HYDRAULIC BALANCE

• US 3,698,492 A
• Filed: 05/03/1971
• Issued: 10/17/1972
• Est. Priority Date: 05/15/1970
• Status: Expired due to Term

• Current Assignee: Daniel Lejeune
• Original Assignee: Daniel Lejeune
• Inventors: Lejeune, Daniel
• Primary Examiner(s): Wilkins, Richard B.
• Assistant Examiner(s): Miller, Jr., George H.
• Application Number:
  US05/139,697
• Time in Patent Office: 533 Days
• Field of Search: 177/126,208,209,136
• US Class Current: 177/1
• CPC Class Codes: G01G 19/02 for weighing wheeled or rolling bodies, e.g. vehicles
• CPC Class Codes: G01G 19/025 wheel-load scales
• CPC Class Codes: G01G 5/04 with means for measuring the pressure imposed by the load on a liquid pressure gauges per se G01L

Abstract

A hydraulic balance is provided which comprises two deformable parallel tubes containing a fluid under pressure and arranged between a lower base plate and an upper load supporting plate, each of the tubes forming part of a separate hydraulic circuit having a separate pressure measuring device.

Claims

1. A hydraulic balance capable of accurately measuring the load on a tire of a heavy vehicle comprising two deformable parallel tubes defining a transverse symmetry plane and containing a liquid under equal pressure and arranged between a lower plate forming a base and an upper plate forming a support for the tire locatable along the transverse symmetry plane, each of said tubes forming part of a separate hydraulic circuit having a separate pressure measuring device and having means for distributing the liquid under equal pressure into each tube.

2. The method of accurately measuring the load on a tire of a vehicle which comprises locating the tire along the transverse symmetry plane atop two deformable parallel tubes containing a liquid under equal pressure, separately measuring the increase in pressure in each tube and determining the load from the sum of the increases in pressure.