IP Library Granted Patent US 9,816,796
Granted Patent B2
US 9,816,796 · App. 14/877,162 · Granted Nov 14, 2017

Guide rail straightness tester

Inventors: Steven P. Wurth (Sylvania, OH); Terry Rodebaugh (Whitehouse, OH); Douglas Scott (Grosse Ile, MI)
Assignee: Wurtec, Incorporated
G01B5/20
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 9,816,796
App. No.
14/877,162
Granted
Nov 14, 2017
Kind
B2
Abstract

A guide rail straightness tester is provided. The guide rail straightness tester includes a first rail clamp assembly attached to a guide rail. An opposing second rail clamp assembly is attached to the guide rail. A sensor assembly is positioned between the first and second rail clamp assemblies and configured for slidable seating on the guide rail. The sensor assembly includes a sensor plate. A line extends from the first rail clamp assembly through an aperture in the sensor plate and is connected to the second rail clamp assembly. The sensor assembly is configured to determine the straightness of the guide rail during movement of the sensor assembly along the guide rail.

Claims (35)

1. A guide rail straightness tester comprising:

a first rail clamp assembly attached to a guide rail;

an opposing second rail clamp assembly attached to the guide rail;

a sensor assembly positioned between the first and second rail clamp assemblies and configured for slidable seating on the guide rail, the sensor assembly including a sensor plate; and

a line extending from the first rail clamp assembly through an aperture in the sensor plate and connected to the second rail clamp assembly;

wherein the sensor assembly is configured to determine the straightness of the guide rail during movement of the sensor assembly along the guide rail.

2. The guide rail straightness tester of claim 1 , wherein the sensor plate includes a plurality of specification apertures ranging in size from 1.0 mm to 4.0 mm.

3. The guide rail straightness tester of claim 2 , wherein the sensor plate is configured for rotation to access the plurality of specification apertures.

4. The guide rail straightness tester of claim 3 , wherein the quadrant apertures are configured to determine the nature of a warp.

5. The guide rail straightness tester of claim 1 , wherein a slot connects each of the specification apertures with a quadrant aperture.

6. The guide rail straightness tester of claim 1 , wherein the sensor plate and the line have an electrical potential.

7. The guide rail straightness tester of claim 6 , wherein completing the electrical potential actuates an indicator.

8. The method of claim 1 , including the step of forming an electrical potential between the sensor plate and the line.

9. A guide rail straightness tester comprising:

a first rail clamp assembly attached to a guide rail;

an opposing second rail clamp assembly attached to the guide rail;

a sensor assembly positioned between the first and second rail clamp assemblies and configured for slidable seating on the guide rail; and

a line extending from the first rail clamp assembly through an aperture in the sensor assembly and connected to the second rail clamp assembly;

wherein the second rail clamp assembly and the sensor assembly can be docked together to facilitate relocation from the guide rail to a different guide rail.

10. The guide rail straightness tester of claim 9 , wherein the second rail clamp assembly includes fixtures extending from a plate configured to be received by passages in the sensor assembly.

11. The guide rail straightness tester of claim 10 , wherein the fixtures have a circular cross-sectional shape.

12. The guide rail straightness tester of claim 9 , wherein the docked second rail clamp assembly and the sensor assembly and can be relocated to a different guide rail with the line still connected to the first rail clamp assembly.

13. The guide rail straightness tester of claim 9 , wherein the sensor plate includes a plurality of specification apertures ranging in size from 1.0 mm to 4.0 mm.

14. The guide rail straightness tester of claim 13 , wherein a slot connects each of the specification apertures with a quadrant aperture.

15. The guide rail straightness tester of claim 14 , wherein the quadrant apertures are configured to determine the nature of a warp.

16. A method of using a guide rail straightness tester, the method comprising the steps of:

attaching a first rail clamp assembly to a guide rail;

attaching an opposing second rail clamp assembly to the guide rail;

positioning a sensor assembly between the first and second rail clamp assemblies, the sensor assembly configured for slidable seating on the guide rail, the sensor assembly including a sensor plate; and

extending a line from the first rail clamp assembly through an aperture in the sensor plate and connecting the line to the second rail clamp assembly;

wherein the sensor assembly is configured to determine the straightness of the guide rail during movement of the sensor assembly along the guide rail.

17. The method of claim 16 , including the step of selecting a specification aperture from a plurality of specification apertures ranging in size from 1.0 mm to 4.0 mm.

18. The method of claim 17 , including the step of rotating the sensor plate to the selected specification aperture.

19. The method of claim 18 , including the step of rotating the sensor plate from the selected specification aperture through a slot to a quadrant aperture.

20. The method of claim 19 , including the step of determining the nature of a warp of the line from a relative positioning of the line within the quadrant aperture.

Assignments (2)
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE PREVIOUSLY RECORDED AT REEL: 036748 FRAME: 0110. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT . Recorded May 15, 2017
From: WURTH, STEVEN P.; RODEBAUGH, TERRY; SCOTT, DOUGLAS
To: WURTEC, INCORPORATED
Reel/Frame 042459/0076 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 7, 2015
From: WURTH, STEVEN P.; RODEBAUGH, TERRY; SCOTT, DOUGLAS
To: WURTEC ELEVATOR PRODUCTS & SERVICES
Reel/Frame 036748/0110 →
Continuity (2)
Provisional Application 62061910 · Oct 9, 2014
Related Publication 20160102962A1 · Apr 14, 2016