What is claimed is:
1. A tape guide, comprising a hub having a surface over which a tape passes and spaced apart parallel flanges extending out from the hub and a plurality of grooves in the surface of the hub, each groove having the same width and the grooves spaced apart from one another a distance measured from the center of one groove to the center of an adjacent groove, the distance between adjacent grooves 2.4 to 3.7 times greater than the width of each groove.
2. The tape guide of claim 1, wherein the distance between adjacent grooves is about 3.2 times greater than the width of each groove.
3. A tape guide, comprising a hub having a surface over which a tape passes and spaced apart parallel flanges extending out from the hub and a spiral groove in the surface of the hub, the groove having a width and a pitch such that adjacent turns of the groove are spaced apart a distance measured from the center of one turn to the center of an adjacent turn, the distance between adjacent turns 2.4 to 3.7 times greater than the width of the groove.
4. The tape guide of claim 1, wherein the distance between adjacent turns is about 3.2 times greater than the width of the groove.
5. A tape guide, comprising a hub having a surface over which the tape passes, spaced apart parallel flanges extending out from the hub and a plurality of grooves in the surface of the hub, each groove 0.30 mm to 0.38 mm wide and the grooves spaced apart from one another 0.90 mm to 1.12 mm as measured from the center of one groove to the center of an adjacent groove.
6. The tape guide of claim 5, wherein the grooves comprise concentric grooves about 0.35 mm wide and spaced apart nominally 1.12 mm as measured from the center of one groove to the center of adjacent groove.
7. A tape guide, comprising a hub having a surface over which the tape passes, spaced apart parallel flanges extending out from the hub and a plurality of concentric V shaped grooves in the surface of the hub, each groove 0.30 mm to 0.38 mm wide and not more than 0.50 mm deep, and the grooves spaced apart from one another 0.90 mm to 1.12 mm as measured from the center of one groove to the center of an adjacent groove.
8. The tape guide of claim 7, wherein the grooves comprise concentric grooves about 0.35 mm wide, 0.175 mm deep and spaced apart nominally 1.12 mm as measured from the center of one groove to the center of an adjacent groove.
9. A tape guide, comprising a hub having a surface over which the tape passes, spaced apart parallel flanges extending out from the hub and a spiral groove in the surface of the hub, the spiral groove 0.30 mm to 0.38 mm wide and having a pitch such that adjacent turns of the groove are spaced apart 0.90 mm to 1.12 mm as measured from the center of one turn to the center of an adjacent turn.
10. The tape guide of claim 9, wherein the groove comprises a spiral groove about 0.35 mm wide and having a pitch such that adjacent turns of the groove are spaced apart 1.12 mm as measured from the center of one turn to the center of an adjacent turn.
11. A tape guide, comprising a hub having a surface over which the tape passes, spaced apart parallel flanges extending out from the hub and a V shaped spiral groove, the spiral groove 0.30 mm to 0.38 mm wide and not more than 0.50 mm deep, and the spiral groove having a pitch such that adjacent turns of the groove are spaced apart 0.90 mm to 1.12 mm as measured from the center of one turn to the center of an adjacent turn.
12. The tape guide of claim 11, wherein the groove comprises a V shaped spiral groove about 0.35 mm wide and 0.175 mm deep, and the spiral groove having a pitch such that adjacent turns of the groove are spaced apart nominally 1.12 mm as measured from the center of one turn to the center of an adjacent turn.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A cooking pan with a temperature display, comprising a pan body and a handle, an extra bottom layer formed at the bottom of the pan body with a metallic plate sandwiched in between the bottom of the pan body and the extra bottom layer, a temperature sensor is placed inside the metallic plate, which is connected with the display unit located on the handle via connection wires.
2. The cooking pan with a temperature display as claimed in claim 1, wherein said metallic plate comprises an installation hole extending from a side of the metallic plate in the direction of thickness to the center of the metallic plate, said temperature sensor placed at the end of the installation hole, said connection wires are passed through the side wall of the extra bottom layer and connected to the display unit.
3. The cooking pan with a temperature display as claimed in claim 2, wherein said installation hole extends inward to a position of about \u2153 to \u2154 away from the center of the metallic plate.
4. The cooking pan with a temperature display as claimed in claim 3, wherein said installation hole is located below the handle.
5. The cooking pan with a temperature display as claimed in claim 1, wherein said temperature sensor and the connection wires are placed inside a protection tube extending to the handle along with the connection wires.
6. The cooking pan with a temperature display as claimed in claim 5, wherein said temperature sensor and its protection tube are in firm contact with the bottom of the pan body.
7. The cooking pan with a temperature display as claimed in claim 6, wherein said temperature sensor and its protection tube are in good thermal contact, and the protection tube, pan body and metallic plate are in good thermal contact also.
8. The cooking pan with a temperature display as claimed in claim 7, wherein said temperature sensor is high temperature sustainable, and said protection tube is a high temperature sustainable and impact proof metallic tube, temperature sensor and connection wires are electrically insulated from the protection tube.
9. The cooking pan with a temperature display as claimed in claim 8, wherein said metallic protection tube is sealed in itself, and the protection tube and the metallic plate are sealed therebetween; wherein the portion of the protection tube located inside the metallic plate has a smaller diameter, and the portion of the protection tube outside the metallic plate has a larger diameter.
10. The cooking pan with temperature display function as claimed in claim 1, wherein the display unit is located on the top surface of the handle, and said display unit may be either LCD digital display or LED display.