Extensible Rod Sections Patents (Class 33/296)
  • Patent number: 4240208
    Abstract: A telescoping surveying rod carries on its upper end a laser beam sensor which reacts to a rotating laser beam of conventional type located at a distance. The sensor preferably has a vertical, triangular cross-section piece which supports on each face three solar cells, each cell emitting a signal when the beam strikes it, depending upon whether the sensor is at above or below level. The sensor is actuated throughout 360.degree. and hence need not be pointed at the beam source. An eye level readout device on the lowermost rod section has three lights which are illuminated depending upon which cell is energized. The rod is raised or lowered until the center light is illuminated, whereupon the rod marking indicates the distance below beam level of the foot of the rod.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: December 23, 1980
    Assignee: John V. Pehrson
    Inventor: Marie S. Pehrson
  • Patent number: 4228590
    Abstract: A leveling pole comprising telescopically slidable inner liners, wherein an outermost liner is provided detachably with a case for receiving a tape-line connected to an innermost liner through the outermost liner and each inner liner except for the innermost liner, the tape-line being bilaterally graduated in selected two kinds of linear measure systems to alternatively indicate one of the graduations corresponding to the movement of each inner liner to and from the outermost liner through an aperture which is formed on the case and covered with a shutter slidable across the aperture. The invention further involves the art wherein a hook is detachably mounted onto the foremost end of the innermost liner thereby making it possible to measure the height of an object exceeding the total length of the pole.
    Type: Grant
    Filed: March 16, 1979
    Date of Patent: October 21, 1980
    Inventor: Shinhichi Kimura
  • Patent number: 4192076
    Abstract: The device of the present invention comprises a tripod having a platform at its top and three legs pivotally connected at their upper ends to the platform member and diverging downwardly and outwardly therefrom. Three connecting members interconnect the lower ends of the tripod legs. A stake holding means is provided on the tripod and includes an upper bracket connected to the tripod platform and a lower bracket connected to one of the connecting members. The upper and lower brackets each have an opening therein, and the openings of the two brackets are vertically registered for receiving a surveyor's stake.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: March 11, 1980
    Inventor: George W. Hall
  • Patent number: 4060909
    Abstract: A telescoping surveying rod is disclosed having an adjustable support member to permit direct reading from a reference elevation such as zero elevation or from a one hundred foot elevation when the rod is used as a standard rod for elevation or for excavation; the rod includes dual scales lineated for tenths of a foot and for inches to permit direct reading of either without necessitating any conversion.
    Type: Grant
    Filed: March 2, 1976
    Date of Patent: December 6, 1977
    Inventors: Eugene C. Collins, Stephen E. Collins, David N. Collins
  • Patent number: 4031633
    Abstract: The present invention relates to a scale for use in measuring and straightening damaged vehicles in a so-called vehicle alignment apparatus, especially when the measuring is made by using a laser beam, said scale including a fastening means for freely depending fastening of the scale at certain locations on the vehicle, a scale body having a graduated scale, and a line cross that is adjustable to selected position in relation to the fastening means, the graduated scale indicating the distance of the line cross from a predetermined reference point, preferably the joint between the fastening means and the vehicle.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: June 28, 1977
    Assignee: Aktiebolaget Nike Hydraulik
    Inventor: Bengt Anders Bjork