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John Mohlengraft Phones & Addresses

  • Twin Peaks, CA
  • Surprise, AZ
  • 2344 Naples Ave, Upland, CA 91784
  • 1488 Upland Hills Dr, Upland, CA 91786
  • Buckeye, AZ
  • Rancho Cucamonga, CA
  • Corona, CA
  • PO Box 413, Twin Peaks, CA 92391

Publications

Us Patents

Manhole Cover Tool

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US Patent:
54623855, Oct 31, 1995
Filed:
Dec 19, 1990
Appl. No.:
7/629914
Inventors:
John S. Mohlengraft - Upland CA
Assignee:
GTE California Incorporated - Thousand Oaks CA
International Classification:
E02D 2914
B66F 1100
B66F 300
US Classification:
404 25
Abstract:
A hand-operated tool for removing and replacing a wide variety of different manhole covers is disclosed. The tool includes a handle which extends upward from slip-resistant feet. A collar with forward extending ears attaches to the lower, central region of the handle. An S-hook is positioned within the ears so that its hook extends downward and frontward, and a clevis is positioned outside the ears. The S-hook, clevis, and ears are all bolted together. One end of a chain attaches to the clevis, and another end of the chain attaches to a link of an elongated link-up unit. The link-up unit's link is dimensioned for snug, but hand-removable, attachment to the S-hook. The snug attachment resists rotation between the link-up unit and the S-hook. A hook pivotably couples to the link-up unit at an opposing end from the link-up unit's link. The hook is coupled so that is can pivot up and down only, and cannot freely rotate around the general direction of elongation of the link-up unit.
John S Mohlengraft from Twin Peaks, CA Get Report