会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Circuit protection devices comprising PTC elements
    • 包括PTC元件的电路保护装置
    • US4329726A
    • 1982-05-11
    • US98712
    • 1979-11-30
    • Lee M. MiddlemanJoseph H. EvansDonald F. Pettengill
    • Lee M. MiddlemanJoseph H. EvansDonald F. Pettengill
    • H01C7/02H02H9/02
    • H01C7/027
    • Circuit protection devices comprising PTC elements, and circuits containing such devices. The devices, which are particularly useful in circuits carrying a steady state current of 0.5 amp or more, can protect the circuit against excessive current, e.g. as a result of a short or a voltage surge, or against excessive temperature, or both. The PTC element is composed of a material, preferably a conductive polymer, having a resistivity less than 10 ohm. cm in the normal operating condition of the circuit, and the device comprises electrodes such that current flows through the PTC element over an area of equivalent diameter d with an average path length t such that d/t is at least 2. The circuit has a normal operating condition in which the device has a low resistance and is in stable thermal equilibrium with its surroundings; however, when a fault condition occurs, the device generates heat by I.sup.2 R heating at a rate which exceeds the rate at which heat can be lost from the device, thus causing the temperature and resistance of the device to rise until the device reaches a new, high temperature, stable thermal equilibrium state. In order to ensure that the circuit current is reduced to a sufficiently low level, the ratio of (a) the power in the circuit in the normal operating condition to (b) the power in the circuit when the device is in the high temperature equilibrium state, is at least 8, preferably at least 40.
    • 包括PTC元件的电路保护装置和包含这种装置的电路。 特别适用于承载0.5安培或以上稳态电流的电路中的器件可以保护电路免受过电流的影响, 由于短路或电压浪涌,或过高的温度,或两者兼而有之。 PTC元件由电阻率小于10欧姆的材料,优选导电聚合物组成。 cm,并且该器件包括电极,使得电流在等效直径d的区域上流过平均路径长度t使得d / t至少为2的电流。电路具有 正常工作状态,其中该装置具有低电阻并且与其周围环境处于稳定的热平衡状态; 然而,当故障发生时,器件通过I2R加热产生的热量超过能够从器件中散热的速率,从而使器件的温度和电阻升高直到器件达到新的, 高温,稳定的热平衡状态。 为了确保电路电流降低到足够低的电平,(a)在正常工作状态下电路中的功率与(b)当器件处于高温平衡时电路中的功率之比 状态为至少8,优选至少40。
    • 4. 发明授权
    • Circuit protection devices comprising PTC elements
    • 包括PTC元件的电路保护装置
    • US4238812A
    • 1980-12-09
    • US965344
    • 1978-12-01
    • Lee M. MiddlemanJoseph H. EvansDonald F. Pettengill
    • Lee M. MiddlemanJoseph H. EvansDonald F. Pettengill
    • H05B3/00G05D23/24G05F1/10H01C7/02H02H9/02H05B3/14H02H5/04
    • A01K63/065H01C7/027
    • Circuit protection devices comprising PTC elements, and circuits containing such devices. The devices, which are particularly useful in circuits carrying a steady state current of 0.5 amp or more, can protect the circuit against excessive current, e.g. as a result of a short or a voltage surge, or against excessive temperature, or both. The PTC element is composed of a material, preferably a conductive polymer, having a resistivity less than 10 ohm. cm in the normal operating condition of the circuit, and the device comprises electrodes such that current flows through the PTC element over an area of equivalent diameter d with an average path length t such that d/t is at least 2. The circuit has a normal operating condition in which the device has a low resistance and is in stable thermal equilibrium with its surroundings; however, when a fault condition occurs, the device generates heat by I.sup.2 R heating at a rate which exceeds the rate at which heat can be lost from the device, thus causing the temperature and resistance of the device to rise until the device reaches a new, high temperature, stable thermal equilibrium state. In order to ensure that the circuit current is reduced to a sufficiently low level, the ratio of (a) the power in the circuit in the normal operating condition to (b) the power in the circuit when the device is in the high temperature equilibrium state, is at least 10, preferably at least 40.
