Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Reexamination Certificate
1998-09-11
2001-05-29
Fulton, Christopher W. (Department: 2859)
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
C033S451000, C033S464000
Reexamination Certificate
active
06237237
ABSTRACT:
TECHNICAL FIELD
The present invention relates to precision measuring devices and, more particularly, to a device for accurately providing a plumb line, measurements, leveling, and a straight edge.
BACKGROUND OF THE INVENTION
The process of plumbing involves projecting a straight line between two points. In the fields of construction, woodworking, and other similar activities, it is often necessary to perform a plumbing function. One technique that is prevalent in the field of construction is the use of a plumb bob. A plumb bob consists of a string with a weight, such as a lead bob, tied to one end. In operation, the end of the string without the weight is held against an upper surface in such a way that the weight is suspended just above a lower surface. By moving the weight directly over a particular point on the lower surface, the point on the upper surface directly above the point on the lower surface can be determined. One problem associated with a standard string plumb bob is that it can be awkward to use and control. For instance, it may require two people to accurately use and control a string plumb bob especially from substantial heights. One person is required to be on a ladder while the other person steadies the weight and takes an accurate reading.
What is needed is an apparatus for accurately making a plumb line by an individual without the need for any assistance. In addition, a device is needed to make a plumb line that is easy to use. An apparatus is also needed that allows the accurate measurement of heights by an individual.
SUMMARY
The present invention is drawn to a multi-purpose apparatus for plumbing and measuring. A slide element is slidably mounted to a body element. The body element is attached to a base unit. Both the slide element and the body element have measuring striations. A side level and a top level are mounted on the apparatus. In practice, the base of the apparatus is positioned against a comer or floor. The slide element is slid upwards until contact is made with either the ceiling or joist. Viewing the side and top levels, the apparatus is leveled until plumb. The slide is then pushed slightly harder to assure stability and locked into place. The apparatus will now be fixed in place allowing measurements and markings to be performed. Notice that placement, measuring and marking can all be performed by a single individual.
REFERENCES:
patent: 2551524 (1951-05-01), Bullivant
patent: 3832782 (1974-09-01), Johnson et al.
patent: 4152838 (1979-05-01), Cook
patent: 4607437 (1986-08-01), McSorley, Sr. et al.
patent: 4894925 (1990-01-01), Langmaid
patent: 4928395 (1990-05-01), Good
patent: 5412875 (1995-05-01), Hilderbrandt
McKenna James M.
O'Keefe John T.
Fulton Christopher W.
Lafferty Wm. Brook
Troutman Sanders LLP
LandOfFree
Multi-purpose plumbing and measuring apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-purpose plumbing and measuring apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-purpose plumbing and measuring apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2515193