Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
271 words
A lighting bar including: an arm intended in use to be horizontal; first and second electric lamps supported from said arm proximate the opposite extremities thereof; said first electric lamp having, in operation, a beam of rectangular cross-section; said second electric lamp having, in operation, a beam of circular cross-section; a pole intended, in use, to be vertical; coupling means, said coupling means including a plate secured, in a horizontal position, to the upper end of said pole and having an opening therein, centrally thereof; a vertically disposed threaded shaft fixedly connected to said plate, passing thru said opening in said plate and extending above said pole, said arm having a vertical opening therethru to receive said shaft freely, for rotation of said arm about said shaft, said vertical opening in said arm being positioned off the longitudinal center of said arm whereby there is a greater distance from said first lamp to said vertical opening than there is from said second lamp to said vertical opening; a nut having internal threads sized and pitched to cooperate with said threaded shaft and positioned on said shaft on the opposite side of said arm from said plate, whereby said nut can be adjusted to cause said arm to forcefully engage said plate; said nut having a horizontally-disposed setting-pin therein; said first electric lamp being supported for rotation only in the horizontal plane but through 360° and said second electric lamp being supported for rotation through only 180° in the horizontal plane but is also rotatable in the vertical plane. and means for providing electrical energy to said first and second electric lamps.
Claim 2
Dependent Claim
271 words
A lighting bar including: an arm intended in use to be horizontal; first and second electric lamps supported from said arm proximate the opposite extremities thereof; said first electric lamp having, in operation, a beam of rectangular cross-section; said second electric lamp having, in operation, a beam of circular cross-section; a pole intended, in use, to be vertical; coupling means, said coupling means including a plate secured, in a horizontal position, to the upper end of said pole and having an opening therein, centrally thereof; a vertically disposed threaded shaft fixedly connected to said plate, passing thru said opening in said plate and extending above said pole, said arm having a vertical opening therethru to receive said shaft freely, for rotation of said arm about said shaft, said vertical opening in said arm being positioned off the longitudinal center of said arm whereby there is a greater distance from said first lamp to said vertical opening than there is from said second lamp to said vertical opening; a nut having internal threads sized and pitched to cooperate with said threaded shaft and positioned on said shaft on the opposite side of said arm from said plate, whereby said nut can be adjusted to cause said arm to forcefully engage said plate; said nut having a horizontally-disposed setting-pin therein; said first electric lamp being supported for rotation only in the horizontal plane but through 360° and said second electric lamp being supported for rotation through only 180° in the horizontal plane but is also rotatable in the vertical plane. and means for providing electrical energy to said first and second electric lamps.
Claim 3
Dependent Claim
23 words
Apparatus according to claim 1 which includes, in addition, mounting means permanently connected to said pole for mounting said pole on a truck.