    • 包括PTC元件的电路保护装置和包含这种装置的电路。 特别适用于承载0.5安培或以上稳态电流的电路中的器件可以保护电路免受过电流的影响, 由于短路或电压浪涌,或过高的温度,或两者兼而有之。 PTC元件由电阻率小于10欧姆的材料,优选导电聚合物组成。 cm,并且该器件包括电极,使得电流在等效直径d的区域上流过平均路径长度t使得d / t至少为2的电流。电路具有 正常工作状态,其中该装置具有低电阻并且与其周围环境处于稳定的热平衡状态; 然而,当故障发生时,器件通过I2R加热产生的热量超过能够从器件中散热的速率,从而使器件的温度和电阻升高直到器件达到新的, 高温,稳定的热平衡状态。 为了确保电路电流降低到足够低的电平,(a)在正常工作状态下电路中的功率与(b)当器件处于高温平衡时电路中的功率之比 状态为至少10,优选至少40。
    • 5. 发明授权
    • Cleaning and lubricating system for fusing apparatus
    • 定影设备清洗和润滑系统
    • US3996888A
    • 1976-12-14
    • US489709
    • 1974-07-18
    • Clyde A. LofdahlJoseph H. EvansDave D. Nyberg
    • Clyde A. LofdahlJoseph H. EvansDave D. Nyberg
    • G03G15/20B05C1/10
    • G03G15/2025
    • An apparatus for lubricating and/or cleaning a heated fuser roller in a heat-pressure fusing system for electrophotographic copying. The apparatus includes a lubricating and/or cleaning means in contact with the heated fuser roll, the means including a cross-linked polymeric material on its outer surface. The polymeric material may have a leachable lubricating material dispersed therein, for controlled lubrication of the fuser roller. After depletion of the lubricating material, the cross-linked polymeric material then functions to remove and collect the toner particles from the surface of the toner fuser roller. The apparatus is preferably mounted in contact with the fuser roller by a means which permits easy removal and replacement in the field, after the lubricant has been depleted or the polymeric material has become saturated with toner particles.
    • 一种用于在用于电子照相复印的热压定影系统中润滑和/或清洁加热的定影辊的装置。 该装置包括与加热的定影辊接触的润滑和/或清洁装置,该装置在其外表面上包括交联聚合材料。 聚合物材料可以具有分散在其中的可浸出的润滑材料,用于定影辊的受控润滑。 在润滑材料消耗之后,交联的聚合材料然后用于从调色剂定影辊的表面去除和收集调色剂颗粒。 该装置优选通过在润滑剂已经耗尽或者聚合材料已经被调色剂颗粒饱和之后容易地在现场中移除和更换的装置安装成与定影辊接触。
    • 6. 发明授权
    • Heat recoverable articles and methods therefor
    • 热回收制品及其方法
    • US3988399A
    • 1976-10-26
    • US477657
    • 1974-06-10
    • Joseph H. Evans
    • Joseph H. Evans
    • B29C61/00B29C61/06B29C61/10B29D7/00F16L47/22B32B3/04
    • F16L47/22B29C61/003B29C61/06B29C61/10B29D7/00H02G3/0487
    • Described herein are articles which are heat recoverable in involute fashion to an overlapping, generally cylindrical configuration and which are useful as wrap-around sleeves for wires, cables, cable splices and the like. Also described are articles initially heat recoverable to an elongate S-shaped configuration, which latter can be wrapped about an elongate substrate, the edge portions thereof interlocked, and heat recovered to form a protective closure. The articles of the invention comprise a molecularly oriented unitary polymeric layer which has been differentially annealed while restrained against dimensional change and cross-linked to provide an anisotropic gradient from a first to a second primary face of the layer through the thickness thereof. Subsequently, when the article is heated to recovery temperature, regions of high anisotropy adjacent one primary face of the layer shrink. Because of the annealing process, regions adjacent the opposite primary face of the layer tend to resist linear shrinkage, whereupon the article heat recovers in involute fashion to form a wrap-around sleeve.This is a division of application Ser. No. 130,730, filed April 2, 1971, now U.S. Pat. No. 3,847,721.
    • 这里描述的是可以渐开线方式热回收到重叠的大致圆柱形构造并且可用作电线,电缆,电缆接头等的环绕套管的制品。 还描述了最初可以恢复到细长S形构造的制品,后者可以围绕细长衬底缠绕,其边缘部分互锁,并被热回收以形成保护性封闭物。 本发明的制品包括分子取向的单一聚合物层,其已被差异退火,同时被抑制尺寸变化和交联,从而提供从该层的第一主面到第二主面通过其厚度的各向异性梯度。 随后,当制品被加热到恢复温度时,与层的一个主面相邻的各向异性高的区域收缩。 由于退火过程,邻近层的相对主面的区域倾向于抵抗线性收缩,于是制品热成型以渐开线方式回收以形成环绕套管。