to said valve, valve cap means removably attached to said valve body, aperture means in said valve cap means for receiving said valve stem means therethrough, spring means for keeping said valve normally closed, and linking bracket means for linking said valve stem means to said handle linkage means for opening said valve to connect said hose attaching opening to the opening into the container against the forces of said spring means.
Claim 6
Dependent Claim 24 words
The plastic safety container of claim 4 including means for attaching said valve body means to said first of said pair of neck-like openings.
Claim 7
Dependent Claim 223 words
The plastic safety container of claim 5 wherein said means for attaching said valve body means to said first of said pair of neck-like openings comprises threads at the top of said first of said pair of neck-like openings, a notch surrounding said valve body means at a fixed distance from the bottom of said valve body means, the bottom of said valve body means sized to slip fit into said first of said pair of neck-like openings below said notch, shoulder means on said valve body means above the bottom of said valve body means which fits into said first of said neck-like openings for resting on the top of said first of said pair of neck-like openings, swivel ring means sized to fit over said valve body above said notch, lock ring means located in said notch and being larger in outer diameter than said swivel ring means, threads on said swivel ring means to match and mate with the threads on said first of said pair of neck-like openings, whereby when said swivel ring means is threaded onto said first of said pair of neck-like openings said valve body means is pulled down, sealed and tightened against said first of said pair of neck-like openings to attach said valve body means to said first of said pair of neck-like openings.
Claim 8
Dependent Claim 77 words
The plastic safety container of claim 4 wherein said saddle bracket means comprises first ear means rising juxtaposed to said valve body means, said first ear means being integral to said saddle bracket means, said linking bracket means for linking said valve stem means being pivotally attached to said ear means whereby when said handle is operated, said bracket means pivots on said ear means and pulls said valve stem against the force of said spring means.
Claim 9
Dependent Claim 78 words
The plastic safety container of claim 6 wherein said valve body means is plastic and includes integral bracket means integral thereto, said integral bracket means having a pivot point thereon, means for pivotally attaching said linking bracket means to said integral bracket of said valve body, whereby when said handle means is operated said linking bracket means pivots around the pivot point of said integral bracket means to open said valve against the force of the spring means.
Claim 10
Dependent Claim 49 words
The plastic safety container of claim 8 wherein said integral bracket means is shaped to be contiguous with the end of said upstanding fin means, and wherein the said saddle bracket means extends beyond said fin means to reinforcingly attach said integral bracket means to said upstanding fin means.
Claim 11
Dependent Claim 62 words
The plastic safety container of claim 7 wherein said saddle bracket means further comprises second and third integral ear means, said second integral ear means used to pivotally attach said handle means, and said third integral ear means used for pivotally attaching a control bracket to control the opening of said cap means responsive to the operation of said handle linkage means.

References Cited (Backward Citations)

US2040087A Cited
US2143250A Cited
US3254789A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-04-23 1976-10-23 1977-04-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-23 1980-10-23 1981-04-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-23 1984-10-23 1985-04-24 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag