Adjustable plumb bob and line capable of automatic braking and r

Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2423811, 33413, G01C 1510

Patent

active

057041318

ABSTRACT:
A plumb bob apparatus for locating verticals with a line capable of automatic braking and retraction comprising a substantially square hollow housing wherein a spring loaded spool, in combination with an adjustable tension and braking device, allow a plumb bob weight to be manually extended by a string or flexible member to any length where the plumb bob weight will remain until retraction is effected. The preferred embodiment of the plumb bob apparatus also possesses a pin-tipped plunger, a notch, and a magnetic strip for attachment of the apparatus to a variety of upper reference points to which the standard plumb bob apparatus would not otherwise be capable of attachment and use.

REFERENCES:
patent: 486604 (1892-11-01), Porter
patent: 642888 (1900-02-01), Van Vliet
patent: 2384914 (1945-09-01), Hoagland
patent: 2637913 (1953-05-01), Williams
patent: 3016616 (1962-01-01), Matson
patent: 3172205 (1965-03-01), Gammon
patent: 3284914 (1966-11-01), Kruse
patent: 3568322 (1971-03-01), Showers
patent: 4660291 (1987-04-01), Dehn
patent: 4697349 (1987-10-01), Lee
patent: 4926562 (1990-05-01), Hwu

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Adjustable plumb bob and line capable of automatic braking and r does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adjustable plumb bob and line capable of automatic braking and r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable plumb bob and line capable of automatic braking and r will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2319502

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.