Communications: electrical – Land vehicle alarms or indicators – For trailer
Patent
1993-10-04
1996-05-07
Swarthout, Brent A.
Communications: electrical
Land vehicle alarms or indicators
For trailer
340573, 340604, 73307, 200 6104, 200 84R, G08B 2100
Patent
active
055150250
ABSTRACT:
A sensor includes a hollow tube having first and second ends; a cap secured at said first end; the second end being substantially open to allow fluid to enter the tube; a floatation element slidably arranged within said tube; an element at the second end for preventing the floatation element from leaving the tube; a contact switch arranged within the tube between the cap and the floatation element; and a fluid exhaust opening provided in the tube adjacent the contact switch. A method of using a boat trailer having a float sensor secured to the boat trailer at a location so that the float sensor activates an indication when the trailer is lowered into a body of water to a predetermined depth, comprises the steps of lowering the trailer into the body of water until the float sensor indicates that the trailer has been lowered to the predetermined depth; and performing at least one of the following two acts: removing a boat from the boat trailer; and securing a boat onto the trailer so that the boat can be removed from the water. The sensor has other applications including a motion or displacement detector for a swimming pool.
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Swarthout Brent A.
Tong Nina
Waterbug Systems, Inc.
LandOfFree
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