Traction Sheave Warning for Helicopter Rescue Hoist Systems.

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Abstract:

A helicopter rescue hoist-traction sheave assembly including a hoist cable engaging sheave and first housing, a drive motor having a drive shaft mounting the sheave and a second housing mounting the motor and positioned in adjustable relation to the sheave housing, a rocker arm fixed to the motor-mounted housing, an alarm switch located near the rocker arm, and a torque compensating spring attached to, and normally retaining the rocker arm in a neutral position out of engagement with the switch when the drive motor is applying a normal amount of traction to the cable through the sheave and automatically moving the rocker arm to an engaged position with, and closing the switch in the event of a malfunction resulting in a substantial reduction in the motor-applied traction. Author

Author(s):
Schmitmeyer, Steven H. ; Strayer, James W.
Author Organization(s):
DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Descriptive Note:
Patent,
Supplementary Note:
Supersedes PAT-APPL-590 881-75, AD-D001 843.
Pagination:
0006

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Availability: This Government-owned Invention Available For U.s. Licensing And, Possibly, For Foreign Licensing. Copy Of Patent Available Commissioner Of Patents, Washington, D. C. 20231 $0.50.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-590 881, PATENT-4 005 852
 Subject Terms
Joint Capability Areas:
JCA_6.1.3_Switching and Routing; JCA_6.1.1_Wired Transmission; JCA_6.1_Information Transport; JCA_6_Net Centric
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Patents, *Helicopter hoists, *Warning systems, Sheaves(Drives), Rescue equipment, Indicator lights, Malfunctions, Electric switches
Field(s)/Group(s):
Helicopters, Escape, Rescue and Survival
Keyword(s):
PAT CL 73 116, Rocker arms
Report Date:
1977 Feb 01