公开(公告)号：US3881759A

公开(公告)日：1975-05-06

申请号：US32017573

申请日：1973-01-02

Applicant: STOFFEL SEALS CORP

Inventor： FUEHRER CHARLES

IPC: F16B21/07 ,  G09F3/03 ,  B65D33/16 ,  B65D33/34

CPC classification number: F16B21/071 ,  G09F3/0352 ,  Y10T292/499

Abstract: An all plastic seal in which the socket receiving the locking head of a strap connected to the seal body is provided with a housing open at both ends. The locking head is inserted into one end of the housing into locking engagement with resilient locking fingers. The tip of the locking head is tapered in a single plane which intersects the longitudinal centerline of the opening in the housing forming the socket. A stop shoulder is provided in a recessed part of the housing for engaging a corresponding stop member on the locking head to prevent inward movement of the locking head beyond the distance necessary to engage the locking fingers. The housing may also be provided with inwardly projecting flute-like projections for minimizing the freedom of movement of the locking head in its locked condition in a direction transverse to the longitudinal centerline of the housing and socket structure. Weakened portion may be provided immediately adjacent the tapered end surface of the locking head, immediately adjacent the shoulder on the locking head engaging with the locking fingers, and in the strap or tie member immediately adjacent the stop member. Each of these weakened places serves as an intentional breaking section for indicating unauthorized unlocking of the seal. A weakened portion in the form of a transverse bore adjacent the tapered surface of the locking head serves to cause expansion of the locking head in response to excess axial forces on said tapered surface. The end of the socket housing which accepts the locking head is conically shaped on the outside and thin walled at the extreme end of the housing to preclude excessive backing forces being applied with no visible signs of tampering when the head is axially forced.

Abstract translation: 所有塑料密封件，其中容纳连接到密封体的带的锁定头的插座设置有在两端敞开的壳体。 锁定头插入壳体的一端，与弹性锁定指状件锁定接合。 锁定头的尖端在与形成插座的壳体中的开口的纵向中心线相交的单个平面中渐缩。 在壳体的凹部中设置有止动肩部，用于与锁定头上的对应的止动构件接合，以防止锁定头的向内移动超过与锁定手指接合所需的距离。 壳体还可以设置有向内突出的凹槽状突起，用于使锁定头在其锁定状态下的横向于壳体和插座结构的纵向中心线的方向的移动自由度最小化。 弱化部分可以紧邻锁定头的锥形端表面，紧邻锁定头上的肩部与锁定指状物接合，并且紧邻紧固件的带或连接件中。 这些弱化的地方中的每一个都作为用于指示未经许可的密封解锁的故意断裂部分。 邻近锁定头的锥形表面的横向孔形式的弱化部分用于响应于所述锥形表面上的过大的轴向力而引起锁定头的膨胀。 接纳锁定头的插座壳体的端部在外部成锥形，并且在壳体的最末端被薄壁化，以防止当头部被轴向受力时施加过多的背衬力而没有可见的篡改标志。