| 摘要 |
1513263 Tubular filter BRUNSWICK CORP 29 April 1975 [29 April 1974 23 April 1975] 43631/75 Divided out of 1513261 Heading BID [Also in Division B3] A filter is formed by a tubular core 10X about which a diamond pattern of fibre rovings 1000 is wound, the core having a helically extending raised seam 10D whose height is greater than the wall thickness of the tube. The seam may have a smooth or serrated surface, and has a height of between 1/ 32 " and <SP>1</SP>/ 6 ". The core has a diameter of between <SP>5</SP>/ 8 " and 3<SP>1</SP>/ 2 " and a wall thickness of between 0.005" and 0.030". The roving may be of cotton, glass, nylon, rayon or polyester, and the tube of stainless steel, medium carbon steel or tin steel. |
