Heat exchanger tube
United States Patent D799012

Tamura, Keitaro (Hyogo, JP)
Fujii, Yasuyuki (Hyogo, JP)
Itsumi, Yoshio (Hyogo, JP)
Oyama, Hideto (Hyogo, JP)
Application Number:
Publication Date:
Filing Date:
Primary Class:
International Classes:
(IPC1-7): 2303
Field of Search:
D23/386, D23/330, D23/323, D23/314, D23/266, D23/328, D23/333, D23/335, D23/336, D23/337, D23/341, D23/352, D23/357, D23/370, D23/385, D23/397, D23/399, D23/400, D23/406, D23/411, D23/413, D23/499, D25/125, D13/179
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US Patent References:
D776801Heat exchanger tubeJanuary, 2017TamuraD23/330
D763804Plate for heat exchangerAugust, 2016SakamotoD13/179
D757662Plate for heat exchangerMay, 2016FujiiD13/179
D743657Hose for cleanerNovember, 2015KimD32/31
D611576HoseMarch, 2010TokunoD23/266
D522654Vascular tubingJune, 2006HoustonD24/155
20050189094Helical coil-on-tube heat exchangerSeptember, 2005Van Decker165/140
20050150640Double-tube apparatus for use in a heat exchanger and method of using the sameJuly, 2005Nadig165/141
20020124636Apparatus and method for isolating and measuring movement in metrology apparatusSeptember, 2002Massie73/105
6410852Continuously-threaded PVC electrical conduitJune, 2002Schimpf138/121
20020033035Apparatus and methods for forming internally and externally textured tubingMarch, 2002Zifferer72/96
D425184HoseMay, 2000LidgettD23/266
D419653HoseJanuary, 2000LidgettD23/266
D413657HoseSeptember, 1999LidgettD23/266
D407696Inner tube for use in a semiconductor wafer heat processing apparatusApril, 1999ShimazuD13/182
D376193Helically wound lock-seam tubeDecember, 1996LennartssonD23/266
D296355Corrugated pipeJune, 1988KanaoD23/266
D296356Corrugated pipeJune, 1988KanaoD23/266
4551140Tube for medical instruments and medical bag device having the sameNovember, 1985Shinohara138/118
4253519Enhancement for film condensation apparatusMarch, 1981Kun165/110
3534778FLEXIBLE CONDUITOctober, 1970Goecke138/122
D213828N/AApril, 1969BlakeD23/266
3154141Roughened heat exchanger tubeOctober, 1964Huet165/133
3004330Tubes for structural and fluid conducting purposes, and methods of making the sameOctober, 1961Wilkins138/115
2914833Paper tube for forming concrete columns and the like having an overlapped inner ply with a coating material thereonDecember, 1959Hart, Jr.138/145
2888043Multiple section paper tube and method of making sameMay, 1959Reid138/144
1803279CableApril, 1931Chase138/129
D052568N/AOctober, 1918Hallgreen138/122
D052569N/AOctober, 1918HallgreenD23/266
D052570N/AOctober, 1918HallgreenD23/266
D052571N/AOctober, 1918HallgreenD23/266
0164946N/AJune, 1875Stone138/129

Foreign References:
JP1400430November, 2010
Primary Examiner:
Nelson, Chase T.
Assistant Examiner:
Aman, Ania
Attorney, Agent or Firm:
Oblon, McClelland, Maier & Neustadt, L.L.P.

1. The ornamental design for a heat exchanger tube, as shown and described.


FIG. 1 is a front view of a heat exchanger tube, the opposite side being a mirror image of the side shown herein;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top view thereof, the opposite side being an identical image of the side shown herein;

FIG. 5 is an enlarged view of part 5-5 in FIG. 1 thereof;

FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 1; and,

FIG. 7 is an enlarged view of part 7-7 in FIG. 6 thereof.

In the drawings, the broken lines depict portions of the heat exchanger tube that are environmental subject matter only and form no part of the claimed design.

The broken lines on the ends of the heat exchanger tube in the drawings indicate that any portion of the article beyond what is shown forms no part of the claimed design.