Abstract: A tamper-indicating seal of the type having a bolt retained in a lock body, wherein the lock body is surrounded by a shroud of frangible, brittle material and provided with a grooved outer surface and flanged entrance way for receiving and surrounding the bolt end, whereby the shroud is easily fractured, thus providing visual indication of tampering. Visual detection of tampering may be enhanced by a coating applied to the outer surface of the shroud.

Abstract: The present invention provides a heavy duty seal for hasps and latches in combination with a light duty tamper-indicating seal, which extends through the heavy duty seal for indicating tampering or breaking of the heavy duty seal. A sheathed bundle of optical fibers extends through aligned bores in parts of a heavy duty bolt type seal. End portions of the bundle are locked in a locking block and terminal ends of the fibers are exposed in surfaces of the block for observation and indications of light transmittal.

Abstract: A rotatable seal which includes two inter-fitted relatively rotatable members. A sealing wire is passed through a hasp and through aligned apertures in the members. Relative rotation of the members causes the sealing wire to be wrapped at least partially around one of the members. Relative axial displacement of the members causes the apertures to be mis-aligned and the seal to be locked.

Abstract: A ball seal having an elongated, flexible metal strap for providing locking engagement with a ball-shaped housing. A locking platform, having two frangibly joined leaves, is mounted in the housing for receiving the ends of the metal strap. A pair of locking tabs are located on one leaf and a pair of locking rings are mounted on the locking platform. The seal is placed in use by passing the strap through a structure to be sealed and then sliding the ends into the locking platform to effect locking engagement between the strap ends, and the locking tabs and rings. If the strap is forced from the housing, the leaf having the locking tabs thereon will be torn from the other leaf at the frangible joint, thereby destroying the locking platform beyond reasonable repair.

Abstract: A padlock-type security seal including a U-shaped shackle having a pair of reversely bend end portions. A body portion and a brightly colored insert are assembled to form a pair of chambers for receiving and locking the bent end portions. Movable tangs and matching cavities are formed as an integral part of the insert adjacent the chambers. The body portion has a plurality of transparent windows adjacent the cavities. Attempts to open the seal by deforming the shackle to remove the bent end portions from the chambers will result in moving the tangs into locking containment with the cavities thereby visually indicating tampering via the transparent windows.

Abstract: A padlock-type security seal having tamper-indicating means to cause the shackle ends to break through and protrude from the walls of the seal body when serious attempts are made to remove the shackle. The seal includes a pair of slots each having a shoulder for engaging the shackle ends. When serious attempts are made to force the shackle from the seal, a ramp will engage the shackle ends and force them against the seal walls. With sufficient force applied to the shackle, the shackle ends will rupture the seal body.

Abstract: A padlock-type security seal including a U-shaped shackle, a pair of reversely bent end portions, and a transparent body portion having a pair of chambers for receiving the bent end portions. The chambers each have a locking groove therein for receiving the bent end portions. A frangible tab is mounted adjacent one of the locking grooves. Attempts to pick the seal by deforming the shackle will result in breaking the tab. The tab, after breaking, will protrude into the chamber where it can be viewed through the transparent body to indicated tampering.

Abstract: A padlock type security seal and method of making same including a U-shaped shackle, a pair of reversely bent end portions, and a body portion having a pair of chambers for receiving the bent end portions. The chambers each have a locking groove therein for receiving the bent end portions. The seal elements are designed from two molded pieces, an insert and a body. The relative dimensions of the chambers, the shackle, and the locking grooves are chosen to prevent picking.

Abstract: A security seal having a tag attached to a flat strap at the central portion by a pair of flexible members. The seal is adapted for sealing a box structure or container having a strap in one surface thereof and a hasp attached to the container. The tag extends upwardly so as to be visible against the surface of the hasp and container. Formed in the label and the tag surface, such as by stamping or the like, are a plurality of circular scores randomly positioned. The random positioning may be recorded to provide a means for verification. Any attempt to remove the label from the tag will result in destruction of the label.

Abstract: A security seal having a plastic body including three elongated parallel chambers. Mating with the body is a U-shaped resilient shackle having a pair of legs each having a reversely bent end portion terminating in a sharp edge for insertion in two of the chambers. The third chamber in the body contains a frangible ampule containing a liquid dye. When used to seal a structure, the shackle is threaded through the structure, and the legs are inserted into the chambers. The sharp edges of the reversely bent end portions are flexed into tight engagement with the interior walls of the chambers.

Abstract: An identification seal for an electricial cable having resilient insulation on the surface thereof, said seal comprising a flat plastic body retaining a wire shackle. The shackle is provided with a pair of legs for engagement in seal body apertures and has a medial portion connecting the legs which comprises a semi-circular loop portion for gripping the cable, the plane of said semicircular portion being perpendicular to the plane of the shackle legs and the plane of a seal face so that when the seal is assembled onto the cable said face of the seal body is readily visible. Numbers or letters identifying the particular cable may be impressed into the surface of the seal face. The components are so dimensioned that when the seal is assembled onto a cable, the cable is gripped firmly by the loop portion of the shackle to prevent longitudinal or rotational movement of the seal on the cable.

