CABLE INSTALLATION APPARATUS
First Claim
1. A device for detecting a flow of air from an exit end of a tube fed into an entrance end of the tube, comprising:
- a bore having a first bore section with a first size bore size and a second bore section with a second bore size;
an obstruction located within the bore between the first bore section and the second bore section, the obstruction configured to obstruct air flowing from the exit end of the tube to the second bore section via the first bore section; and
fixing means to fix the device to the tube so that the bore communicates with the exit end of the tube,wherein in use, an air pressure sensor is used to compare air pressure within the first bore section and air pressure within the second bore section, so that a pressure differential is indicative of an air flow within the bore.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for detecting a flow of air from an exit end of a tube fed into an entrance end of the tube, including a bore having a first section with a first size bore size and a second section with a second bore size, an obstruction located within the bore between the first section and the second section, the obstruction configured to obstruct air flowing from the first section to the second section, and fixing means to fix the device to the tube so that the bore communicates with the exit end of the tube, wherein in use, an air pressure sensor is used to compare air pressure within the first bore section and air pressure within the second bore section, so that a pressure differential is indicative of an air flow within the bore.
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Citations
15 Claims
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1. A device for detecting a flow of air from an exit end of a tube fed into an entrance end of the tube, comprising:
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a bore having a first bore section with a first size bore size and a second bore section with a second bore size; an obstruction located within the bore between the first bore section and the second bore section, the obstruction configured to obstruct air flowing from the exit end of the tube to the second bore section via the first bore section; and fixing means to fix the device to the tube so that the bore communicates with the exit end of the tube, wherein in use, an air pressure sensor is used to compare air pressure within the first bore section and air pressure within the second bore section, so that a pressure differential is indicative of an air flow within the bore. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of detecting a flow of air from an exit end of a tube, comprising:
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fixing a device to the tube so that a bore within the device communicates with the exit end of the tube, the device comprising a bore having a first bore section with a first size bore size and a second bore section with a second bore size, an obstruction located within the bore between the first bore section and the second bore section, the obstruction configured to obstruct air flowing from the exit end of the tube to the second bore section via the first bore section, and fixing means to fix the device to the tube so that the bore communicates with the exit end of the tube, wherein in use, an air pressure sensor is used to compare air pressure within the first bore section and air pressure within the second bore section, so that a pressure differential is indicative of an air flow within the bore; feeding air into an entrance end of the tube; obstructing air flowing from the exit end of the tube to a second bore section of the device via a first bore section of the device; comparing air pressure levels within the first bore section and the second bore section; and signalling a pressure differential from the comparison as being indicative of an air flow within the bore. - View Dependent Claims (14, 15)
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Specification