摘要:
An impact and/or vibration absorbent material and articles, particularly a protective glove, making use of said material. An impact and/or vibration absorbent material of the present invention has at least two material layers. The individual layers of the impact and/or vibration absorbent material may be of the same material, or of different materials. Each material layer preferably contains a number of holes. The holes in one layer are located and arranged to be offset from the holes in an adjacent layer. The combination of inherent material properties and the inclusion and arrangement of holes renders such a material highly impact and/or vibration absorbent. When used in an impacting article, deflection of portions of one material layer into the holes in an adjacent material layer at impact further provides an enhanced transfer of impact force to an impacted object.
摘要:
A circuit breaker including a housing, separable contacts, a cradle rotatably mounted within the housing, an alarm switch mounted within the housing, and an interface lever disposed between the cradle and the alarm switch. The cradle is adapted to rotate about a first axis in a first direction when the circuit breaker moves to a tripped position in which the separable contacts are separated from one another. The alarm switch includes an actuation lever movable in an actuation direction, wherein movement of the actuation lever in the actuation direction causes the alarm switch to activate an alarm device electrically connected thereto. When the cradle rotates in the first direction, the cradle exerts a first force against the interface lever that causes the interface lever to exert a second force against the actuation lever that causes the actuation lever to move in the actuation direction.
摘要:
An impact and/or vibration absorbent material and protective articles making use of said material. An impact and/or vibration absorbent material of the present invention has at least two material layers. The individual layers of the impact and/or vibration absorbent material may be of different materials, or of the same material with the composition of the material of one layer adjusted to be of dissimilar hardness to an adjacent layer. Each material layer preferably contains a number of holes. The holes in one layer are located and arranged to be offset from the holes in an adjacent layer. The combination of material properties and the inclusion and arrangement of holes renders such a material highly impact and/or vibration absorbent. Through use of a protective article of the present invention, the effects of impact and/or vibration forces on a user of the protective article can be minimized.
摘要:
A trip mechanism having a hatchet plate disposed on a pivot pin assembly having a pivot pin member with at least three pivoting surfaces. First and second pivoting surfaces are located where the pivot pin member engages the supporting side plates. Thus, the pivot pin assembly may rotate in the traditional manner, i.e., both the hatchet plate and the pivot pin assembly rotate between the side plates. An additional pivoting surface is located where the hatchet plate engages the pivot pin assembly.
摘要:
An impact and/or vibration absorbent material and protective articles making use of said material. An impact and/or vibration absorbent material of the present invention has at least two material layers. The individual layers of the impact and/or vibration absorbent material may be of the same material, or of different materials. Each material layer preferably contains a number of holes. The holes in one layer are located and arranged to be offset from the holes in an adjacent layer. The combination of inherent material properties and the inclusion and arrangement of holes renders such a material highly impact and/or vibration absorbent. Through use of a protective article of the present invention, the effects of impact and/or vibration forces on a user of the protective article can be minimized.
摘要:
Crystal habit modifiers (CHM) are provided to ameliorate deposit-related concerns in nuclear plant systems. The principal targets for utilization of crystal habit modifiers are Pressure Water Reactor (PWR) primary-side fuel rod crud and secondary-side steam generator deposits and Boiling Water Reactor (BWR) coolant system deposits.
摘要:
A testing apparatus and method for determining the impact an/or vibration absorbent characteristics of an impact and/or vibration absorbent material. The apparatus includes a base having upwardly extending vertical guide rods. A sample plate is maintained in a position above the base by one or more springs of known spring rate. A weight is adapted to move vertically along the guide rods and to impact the sample plate and a sample of impact and/or vibration absorbent material when dropped from a raised position. The impact of the weight causes a downward vertical displacement of the sample plate, which displacement is measured by a moveable indicator. This displacement can be used, along with the total spring rate provided by the spring(s), to calculate a pass-through impact force. The pass-through impact force can then be subtracted from the impact force generated by the falling weight to determine the amount of impact force absorbed by the impact and/or vibration absorbent material.