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Publication numberUS2879914 A
Publication typeGrant
Publication dateMar 31, 1959
Filing dateOct 17, 1957
Priority dateOct 17, 1957
Publication numberUS 2879914 A, US 2879914A, US-A-2879914, US2879914 A, US2879914A
InventorsFleckenstein Lambert W
Original AssigneeFleckenstein Lambert W
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Closure caps
US 2879914 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

CLGSURE CAPS Lambert W. Fleckenstein, Milwaukee, Wis. Application October 17, 1957, Serial No. 690,677 3 Claims. (Cl. 220-40) This invention relates to improvements in closure caps of a composite type.

An object of the invention is to provide a device of the type which will coact with helical elements exteriorly disposed on theneck of a vessel to be closed, the said helical elements having end depressions to provide a locking action. e

Another object of the invention is to provide means for releasing pressure when the closure cap is opened.

Other and further objects of the invention will appear as the description proceeds, reference being had to the accompanying drawing, in which:

Fig. l is a view in vertical cross-section of a closure cap and vessel neck embodying the invention.

Fig. 2 is an inverted plan view of the cap.

Fig. 3 is a plan view of a container neck and the helical ribs.

Fig. 4 is a view taken on line 4-4 of Fig. 1.

Fig. 5 is an elevational view taken on line 5-5 of Fig. 3.

Referring more particularly to the drawing, the numeral refers to the closure cap similar in construction to that described in my patent application bearing the Serial Number 557,496 and filed on January 5, 1956, and also in that previous patent application having the Serial Number 373,423, tiled August 10, 1953, now abandoned.

The cap 10 has radial ribs 11 over the top thereof for manual turning thereof, and a central vertical borey 12 to accommodate the bolt 13 which is threadedly engaged at 14 in the circular disc 15. The disc 15 has a circular depression at 16 in its under side 17 having a vertical wall at 18 thereof, against which an O-ring 19 is held by means of the split ringband retainer 20. The disc has vertical bores as at 21 as a pressure release means.

A container neck 22 has a plurality of circumferentially nited States Patent O ICC spaced helical ribs 23, each one of which has a depressed portion 24 at its upper end 25. The cap 10 is provided with a plurality of internal lugs 26 which ride up the ribs 23 and lock in the depressed portions 24. If the cap is turned to open same while the container is under pressure, the lugs 26 will lodge against the undersides of the depressed portions 24 and it will be impossible to remove the cap 10.

It will be understood that the device is capable of many modifications in structure and design, without departing from the spirit of the invention, within the scope of the appended claims.

Having thus described the invention, what is claimed and desired to be secured by Letters Patent of the United States, is:

1. In a closure cap, a horizontal disc suspended for limited pivotal movement within said cap, a downwardly disposed marginal ange on said disc, an D-ring seated within the flange, a split ring band disposed within said O-ring to hold it against said flange, said disc having a plurality of vertical bores therein adjacent the O-ring to relieve pressure.

2. In a closure cap, a horizontal disc suspended for limited pivotal movement within said cap, a downwardly disposed marginal ilange on said disc, an O-ring seated within the ange, a split ring band disposed horizontally within said O-ring to secure it against said flange, said disc having at least two vertical bores therein disposed adjoining the outer edges of the O-ring.

3. A closure cap, a plurality of inwardly projecting lugs Within the lower margin thereof, a horizontal disc suspended for limited pivotal movement within said cap, a downwardly disposed marginal ange on said disc, said disc having a plurality of pressure release apertures within the base of said flange, an 0-ring held within said ange, a split ring band installed within the O-ring to retain the latter against the ilange, a container neck adapted to receive the cap, circumferentially spaced helical ribs exteriorly disposed on said neck, and depressed portions on the release ends of said ribs to act as stops for the lugs when removal of the cap is attempted when said container is under pressure.

References Cited in the file of this patent UNITED STATES PATENTS 2,201,314 Illsley May 21, 1940 2,266,314 Eshbaugh Dec. 16, 1941 FOREIGN PATENTS 1,039,970 France May 20, 1953

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2201314 *Oct 21, 1936May 21, 1940Arthur H BoettcherCooling system
US2266314 *Aug 17, 1940Dec 16, 1941Gen Motors CorpRadiator sealing cap
FR1039970A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3081901 *Nov 14, 1961Mar 19, 1963Adamson United CompanyClosure
US3312373 *Apr 14, 1965Apr 4, 1967Richard A GentryContainer with combination handle and lid means
US3385968 *Jan 18, 1966May 28, 1968R A Stephen & Company LtdRadioactive radiation dosimeter of the silver phosphate glass type
US3913783 *Jan 17, 1974Oct 21, 1975Cooper AlfredSafety closure cap with retaining feet
US4203686 *Jul 17, 1978May 20, 1980Bowman Harold MManhole construction
US6935044Jun 13, 2002Aug 30, 2005Orscheln Products LlcConnection system for a fluid level measuring device
US6988403Oct 1, 2002Jan 24, 2006Orscheln Products LlcFluid level measuring device
US7055384Apr 8, 2002Jun 6, 2006Orscheln Products LlcFluid level measuring device
US7131213Jan 9, 2003Nov 7, 2006Orscheln Products LlcFluid level measuring device
U.S. Classification220/301, 220/304
International ClassificationB65D51/16, A47J27/08
Cooperative ClassificationB65D51/1688, A47J27/0806
European ClassificationB65D51/16E3, A47J27/08L2