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AIR SPACE VEHICLE SERVICING APPARATUS

  • US 3,814,211 A
  • Filed: 03/01/1972
  • Issued: 06/04/1974
  • Est. Priority Date: 03/01/1972
  • Status: Expired due to Term
First Claim
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1. In apparatus for handling a load, an overhead support, a multi-section vertically oriented extensible and contractable mast having its upper end connected to said overhead support and a load support at its lower end, a hoist means including a rotatable drum member connected to said overhead support and a flexible member operatively connected to said rotatable member and said load support for raising and lowering said load support, a rotatable member separate from said hoist means having a flexible member connected thereto, said members being operatively connected to said overhead support and to said load support, means separate from said hoist means biasing said rotatable member in the direction to maintain said flexible member taut, means separate from said hoist means for selectively preventing rotation of said rotatable member, and means for operating said last-named means to prevent rotation of said rotatable member upon the existence of a predetermined condition of said apparatus.

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