ladder inclinometer

Description

FIG. 1 is a front perspective view of a ladder inclinometer, showing the ladder and pendulum in broken lines for illustration purposes only and forming no part of the claimed design;

FIG. 2 is a front enlarged perspective view thereof;

FIG. 3 is a front elevational view angled in one direction to the vertical thereof;

FIG. 4 is a front elevational view angled in the opposite direction from FIG. 3 thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a top end elevational view thereof;

FIG. 7 is a lower end elevational view thereof;

FIG. 8 is a side elevational view thereof, with the opposite side being a mirror image thereof; and,

FIG. 9 is a front elevational view of an alternate embodiment.

Referenced Cited
U.S. Patent Documents
D195431 June 1963 Rieker, Jr.
D249875 October 10, 1978 Bumbal et a.
349590 September 1886 Hollingsworth
651519 June 1900 Algoud
667836 February 1901 Wood
790813 May 1905 Auld
2527982 October 1950 Brock
2632958 March 1953 De Masters
2651848 September 1953 Sims
2822618 February 1958 Wendel
2845719 August 1958 Thomiszer
3118234 January 1964 Wilson
3293755 December 1966 Cronwell
4492029 January 8, 1985 Tanaka et al.
5341899 August 30, 1994 Casamento
5520384 May 28, 1996 Wetzel
Patent History
Patent number: D378991
Type: Grant
Filed: Jan 5, 1996
Date of Patent: Apr 29, 1997
Assignee: Wytech, Inc. (Des Moines, IA)
Inventor: James E. Boelling (Des Moines, IA)
Primary Examiner: Antoine Duval Davis
Law Firm: Zarley, McKee, Thomte, Voorhees & Sease
Application Number: 0/48,632
Classifications
Current U.S. Class: Transit Or Theodolite (D10/66)