Magnetic detection appartaus with plastic housing and sound-transmissive handle
First Claim
1. Magnetic detection apparatus comprising a housing having a first integral unit and a second integral unit, the first unit including a tube with a plate at one end thereof transverse to the length of the tube and having a hole therein aligned with the tube, the second unit including a cover, one end of which is closed by said plate to form a casing and the opposite end of which has a handle for grasping the apparatus, means for fastening said first unit to said second unit, a sensor assembly including a pair of spaced magnetic sensors mounted on an elongated support in said tube, and an electrical unit mounted in said casing and electrically and mechanically connected to said sensor assembly via the hole in said plate, said support having means for extending the support rigidly from said electrical unit as a cantilever so that said electrical unit and said sensor assembly form an integral apparatus capable of being assembled with said housing unitarily, said electrical unit comprising means cooperable with said sensors to detect magnetic objects and having means for indicating the detection of magnetic objects.
4 Assignments
0 Petitions
Accused Products
Abstract
A magnetic detection apparatus (magnetic locator) comprises a housing constituted by a first integral molded plastic unit and a second integral molded plastic unit that are joined. The first unit has a tube with a plate at one end thereof transverse to the length of the tube, the plate having an opening through which a magnetic sensor assembly is inserted into the tube. The second unit has a cover open at one end and having a tubular handle at the opposite end, by which the user may grasp the apparatus. Attachment of the cover to the plate closes the open end of the cover to provide a casing. Magnetic sensors are mounted on a channel or angle structural member that is rigidly attached to the chassis of an electrical unit mounted in the casing. Sound from a loudspeaker mounted on the chassis is transmitted through the handle to the exterior of the apparatus. The chassis also supports a meter that is visible through an opening in an end wall of the cover adjacent to the handle.
91 Citations
14 Claims
- 1. Magnetic detection apparatus comprising a housing having a first integral unit and a second integral unit, the first unit including a tube with a plate at one end thereof transverse to the length of the tube and having a hole therein aligned with the tube, the second unit including a cover, one end of which is closed by said plate to form a casing and the opposite end of which has a handle for grasping the apparatus, means for fastening said first unit to said second unit, a sensor assembly including a pair of spaced magnetic sensors mounted on an elongated support in said tube, and an electrical unit mounted in said casing and electrically and mechanically connected to said sensor assembly via the hole in said plate, said support having means for extending the support rigidly from said electrical unit as a cantilever so that said electrical unit and said sensor assembly form an integral apparatus capable of being assembled with said housing unitarily, said electrical unit comprising means cooperable with said sensors to detect magnetic objects and having means for indicating the detection of magnetic objects.
- 13. Magnetic detection apparatus comprising a housing having a first integral unit and a second integral unit, the first unit including a tube with a plate at one end thereof transverse to the length of the tube and having a hole therein aligned with the tube, the second unit including a cover, one end of which is closed by said plate to form a casing and the opposite end of which has a handle for grasping the apparatus, means for fastening said first unit to said second unit, a sensor assembly including a pair of spaced magnetic sensors mounted on an elongated support in said tube, and an electrical unit mounted in said casing and electrically and mechanically connected to said sensor assembly via the hole in said plate, said electrical unit comprising means cooperable with said sensors to detect magnetic objects and having means for indicating the detection of magnetic objects, wherein said indicating means comprises an electro-acoustic transducer, and said handle is a tube providing a path for the transmission of sound from said transducer to the exterior of said apparatus.
Specification