EP0173127A2 - Security seal housing - Google Patents
Security seal housing Download PDFInfo
- Publication number
- EP0173127A2 EP0173127A2 EP85109863A EP85109863A EP0173127A2 EP 0173127 A2 EP0173127 A2 EP 0173127A2 EP 85109863 A EP85109863 A EP 85109863A EP 85109863 A EP85109863 A EP 85109863A EP 0173127 A2 EP0173127 A2 EP 0173127A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- flanges
- seal
- flange
- welding
- cup
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/03—Forms or constructions of security seals
- G09F3/0305—Forms or constructions of security seals characterised by the type of seal used
Definitions
- the device may be. manufactured by forming the members in progressive dies, press fitting the forward end of the platform of the internal locking member through the aperture in the hemispherical end of one of the members so that it extends on the central axis of the member. the member. The other member is then superimposed over the projecting rear end of the locking platform, which end is curved at the same radius of curvature as that of the interior bottom surface of said other member.
Abstract
Description
- In the art of security seals, a commonly used type of seal for sealing doors of cargo containers such as box cars and truck trailers is the so-called ball seal, which has a body formed of two cup-shaped portions forming an enclosure retaining a shackle locking mechanism. The two portions are held together by providing a radial flange on one of the body portions at the open end thereof, and providing a deformable flange-like portion at the open end of the other body portion; which, on assembly of the two portions, is crimped over the flange of the radial flange on said one body portion.
- It has been found that if sufficient time is available, a seal body of this type can be defeated by carefully bending the crimped portion outwardly far enough that the body portions can be separated to enable release of the shackle to open the cargo door. The seal can then be re-assenbled by re-inserting the shackle and then re- crimping the retaining portion over the flange of the other portion. If done carefully, it is then difficult or impossible to detect that the seal has been opened.
- A seal of the type comprising two cylindrical members open at one end and closed at the other end by a hemispherical portion, said members being fastened together and containing internal locking means for receiving an apertured shackle in locking engagenent. In a preferred embodiment of the invention the internal locking means has a support platform with shackle engaging means associated therewith, one end of said platform being press fitted and retained in an aperture in the hemispherical portion of one member, the other end being shaped and positioned to be centrally maintained by the inner surface of the hemispherical end portion. Each member has a radially extending flange at the open end, said flanges being superimposed and welded together in a manner such that there is no gap between the flanges at the outer periphery thereof. In a preferred embodiment of the invention at least one of the flanges is provided with a series of welding projections which are formed by enbossing the material of the flange. The welding operation is so conducted that the embossments are "puddled" during melding so that they are completely flattened allowing the flanges to fit tightly together after welding.
- The device may be. manufactured by forming the members in progressive dies, press fitting the forward end of the platform of the internal locking member through the aperture in the hemispherical end of one of the members so that it extends on the central axis of the member. the member. The other member is then superimposed over the projecting rear end of the locking platform, which end is curved at the same radius of curvature as that of the interior bottom surface of said other member.
- While the two portions are being retained in this position, a welding electrode in the form of an annulus is placed over the assembly so that it bears against the flange. Current and pressure are then applied to the electrode to soften or "puddle" the projections and thereby allow the flanges to be welded tightly together.
- In a modified form of the invention, an aperture is provided at each position on a flange that is opposite the position of a projection on the other flange, so that when the projection is "puddled" by the welding process, the projections fill the aperture.
-
- Figure 1 is a view in section of a pair of seal body portions in position for having their flanges superimposed for welding together.
- Figure 2 is an enlarged view of a portion of the superimposed flanges of the body portion, with a welding electrode positioned 'for welding the flanges together.
- Figure 3 is a view in section, partly in elevation, of the assembled seal body.
- Figure 5 is an enlarged view in section of a modified form of the flanges of the seal body.
- Referring to the drawing, there is illustrated a seal of the ball type and a method of manufacture thereof.
- The
seal 10 is formed of two cup-shaped body portions hemispherical bottoms 16 and 18, and retain a shackleengaging mechanism 20 in the interior thereof. - The shackle
engaging mechanism 20 may be of any desired type, such as is shown in U.S. patent 4,424,995 issued January 10, 1984. Oneend 22 of themechanism 20 is dimensioned to extend through a slot 24, the slot and theend 22 being so dimensioned that the shackle engaging mechanism is tightly retained in the slot. Theother end 26 of the shackle engaging mechanism is rounded to approximate radius as that of the interior surface of thebottom portion 16 of theportion 12, so that said end is retained against transverse movement in any direction. (See Figure 3). - To retain the two
body portions flanges welding projections 32 which are formed by embossing the flange. In one preferred embodiment of the invention theprojections 32 are spaced closely together near the outer edge of the flange and are slightly elongated in a circumferential direction for a purpose to appear hereinafter. - In a preferred method of manufacture of the seal, the two body portions are formed in separate sets of progressive dies from continuous metal strips. Thereafter the
end 22 of the shackleengaging mechanism 20 is press fitted through the slot 24 from the inside of thebody portion 14. The two body portions are then aligned and moved together by suitable mechanism (not shown) so that theflanges - A
welding ring 34 is then placed over theflange 28 and pressure and current is then applied to the flanges to heat the projections until they "puddle" and collapse, allowing the flanges to seat tightly against each other so that no gap remains between the flanges at the outer periphery. - The assembled seal may then be removed from the carrying or supporting structure.
