IP Library › Granted Patent US 7,536,798
Granted Patent B2
US 7,536,798 · App. 11/755,150 · Granted May 26, 2009

Multiple angle compact spirit level

Assignee: Precision Designed Products, Inc.
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,536,798
App. No.
11/755,150
Granted
May 26, 2009
Kind
B2
Abstract

The level with a generally u-shaped or round, rigid frame. The outer surface is comprised of a number of planar reference faces that are at different fixed angles to a spirit vial mounted in the frame. Optionally, magnets are embedded in the reference faces. Optionally, there are grooves in the reference faces.

Claims (13)

1. A spirit level comprising:

(a) a rigid, generally U-shaped frame having an outer surface and an inner surface, said inner surface being generally concentric with said outer surface and having a pair of opposed walls;

(b) at least one spirit vial mounted to said frame between said opposed walls and having an axis; and

(c) said outer surface comprised of at least three reference faces at predetermined fixed angles to said vial axis, said predetermined angles includes at least 0 degrees, 90 degrees, and third angle between 0 degrees and 90 degrees.

2. The spirit level of claim 1 wherein at least one of said reference faces has an imbedded magnet.

3. The spirit level of claim 1 wherein at least one of said reference faces has a groove.

4. A spirit level comprising:

(a) a rigid, generally circular frame having an outer surface and an inner surface, said inner surface being generally concentric with said outer surface and having a pair of opposed walls;

(b) at least one spirit vial mounted to said frame between said opposed walls and having an axis; and

(c) said outer surface comprised of at least three reference faces at predetermined fixed angles to said vial axis.

5. The spirit level of claim 4 wherein said predetermined angles include at least 0 degrees, 90 degrees, and third angle between 0 degrees and 90 degrees.

6. The spirit level of claim 4 wherein at least one of said reference faces has an imbedded magnet.

7. The spirit level of claim 4 wherein at least one of said reference faces has a groove.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 9, 2018
From: PRECISION DESIGNED PRODUCTS, INC.
To: KEMCO GROUP, INC.
Reel/Frame 047106/0018 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 30, 2007
From: SILBERBERG, MARK L.
To: PRECISION DESIGNED PRODUCTS, INC.
Reel/Frame 019354/0915 →
Continuity (1)
Related Publication 20080222907A1 · Sep 18, 2008