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Publication numberUS1702205 A
Publication typeGrant
Publication dateFeb 12, 1929
Filing dateSep 24, 1926
Priority dateSep 24, 1926
Publication numberUS 1702205 A, US 1702205A, US-A-1702205, US1702205 A, US1702205A
InventorsFred Freedman
Original AssigneeFred Freedman
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tank-cap lock
US 1702205 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Feb. 12, 1929.


Feb. 12, 1929.

F. FREEDMAN TANK CAP LOCK 2 Sheets-Sheet 2 Filed Sept. 24. 1926 Fc'edm/a WITNESS:

Pauline Feb. 12,1929.


TANK-CA1 LOCK- E Application filed September 24, 1926. Serial 110. 137,535.

. This invention relates to a lock for "caps of tanks and the like, the general object of the invention being to provide means for preventing removal of the cap until the looking device is removed by a key or the like into inoperative position so that the contents of the tank cannot be stolen.

Another object ofthe invention is to provide a cover iii which the cap is rotatably mounted so that when the cover is turned, with the lock in inoperative position, the cover will turn on the cap so that the cap will not be unscrewed from the filling spout but when the lock is in operative position, the cover will be fastened to the cap and therefore the cap must turn with the cover.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifi-' 'cally pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denotelike or corresponding arts throughout the several views, and in w ich Figure 1 is a sectional view through the invention showing the same in place, on the filling spout of a tank.

Figure 2 is a section on line 2 2 of Figure Figure 3 is a section on line 3-3 of Figure 1, but shdwing the lock in inoperative position.

Figure 4 is a view 'of the locking bolts.

Figure 5 is a horizontal sectional view with the bolts retracted.

Figure 6 is a sectional view of the ring which fastens the cap to the cover.

Figure'7 is a sectional view through the Figure 8 is a view of the/lower part of the lock. a

Figure 9 is a plan view of the lock.

In theseviews, 1 indicates the cap which rotate with the cover so that it can over the lower part ofthe cap; as clearly shownin Figure 1, so that th'cap is covered by the ring. The ring is provided with notches 8 on its exterior wall for receiving the ends of the screws 9 which are threaded into theflange of the cover and act to hold the ring in place. The heads of the screws are blank so that theycannot be removed after once being put in lace. A look carrying mem er 10 is held in the center of the cover by the screw 11 and the lock barrel 12 is rotatably mounted in the said member so that it can be turned by a key 13. This turning movement is limited by a stop pin 14 on the bottom of the member 10 engaging a long notch 15 in a plate 16 which is fastened to .the bottom of the barrel. This plate carries a pair of pins 17 which engage notches 18 formed in the locking bolts 19 which are placed between the cap and cover and are guided in their movement by the guiding projections 20. I

From the foregoing, it will be seen that as long as the bolts are in retracted position, the cover will turn on the cap that it will be impossible to unscrew the cap, from the spout 2 as the cover will rotate on the cap without moving the cap. When it is desired to remove the cap, the key is inserted in the keyhole of the lock barrel andgiven a turn to cause the pins 17 to project the bolts so that the ends of the bolts will enter the notches 4, when the bolts come into register with such notches, due to .the rotation of the parts. Then the cover will be looked to the cap and thus the cap will moved from the spout. I prefer to so form the lock that the key cannot be withdrawn from the barrel as long as the bolts are in projected position.

The vent 21 in thecap is directly under the keyhole'so that air passing through the keyhole can enter the tank through the vent. A cover 22 is also provided for the keyhole 1 0 when the key is not in place.

This device is mainly intended for the caps of gasoline tanks of motor vehicles but it will, of course, be understood that it can be used for locking'other types of caps in place. t

It is thought from the foregoing description that the advantages and novel features of my invention will be readily ap arent.

I desire it to be understood t at I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What I claim is t r In combination, a cap adapted to be threaded to its receiving member, an upstanding annular flange at the top of the'cap having diametrically opposed notches in its interior wall, a cover fitting over the cap and resting on said flange, and defining a space therebetween, said cap and its flanges, a ring extending into the cover and covering the exterior wall of the cap said ring having an annular groove therem for receiving the flange of the cap, means for fastening the ring to the cover for rotation therewith, with relation to the cap, horizontally disposed looking bolts in the space between the cap and cover and movable in opposite directions to cause their outer ends to engage the notches in the flanges of the cap, a key actuated locking tumbler, spaced pins depending from the bottom of said tumbler, and said locking bolts having transverse grooves to receive said pins whereby said bolts are actuated 25 incident to the rotation of said tumbler.

In testimony whereof I afiix my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2528372 *Jun 6, 1945Oct 31, 1950Ralph H KelloggThermal locking radiator cap
US2747763 *Oct 30, 1951May 29, 1956Sach Clarence EdwardClosure caps for the filler necks of automobile petrol tanks
US3537283 *Oct 17, 1968Nov 3, 1970Int Harvester CoLocking filler cap
US4000632 *Aug 4, 1975Jan 4, 1977Stant Manufacturing Company, Inc.Locking gas cap
US4031727 *May 12, 1976Jun 28, 1977Groat Philip M DeKing pin lock
US4073168 *Apr 23, 1976Feb 14, 1978Kabushiki Kaisha Komatsu SeisakushoDevice for releasably locking a cap on a closed position
US4280346 *May 21, 1979Jul 28, 1981Stant Inc.Torque override threaded locking cap
US4280347 *Dec 7, 1979Jul 28, 1981Stant Inc.Torque override threaded locking cap
US4984698 *Dec 12, 1988Jan 15, 1991Stuckey William CLockable closure cap
US7287404 *Dec 8, 2005Oct 30, 2007Flow Security Systems, Inc.Security device for a threaded element
US7624889Jan 19, 2007Dec 1, 2009Bemis Manufacturing CompanyLocking cap
US7797972May 8, 2007Sep 21, 2010Flow Security Systems, Inc.Secure fire hydrant cap
US8074334Jan 19, 2007Dec 13, 2011Bemis Manufacturing CompanyModular ratchet cap
DE864227C *Jan 8, 1950Jan 22, 1953Carl HaukVerschluss fuer Einfuellstutzen, insbesondere von Kraftstoffbehaeltern
DE876056C *Feb 29, 1940May 7, 1953Freitag & Co K GVerschluss fuer Fluessigkeitsbehaelter mit Gewinde-Einfuellstutzen
U.S. Classification70/165, 70/231, 220/210
International ClassificationB60K15/04
Cooperative ClassificationB60K15/0409
European ClassificationB60K15/04F1