No title available

• US 3,123,327 A
• Filed:
• Issued:
• Status: Expired due to Term

• Current Assignee: N/A
• Original Assignee: N/A
• Time in Patent Office: Days
• US Class Current: 244/134.00D
• CPC Class Codes: B64C 27/006 Safety devices
• CPC Class Codes: B64D 15/20 Means for detecting icing or initiating de-icing

Claims

1. FOR AIRCRAFT OF THE TYPE INCLUDING A SUSTAINING BLADE ROTATING ABOUT A HUB, A DEVICE RESPONSIVE TO THE ACCRETION OF ICE, COMPRISING A VERTICAL SUPPORT PIVOT HAVING A MOUNTING WHEREBY IT MAY BE SECURED TO SUCH BLADE, A PIVOTED HOUSING MOUNTED FOR ANGULAR MOVEMENT ABOUT THE VERTICAL PIVOT, STOPS LIMITING SUCH ANGULAR MOVEMENT TO LESS THAN 90 * AND ESTABLISHING AT THE ONE LIMIT A NORMAL POSITION AND AT THE OTHER AN ICE-ACCRETED POSITION, A TAPERING ICE-ACCRETING MEMBER PROJECTING FROM THE HOUSING AND NORMALLY PRESENTED FORWARD OF THE HUB, MASSES SUBJECT TO CENTRIFUGAL FORCES ATTENDING ROTATION ABOUT THE HUB, SAID MASSES INCLUDING THE HOUSING AND ITS ICE-ACCRETING MEMBER AND BEING POSITIONED AND WEIGHTED FOR CENTRIFUGAL BALANCE ABOUT THE PIVOT IN THE NORMAL POSITION IN THE ABSENCE OF ACCRETED ICE, A SWITCH HAVING A FIXED CONTACT ADJACENT TO THE LIMIT STOP FOR THE ICE-ACCRETED POSITION AND HAVING A MOVABLE CONTACT BORNE BY ANGULAR MOVEMENT OF THE HOUSING FROM THE NORMAL POSITION TO THE ICE-ACCRETED POSITION, A SOURCE OF ELECTRICITY, AND AN ELECTRICAL SYSTEM OPERATIVELY CONNECTED TO SAID SOURCE OF ELECTRICITY AND CONTROLLED BY THE SWITCH, TOGETHER FURTHER WITH A PRE-LOADING MASS PIVOTED ON AN AXIS PARALLEL TO THE VERTICAL SUPPORT PIVOT, THE PRE-LOADING MASS HAVING A FREE END BEARING AGAINST THE HOUSING AFT OF THE SUPPORT PIVOT, WHEREBY TO APPLY TO IT A TWISTING MOMENT TO OFFSET THE CENTRIFUGAL FORCE IMPOSED BY THE PRESENCE OF ICE ON THE ICE-ACCRETING MEMBER.