Electric power meter adjustment and indication method and apparatus
AssigneeGeneral Electric Company
InventorsJoseph N. Corain, Reginald E. Grenier
Life of this patent
Estimating the term…
Abstract
A method and apparatus for adjustment of the assembly of an electric power meter which rotates in response to power consumption which enables successive test positions to temporarily support the assembly without marking the bearing, and provides only a single mark on the bearing at the final factory adjustment position with an indication on the bearing of any subsequent tampering with that position.
Claims38
A method of adjusting an electric power meter rotatable suspension in which the suspension rotates in bearings in response to electric power consumption to provide an indication of the factory adjusted position on the bearing which supports the rotatable suspension comprising the steps of:
- positioning said rotatable suspension and said bearings on a support member which includes a fastener having a resilient portion extending beyond said fastener toward at least one of said bearings;
- moving said fastener into contact with the one bearing to enable said resilient portion to secure said bearing on said support;
- testing the rotational ability of said rotatable suspension about said bearing;
- loosening said fastener, repositioning the bearing in the event that the proper rotational ability of said rotatable suspension is not provided, and repeating said testing of said rotatable suspension;
- tightening said fastener against the one bearing when proper rotational ability of said rotatable suspension is obtained to cause said fastener to pass beyond said resilient portion to directly contact and secure said bearing;
- and
- applying sufficient force to said fastening member to provide a permanent indication on the surface of said bearing of the final adjusted position of said bearing on said support member.
A suspension for an electric power meter disk which rotates in at least one bearing in response to electric power consumption by the load being metered by the power meter comprising:
- a support member on which the bearing for said suspension is secured;
- said support member including a threaded aperture proximate to said bearing;
- a set screw threaded in said aperture to secure said bearing on said support member when said bearing is properly positioned for rotation in response to said electric power consumption;
- and
- said set screw including a resilient portion which extends beyond the remainder of said set screw in said threaded aperture toward said bearing such that said resilient portion contacts and temporarily secures said bearing on said support member during the testing and trial positioning of said suspension;
- said resilient portion being bypassed by said remainder of said set screw upon the further rotation of said set screw when the final position of said bearing assembly on said support member is determined;
- said bearing including an outer surface region adjacent said set screw and said set screw contacting, securing and providing a single indentation mark on said outer surface of said bearing through said further rotation of said set screw to said final position;
- and
- said single indentation mark being indicative of the final factory adjustment position for said bearing, such that any other indentation mark on said outer surface is indicative of possible tampering with the power consumption information provided by said electric power meter.
A suspension for an electric power meter disk which rotates in at least one bearing in response to electric power consumption by the load being metered by the power meter comprising:
- a support member on which the bearing for said suspension is secured;
- said support member including at least two threaded apertures proximate to said bearing;
- a first set screw in a first of said at least two threaded apertures and including a resilient portion which extends beyond the remainder of said first set screw toward said bearing, such that said resilient portion contacts and temporarily secures said bearing on said support member during the trial positioning and testing of said suspension;
- a second set screw in a second of said at least two threaded apertures to contact and secure said bearing on said support member after said bearing is properly positioned for proper rotation of said suspension in response to said electric power consumption;
- said bearing including an outer surface which said second set screw contacts to provide a single indentation mark on said outer surface of said bearing;
- and said single indentation mark being indicative of the factory adjustment position for said bearing such that any other indentation mark is indicative of possible tampering with the readings provided by said electric power meter.
Dependencies are inferred from the claim text.