- The fact that the
projections 32 are positioned closely together near the periphery of the flange and are elongated insures that a major portion of the periphery of the flanges is welded together to prevent any gap fran occurring between the flanges at any point on the periphery thereof, yet providing the advantage of high current density at the projections required for effective welding. - It has been found impossible to open the above described seal without leaving evidence of tampering, such as a deformed flange portion, which, if bent, cannot be completely returned to the original flat condition. In most instances, attempts to open the seal will result in a torn flange, which is impossible to restore or conceal.
- Although the two body portions may be formed simultaneously from two strips of metal in two sets of progressive dies and immediately assembled, it will be understood by those skilled in the art that if desired, the body portions may be manufactured and stored, and then hopper-fed into suitable assembly machinery for insertion of the shackle- engaging mechanism and for welding together.
- Referring now to Figure 5, there is illustrated a modified form of seal of the type described above, in which the
flange 28 haswelding projections 132, and the flange 130 of the other body portion hasapertures 134 positioned to receive theprojections 132 when the two flanges are superimposed before welding. When theprojections 132 are "puddled" during welding, they fill theapertures 134 to retain the flanges together. This structure has the advantage that the two flanges are positioned tightly together before welding, eliminating the possibility of any gap occurring between the periphery of the flanges after welding in case one of the projections does not "puddle" for any reason. - Since certain other changes apparent to one skilled in the art may be made in the herein described embodiments of the invention without departing from the scope thereof, it is intended that all matter contained herein be interpreted in an illustrative and not a limiting sense.
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US63876784A | 1984-08-08 | 1984-08-08 | |
US638767 | 1984-08-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0173127A2 true EP0173127A2 (en) | 1986-03-05 |
EP0173127A3 EP0173127A3 (en) | 1986-07-23 |
Family
ID=24561334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85109863A Withdrawn EP0173127A3 (en) | 1984-08-08 | 1985-08-06 | Security seal housing |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0173127A3 (en) |
JP (1) | JPS61172178A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8149114B2 (en) | 2010-02-09 | 2012-04-03 | Ekstrom Industries, Inc. | Utility meter tamper monitoring system and method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2942908A (en) * | 1958-04-18 | 1960-06-28 | Wallace J Dickey | Self-locking shackle seal |
GB2121727A (en) * | 1982-05-26 | 1984-01-04 | Brooks Co E J | Security seal |
US4424995A (en) * | 1980-11-05 | 1984-01-10 | E. J. Brooks Company | Ball type seal |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53145800A (en) * | 1977-05-23 | 1978-12-19 | Sumio Tomita | Meter sealing device for electricity gas and like |
-
1985
- 1985-08-06 EP EP85109863A patent/EP0173127A3/en not_active Withdrawn
- 1985-08-07 JP JP17396785A patent/JPS61172178A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2942908A (en) * | 1958-04-18 | 1960-06-28 | Wallace J Dickey | Self-locking shackle seal |
US4424995A (en) * | 1980-11-05 | 1984-01-10 | E. J. Brooks Company | Ball type seal |
GB2121727A (en) * | 1982-05-26 | 1984-01-04 | Brooks Co E J | Security seal |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8149114B2 (en) | 2010-02-09 | 2012-04-03 | Ekstrom Industries, Inc. | Utility meter tamper monitoring system and method |
Also Published As
Publication number | Publication date |
---|---|
JPH0327907B2 (en) | 1991-04-17 |
JPS61172178A (en) | 1986-08-02 |
EP0173127A3 (en) | 1986-07-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): BE CH DE FR GB IT LI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
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AK | Designated contracting states |
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17P | Request for examination filed |
Effective date: 19860618 |
|
17Q | First examination report despatched |
Effective date: 19870430 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19890509 |
|
R18W | Application withdrawn (corrected) |
Effective date: 19890509 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ROESSNER, JOHN K., III Inventor name: SWIFT, ALLAN W. |