公开(公告)号：US5945903A

公开(公告)日：1999-08-31

申请号：US919243

申请日：1997-08-30

Applicant: Nagi Reddi Kanamatha Reddy ,  Robert Swensen ,  Thomas F. Draho ,  Michael Styrna

Inventor： Nagi Reddi Kanamatha Reddy ,  Robert Swensen ,  Thomas F. Draho ,  Michael Styrna

IPC: H01C1/14 ,  H01H85/041 ,  H01H85/20 ,  H01H85/02 ,  H01C7/10 ,  H01C7/18

CPC classification number: H01H85/0417 ,  H01C1/1406 ,  H01H85/201 ,  H01H2071/088 ,  H01H2085/0483

Abstract: A circuit protection device including a pair of terminals to be electrically connected into an electrical circuit, a pair of spaced current-carrying extensions of the terminals, and an initially low resistance current limiting device extending between the current-carrying extensions. The invention includes the feature that the current-limiting element including flexible conductive current-feeding arms having inner and outer end portions, the inner end portions thereof being electrically connected to the current-carrying extensions of the terminals. The outer end portions of the current-feeding arms are cantilevered and flexible relative to the inner end portions. The device further preferably includes a PTC current-limiting element sandwiched between the flexible outer end portions of the current-feeding arms. The PTC element includes a layer of a PTC material having conductive opposite faces sandwiched between the flexible outer end portions of the arms so that the PTC material carries current between the outer end portions of the current-carrying arms. The layer of PTC material reaches a given trip level at an elevated current, expanding suddenly and substantially to flex the outer end portions of the current-carrying arm.

Abstract translation: 一种电路保护装置，其包括一对电连接到电路中的端子，一对间隔开的端子的载流延伸部分以及在电流承载延伸部之间延伸的初始低电阻电流限制装置。 本发明的特征在于，限流元件包括具有内端部和外端部的柔性导电电流馈送臂，其内端部电连接到端子的通电延伸部。 电流馈送臂的外端部相对于内端部是悬臂的和柔性的。 该装置还优选地包括夹在电流馈送臂的柔性外端部之间的PTC限流元件。 PTC元件包括PTC材料层，其具有夹在臂的柔性外端部之间的导电相对面，使得PTC材料在载流臂的外端部之间承载电流。 PTC材料层在升高的电流下达到给定的跳闸水平，突然且基本上膨胀以使载流臂的外端部弯曲。

公开(公告)号：US5682130A

公开(公告)日：1997-10-28

申请号：US474331

申请日：1995-06-07

Applicant: Michael Styrna ,  Andrew Tomlinson

Inventor： Michael Styrna ,  Andrew Tomlinson

IPC: H01C1/14 ,  H01H85/041 ,  H01H85/20 ,  H01H85/02 ,  H01C7/10 ,  H01H85/52 ,  H01H85/62

CPC classification number: H01H85/0417 ,  H01C1/1406 ,  H01H85/201 ,  H01H85/2035 ,  H01H2071/088 ,  H01H2085/0483

Abstract: The invention is a circuit protection device comprising a first and a second female terminal. The device further comprises a first fuse clip in electrical contact with the first fuse terminal and a second fuse clip in electrical contact with the second fuse terminal. A positive temperature coefficient element, preferably planar, is positioned between and makes electrical contact with both the first fuse clip and the second fuse clip. In a first embodiment, at least one of the first and second fuse clips is spring-loaded, i.e., has an inherent resiliency. In this same embodiment, portions of the first and second fuse clips overlap, and the positive temperature coefficient element is secured between the overlapping portions of the first and second fuse clips. In the second of the two preferred embodiments, the first fuse clip, the second fuse clip, and the positive temperature coefficient element are generally coplanar.

Abstract translation: 本发明是一种包括第一和第二母端子的电路保护装置。 该装置还包括与第一熔丝端子电接触的第一熔丝夹和与第二熔丝端子电接触的第二熔丝夹。 正温度系数元件，优选是平面的，位于第一熔丝夹和第二熔丝夹之间并与之电接触。 在第一实施例中，第一和第二熔丝夹中的至少一个是弹簧加载的，即具有固有的弹性。 在该同一实施例中，第一和第二熔丝夹的部分重叠，并且正温度系数元件被固定在第一和第二熔丝夹的重叠部分之间。 在两个优选实施例的第二个中，第一熔丝夹，第二熔丝夹和正温度系数元件通常是共面的。