Asphalt heater
First Claim
Patent Images
1. A tongue jack for a trailer comprising:
- a rotatable collar fixed to a tongue of a trailer;
a wheel attached to the rotatable collar such that the wheel is contactable with the ground and supports the trailer when in contact with the ground;
means for raising and lowering the wheel;
a motor operationally connected to the wheel; and
means to control speed and direction of the motor.
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Accused Products
Abstract
Disclosed is a powered tongue jack for maneuvering trailers and a trailer and tongue jack combination including an asphalt heater.
12 Citations
15 Claims
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1. A tongue jack for a trailer comprising:
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a rotatable collar fixed to a tongue of a trailer;
a wheel attached to the rotatable collar such that the wheel is contactable with the ground and supports the trailer when in contact with the ground;
means for raising and lowering the wheel;
a motor operationally connected to the wheel; and
means to control speed and direction of the motor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tongue jack and trailer comprising:
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a rotatable collar fixed to a tongue of the trailer;
a wheel attached to the rotatable collar such that the wheel is contactable with the ground and supports the trailer when in contact with the ground;
means for raising and lowering the wheel;
a motor operationally connected to the wheel; and
means to control speed and direction of the motor; and
further comprising;
an asphalt heater operationally connected to the trailer, the heater comprising;
a housing having an upper chamber and a lower chamber;
a gas-permeable refractory material disposed in the housing to define a closed upper chamber and an open-ended lower chamber;
a fuel line for introducing a combustible fuel-air mixture into the upper chamber;
a venturi disposed between the fuel line and the upper chamber; and
an igniter disposed in the lower chamber, whereby fuel introduced into the upper chamber diffuses through the gas-permeable refractory material and into the lower chamber. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification