Level device

Details Level device Level device

1979-09-24

1981-06-23

Martin, Jr., William D.

Geometrical instruments

Miscellaneous

Light direction

33 1H, 33274, 33292, 33339, 33413, G01B 310, G01B 1100

Patent

active

042742030

ABSTRACT:
A measuring apparatus in which two casings are connected together each housing a coiled measuring means adapted for being selectively un-coiled and withdrawn from the casing or recoiled and retracted into the casing. A sighting device is provided on one of the casings to sight a target. The sighting means includes a level for determining when the sighting device is sighting along a horizontal line and a second level is provided to indicate when the casings are also appropriately arranged relative to a vertical line perpendicular to the first said horizontal line. Triggers are provided for the two coiled measuring devices and a brake is provided for each of the measuring devices. A digital display is employed and a counting circuit is provided for indicating the amount of measuring means which is uncoiled from the two respective casings. An alarm is provided to indicate when the unwound measuring devices are off line relative to the sighting device.

REFERENCES:
patent: 918869 (1909-04-01), Larsen
patent: 1400626 (1921-12-01), Rodriguez
patent: 1448931 (1923-03-01), Manning
patent: 2198836 (1940-04-01), Patton
patent: 2627115 (1953-02-01), Pippin
patent: 2746164 (1956-05-01), Eitzen
patent: 2753633 (1956-07-01), Calver
patent: 2807887 (1957-10-01), Webb
patent: 2942348 (1960-06-01), Caruso
patent: 3242578 (1966-03-01), Moll
patent: 3335498 (1967-08-01), Barbee
patent: 3568322 (1971-03-01), Showers
patent: 4067117 (1978-01-01), Bernard

Affiliated with

Also associated with

Rating

Level device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Level device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Level device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2200815