5 results about "Tape measure" patented technology

A hanging tapeline includes tapeline noumenon. Its characteristic lies in one side of the tapeline noumenon has buckle and belt clip, and the buckle has crown ,cavity formed between the crown and tapeline noumenon ,a roughly long and narrow shaped opening slot is set in she crown ,there is a pair of lugs. Corresponding to the said opening slot in the center of belt clip, the lugs fix to the buckle after inserting into the opening slot and rotating malposition. The invention can ensure the man-portable tapeline fixing style, when it needs to use the tapeline ,it only needs to rotate stated angle according to a direction to take down the tapeline from waist .And fit suitable lugs and opening slots ,the belt clip can be changes at any time.

The invention relates to a distribution automation system ground fault location method based on a traveling wave measure and transient zero-module reactive power directions. The method comprises the steps that firstly which feeder a ground fault is located on is determined by means of the small current line selection method of the traveling wave measure; secondly, based on the transient zero-module reactive power flow directions, a ground fault point is localized on a fault feeder, wherein on the feeder where the ground fault is located, the transient zero-module reactive power flow directions of any two adjacent feeder terminal units (FTUs) are monitored, if the product of the transient zero-module reactive power flow directions of some two adjacent feeder terminal units (FTUs) is negative, it is explained that the ground fault is located between the two adjacent feeder terminal units (FTUs), and if the product of the transient zero-module reactive power flow directions of some two adjacent feeder terminal units (FTUs) is positive, it is explained that no ground fault exists between the two adjacent feeder terminal units (FTUs). By means of the method, the ground fault is accurately localized, and which two feeder terminal units (FTUs) the ground fault is located between is determined, and good sensitivity is achieved to a high-resistance ground fault.

The invention aims to solve the problem that in the prior art, the adhesive tape running speed and the slip detection are inaccurate, and provides a voltage type adhesive tape running speed and slip detection device and a detection method. The device is composed of a fixing column, a tension spring, a movable arm, a transmission shaft, a passive friction wheel and a voltage type detection unit, wherein the fixing column is fixedly connected to a machine frame of an adhesive tape machine, the middle of the fixing column is hinged to one end of the movable arm, one end of the tension spring is fixed to the lower portion of the fixing column, the other end of the tension spring is fixed to the middle of the movable arm, the passive friction wheel is connected to the other end of the movable arm through the transmission shaft, the passive friction wheel is in frictional contact with the inner surface of an adhesive tape, the voltage type detection unit is fixedly connected to the movable arm, and is fixedly connected with one end of the transmission shaft. The device has the advantages that the speed of the adhesive tape is directly measured, the influence of slipping between a rollerand the adhesive tape on the speed of the adhesive tape is avoided, and the speed of the adhesive tape measured by the device is true and reliable.

The invention relates to a method for measuring the porosity of a sizing material by utilizing a scanner. The method comprises the following steps: firstly, measuring the weight of a tyre crown by using a calibrated electric platform scale, and recording, measuring the length of the tyre crown by using a tape, and recording; secondly, measuring and then transversely cutting out a tyre crown with the length of 100-200mm from the middle of the tyre crown by using a blade; thirdly, putting the cut-out tyre crown into the scanner and scanning cross section, to obtain the cross section area of the to-be-measured tyre crown; fourthly obtaining the porosity according to a weight calculation method, wherein the calculation formula of the weight calculation method is as follows: porosity equal to (theoretical weight subtracting practical weight)/theoretical weight, wherein the theoretical weight is equal to practically measured cross section area*tyre crown length*sizing material density. The porosity of the sizing material is measured by utilizing an offline/online scanner, the measured data is high in reliability, the data research value is higher, the measurement method is simple, practical and convenient, fewer in artificial interference factors, good in application prospects, and is a pioneer of company industry.

The invention provides an electronic device, and the electronic device comprises a device housing, an operation interface, a label tape, and an authentication tag. The operation interface is disposed in the device housing, and the label tape is disposed in the device housing. When the label tag is in a state of accommodation, the label tape is accommodated in the device housing; when the label tape is in a state of extension, the label tape is pulled out from the device housing. The authentication tag is pasted on the label tape. The electronic device provided by the invention can maintain the beauty of the appearance, and improves the industry competitiveness. Moreover, the pasting position of the authentication tag can be arranged freely, thereby enabling the pasting of the authentication tag to be easy and time-saving.