Constant sine bar

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Description

FIG. 1 is a top and left rear perspective view of a constant sine bar showing my new design;

FIG. 2 is a left side elevational view thereof, the right side being a mirror image thereto. The broken line showing of a roll-pin is environmental only and forms no part of the claimed design;

FIG. 3 is a top plan view thereof,

FIG. 4 is a bottom plan view thereof,

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a front elevational view thereof.

Referenced Cited
U.S. Patent Documents
D137417 March 1944 Baker
2417150 March 1947 Berry
2446562 August 1948 Trbojevich
3623231 November 1971 Holt
Other references
  • American Machinist-2/1/33-pp. 90-91-Sine Bars. American Machinist-6/6/46-p. 143-Sine Bars.
Patent History
Patent number: D276317
Type: Grant
Filed: Sep 20, 1982
Date of Patent: Nov 13, 1984
Inventor: Richard A. Schley (Warren, OH)
Primary Examiner: Nelson C. Holtje
Attorneys: Michael Williams, Warren Low
Application Number: 6/419,739
Classifications
Current U.S. Class: Angle Or Direction (7) (D10/65); D 8/14