3817472

Information

• Patent Grant
• 3817472

• References
• Source

• Patent Number

  3,817,472

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1974
  50 years ago

• CPC

  • B65H75/48 - Automatic restoring devices
  • B63B35/816 - Connection of the tow to the boat; using winches
  • F03G1/00 - Spring-motor
  • B65H2403/481 - Planetary
  • B65H2701/35 - Ropes, lines
  • F03G2730/01 - Spring motors with spiral springs
  • Y10S242/904 - Water ski reel

• US Classifications

  • 242 - Winding, tensioning, or guiding
  • 185 - Motors: spring, weight, or animal powered