Sampling scissors and method for using the same

Patent metadata

Field	Value
Publication number	US-10245738-B2
Application number	US-201514800587-A
Country	US
Kind code	B2
Filing date	Jul 15, 2015
Priority date	Mar 19, 2015
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

Embodiments of the present invention provide a pair of sampling scissors and a method for using the sampling scissors. With the sampling scissors and the method, a sample of a rubbing cloth for testing may be obtained in a single operation, and damage to the rubbing cloth during the sampling process is thus decreased, so that the rubbing cloth will meet the requirement of uniformity of rubbing alignment. The sampling scissors comprise a tray, a blade, a first hand grip and a second hand grip; wherein the tray is connected with the first hand grip and the blade is connected with the second hand grip, and the first hand grip is pivotably connected with the second hand grip through a central shaft; and wherein the blade comprises a first cutting edge disposed at edges of the blade, and a projection of the first cutting edge onto a bottom surface of the tray is a hollow and closed pattern and the first cutting edge is perpendicular to the bottom surface of the tray for shearing off a sample which is to be received in the tray. The sampling scissors according to embodiments of the present invention are used to sample the rubbing cloth.

First claim

What is claimed is:

1. A pair of sampling scissors comprising a tray, a blade, a first hand grip, a second hand grip, a first guide rail, a first slider and a first position fixing device;
wherein the tray is connected with the first hand grip and the blade is connected with the second hand grip, and the first hand grip is pivotably connected with the second hand grip through a central shaft;
wherein the blade comprises a first cutting edge disposed at edges of the blade, a projection of the first cutting edge onto a bottom surface of the tray is a hollow and closed pattern, the first cutting edge is perpendicular to the bottom surface of the tray for shearing off a sample, and the tray is configured to receive the sample;
wherein the first slider is disposed on the first guide rail, which is fixed to the second hand grip, and is fixed to the blade, and the blade is slidable along the length of the first guide rail through the first slider;
wherein the first position fixing device is constructed to fix the first slider to one of a plurality of positions on the first guide rail, and comprises a clip which is movable along the length of the first guide rail; and
wherein a first groove, extending along the length of the first guide rail, is disposed in the first guide rail, the first groove comprises a first opening extending along the length of the first guide rail and close to the first slider, a width of the first opening is smaller than a width of the first groove, the first slider has an integral structure that comprises a first slider main body, a travelling element and a first neck portion which is between the first slider main body and the travelling element, and a width of the travelling element is smaller than or equal to that of the first groove but larger than that of the first opening, the travelling element is in the first groove, the first slider main body is out of the first groove and the first neck portion is at the first opening, a width of the first slider main body is larger than that of the first groove, and the blade is fixed on a surface of the first slider main body facing away from the first opening.

2. The pair of sampling scissors of claim 1 , wherein, the tray comprises a second cutting edge which is perpendicular to the bottom surface of the tray and is able to cooperate with the first cutting edge to shear off the sample.

3. The pair of sampling scissors of claim 1 further comprising a second guide rail which is fixed to the first hand grip, wherein a second slider is disposed on the second guide rail and is fixed to the tray, thereby the tray is slidable along the second guide rail through the second slider.

4. The pair of sampling scissors of claim 3 , wherein a second groove is disposed in the second guide rail, the second groove comprises a second opening close to the second slider, a width of the second opening is smaller than a width of the second groove, and the second slider comprises a travelling element, and a width of the travelling element is smaller than or equal to that of the second groove but larger than that of the second opening.

5. The pair of sampling scissors of claim 3 , wherein scales for indicating positions of the blade and/or the tray are disposed on the first guide rail and/or the second guide rail respectively.

6. The pair of sampling scissors of claim 3 further comprising a second position fixing device for fixing a position of the second slider on the second guide rail.

7. The pair of sampling scissors of claim 1 , wherein the projection of the first cutting edge onto the bottom surface of the tray is a hollow quadrilateral.

8. The pair of sampling scissors of claim 2 , wherein the projection of the first cutting edge onto the bottom surface of the tray is a hollow quadrilateral.

9. The pair of sampling scissors of claim 7 , wherein the quadrilateral is a square having a side length of 7 cm.

10. The pair of sampling scissors of claim 1 , wherein the projection of the first cutting edge onto the bottom surface of the tray is a hollow circle.

11. The pair of sampling scissors of claim 2 , wherein the projection of the first cutting edge onto the bottom surface of the tray is a hollow circle.

12. A method for shearing off a sample using the pair of sampling scissors of claim 1 comprising steps of:
placing an object to be sampled between the tray and the blade;
gripping the first hand grip and the second hand grip to decrease a distance therebetween;
decreasing a distance between the tray and the blade as the distance between the first hand grip and the second hand grip decreases, the blade piercing through the object to be sampled and contacting the tray when a distance between the bottom surface of the tray and the first cutting edge is small enough;
obtaining the sample through a single shearing by the sampling scissors and receiving it in the tray.

13. The method of claim 12 , wherein the object to be sampled is a rubbing cloth for a rubbing process, a fabric, a plastic plate, a rubber or metal plate.

14. A method for shearing off a sample using the pair of sampling scissors of claim 1 comprising steps of:
placing an object to be sampled between the tray and the blade;
sliding the first slider on the first guide rail to position the blade in a position for shearing off the sample;
gripping the first hand grip and the second hand grip to decrease a distance therebetween;
decreasing a distance between the tray and the blade as the distance between the first hand grip and the second hand grip decreases, the blade piercing through the object to be sampled and contacting the tray when a distance between the bottom surface of the tray and the first cutting edge is small enough;
obtaining the sample through a single shearing by the sampling scissors and receiving it in the tray.

15. The method of claim 14 , wherein the object to be sampled is a rubbing cloth for a rubbing process, a fabric, a plastic plate, a rubber or metal plate.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Optoelectronics Technolgy Co Ltd
• Beijing Boe Optoelectronics Tech Co Ltd

Inventors

• Zhang Jie

Classifications

• B26B13/22 Primary

  combined with auxiliary implements, e.g. with cigar cutter, with manicure instrument (cigar cutters per se A24F13/24) · CPC title

• G02F1/133784 Primary

  by rubbing · CPC title

• G01N1/04

  in the solid state, e.g. by cutting · CPC title

• G02F1/1303

  Apparatus specially adapted to the manufacture of LCDs · CPC title

• B26B13/06

  characterised by the shape of the blades · CPC title