Abstract: A security seal having a plastic body including three elongated parallel chambers. Mating with the body is a U-shaped resilient shackle having a pair of legs each having a reversely bent end portion terminating in a sharp edge for insertion in two of the chambers. The third chamber in the body contains a frangible ampule containing a colorless liquid. A solid substance that combines with the liquid to create a third substance with a bright hue is stored in the third chamber and/or is coated on selected portions of the seal. When used to seal a structure, the shackle is threaded through the structure, and the legs are inserted into the chambers. The sharp edges of the reversely bent end portions are flexed into tight engagement with the interior walls of the chambers.

Abstract: A seal of the type resembling a padlock and comprising a plastic housing having a pair of apertures for receiving a shackle of the type formed of a U-shaped piece of wire which reversely bent end portions, the extreme ends of which are intended to dig into the walls of the body apertures to prevent removal of the shackle. The body is provided with at least one longitudinal groove which is centrally located between the position of the shackle apertures, and the ends of the shackle are sharpened or beveled in a manner such that if an excessive tension is applied to a shackle leg, the sharpened end will penetrate the side wall of the groove, pass across the groove or just behind the bottom of the groove, and enter the opposite groove wall. The shackle, or a portion of raised plastic from the bottom of the groove is thereafter visible in the groove and gives visual evidence of tampering.

Abstract: An all plastic fastener adapted, in one embodiment, for use as a seal for a coin bag or the like, and in another embodiment as a cable tie or the like.The seal comprises a housing having an aperture therethrough and an integral shackle extending from the housing for insertion into the housing opening. The shackle has ratchet teeth along the outer edges, and the housing has internal means for engaging the ratchet teeth when the shackle is pulled through the opening, to prevent reverse movement of the shackle in the housing. In a preferred embodiment of the invention the shackle has an axial slot disposed in the portion having the teeth to allow the sides of the shackle to flex together when it is drawn through the housing. When used as a security seal, a locking member may be inserted into the slot between the shackle portions in the housing to maintain them pressed outwardly into engagement with the locking members in the housing.

Abstract: A locking cover assembly for the ends of an electric meter retaining ring, to receive a lock bolt from the front side thereof to retain the cover in place and thereby prevent access to the clamping bolt that retains the ring in place. The cover comprises a housing having an internal locking plate apertured to receive the end of a lock bolt in a position such that it extends between the legs of the retaining ring and over the clamping bolt.

Abstract: A seal for a gas meter coupling nut comprising a ring-shaped housing formed of two separate but identical halves made of relatively brittle molded plastic and having integrally molded fastening means for snapping together the two halves into locking non-removable engagement. The two halves are shaped and dimensioned to be freely, laterally movable a small but appreciable amount relative to each other when locked so that tapping said housing will produce a rattle-like sound thereby indicating that the seal has not been broken open and the halves glued back together.

Abstract: A seal of the type having a housing with internal resilient fingers for receiving a shouldered stud in locking engagement. The housing is generally cylindrical with a closed end and an open end. In one embodiment of the invention a separate member carrying the resilient fingers is secured into the open end of the housing. In another embodiment of the invention a cylindrical metallic member having an open end and a closed end is retained in the housing behind the member carrying the resilient fingers so that access to the fingers to release the stud cannot be had by cutting off the end of the plastic housing, and the fingers cannot be manipulated by the insertion of a needle or other sharp instrument through the exterior of the housing.

Abstract: A combination seal and locking pin for a fire extinguisher handle or other device in which two members must be retained in fixed relation to each other, in which the seal portion comprises a housing, a shackle to be received in the housing in locking relation and a pull ring for breaking the seal. The locking pin is detachably mounted onto the seal in a relationship such that pulling on the pull ring pulls the pin out of engagement with the handle and breaks the seal. The pull pin may be removed from the broken seal and assembled onto a new seal.

Abstract: A seal for a pipe coupling such as is used to connect a gas meter to a gas supply line. The seal is made in two portions having integral fastening means for locking the two portions around the nut of a coupling. The fastening means include a pair of flexible legs on one portion of the seal to be engaged with a tongue on the other portion of the seal. The tongue is provided with an aperture which provides a vertical latch surface and two horizontal latch surfaces extending outwardly from the ends of the vertical latch surface.

Abstract: A combination security seal and identification tag holder for assembly onto the neck of a mail bag or the like, in which a shackle locking mechanism is provided with a housing having a locking plug which is inaccessible when the seal is assembled onto the bag, and is prevented by the gathered neck of the bag from moving out of the locking position. The assembly includes an integral tag receiving member positioned to protrude from the bag into a visible position when the seal is assembled.