FR2450451A1 - Dynamometer for measuring force applied to towing ball by caravan - has shaft slidable within body contg. spring-loaded cap carrying weight graduations - Google Patents
Dynamometer for measuring force applied to towing ball by caravan - has shaft slidable within body contg. spring-loaded cap carrying weight graduationsInfo
- Publication number
- FR2450451A1 FR2450451A1 FR7905691A FR7905691A FR2450451A1 FR 2450451 A1 FR2450451 A1 FR 2450451A1 FR 7905691 A FR7905691 A FR 7905691A FR 7905691 A FR7905691 A FR 7905691A FR 2450451 A1 FR2450451 A1 FR 2450451A1
- Authority
- FR
- France
- Prior art keywords
- dynamometer
- caravan
- spring
- force applied
- ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/01—Traction couplings or hitches characterised by their type
- B60D1/06—Ball-and-socket hitches, e.g. constructional details, auxiliary devices, their arrangement on the vehicle
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
- G01L1/042—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs of helical springs
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/13—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the tractive or propulsive power of vehicles
- G01L5/136—Force sensors associated with a vehicle traction coupling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The dynamometer measures the force applied at the hook of a towed vehicle such as a caravan or boat trailer. The instrument stands on the ground at the same height as the towing vehicle towing ball and is readily stored in the vehicle tool kit. The dynamometer comprises a ball (1) with a threaded hole connected to a central shaft (5) which is locked to it by a lock nut (2). The shaft passes through a body (6) and is locked at the other end by a nut (7) and lock nut (5) which act as stops as the shaft slides in the body. The body acts as a foor whose upper end has a cap (3) which slides over it to a shoulder against the action of a spring. The cap carries weight graduation marks which register against an index (9) visible through a slot.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7905691A FR2450451A1 (en) | 1979-03-01 | 1979-03-01 | Dynamometer for measuring force applied to towing ball by caravan - has shaft slidable within body contg. spring-loaded cap carrying weight graduations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7905691A FR2450451A1 (en) | 1979-03-01 | 1979-03-01 | Dynamometer for measuring force applied to towing ball by caravan - has shaft slidable within body contg. spring-loaded cap carrying weight graduations |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2450451A1 true FR2450451A1 (en) | 1980-09-26 |
Family
ID=9222784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7905691A Withdrawn FR2450451A1 (en) | 1979-03-01 | 1979-03-01 | Dynamometer for measuring force applied to towing ball by caravan - has shaft slidable within body contg. spring-loaded cap carrying weight graduations |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2450451A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002002360A1 (en) * | 2000-07-03 | 2002-01-10 | Martin Hansen | Coupling device for mounting between the drawhook on a car or another type of tractor and the eye bolt on a trailer |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2491508A (en) * | 1945-09-07 | 1949-12-20 | Alvin H Mann | Dynamometric jack |
GB1129007A (en) * | 1966-09-27 | 1968-10-02 | Sarah Sutcliffe | Weight estimating device |
DE1698171B1 (en) * | 1968-01-05 | 1970-07-16 | Hans Wienands | Device for measuring the drawbar load exerted on a towing vehicle |
FR2402199A1 (en) * | 1977-09-01 | 1979-03-30 | Renovur | Calibrated force dynamometer for road vehicle trailer - has elastomer restrained piston sliding in cylinder fitted under tow-bar of trailer when static |
-
1979
- 1979-03-01 FR FR7905691A patent/FR2450451A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2491508A (en) * | 1945-09-07 | 1949-12-20 | Alvin H Mann | Dynamometric jack |
GB1129007A (en) * | 1966-09-27 | 1968-10-02 | Sarah Sutcliffe | Weight estimating device |
DE1698171B1 (en) * | 1968-01-05 | 1970-07-16 | Hans Wienands | Device for measuring the drawbar load exerted on a towing vehicle |
FR2402199A1 (en) * | 1977-09-01 | 1979-03-30 | Renovur | Calibrated force dynamometer for road vehicle trailer - has elastomer restrained piston sliding in cylinder fitted under tow-bar of trailer when static |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002002360A1 (en) * | 2000-07-03 | 2002-01-10 | Martin Hansen | Coupling device for mounting between the drawhook on a car or another type of tractor and the eye bolt on a trailer |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |