Automatic backwater valve

• US 2,062,423 A
• Filed: 07/23/1935
• Issued: 12/01/1936
• Est. Priority Date: 07/23/1935
• Status: Expired due to Term

• Current Assignee: Fred B. Mingus, Meyer, Walter R.
• Original Assignee: Fred B. Mingus, Meyer, Walter R.
• Inventors: Mingus, Fred B., Meyer, Walter R.
• Application Number:
  US02/032,792
• Time in Patent Office: 497 Days
• US Class Current: 137/448
• CPC Class Codes: E03F 5/042 Arrangements of means against overflow of water, backing-up from the drain
• CPC Class Codes: Y10T 137/7323 By float
• CPC Class Codes: Y10T 137/7381 Quick acting
• CPC Class Codes: Y10T 137/7413 Level adjustment or selection means
• CPC Class Codes: Y10T 137/7485 Pivoted valve

Claims