Instrument for measuring the force for spreading a paste

Patent metadata

Field	Value
Publication number	US-12529613-B2
Application number	US-202118255273-A
Country	US
Kind code	B2
Filing date	Nov 30, 2021
Priority date	Dec 1, 2020
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

An instrument for determining the spreading capacity of a coating or a surface, including a plate on which a gripping system is secured, the tool including a measuring system configured to measure the coating to be spread, wherein the measuring system includes at least one force sensor for generating data relating to the average force applied on the instrument, the maximum force applied on the instrument and the duration, in order to provide a signal representative of the capacity of the coating to be spread or the surface to be spread.

First claim

The invention claimed is:

1 . An instrument for determining a spreading capacity of a coating or a surface comprising:
a plate for spreading the coating, a grip connected to the plate, a measuring system configured to measure the coating to be spread, wherein said measuring system comprises at least one force sensor for sensing a force during a spreading gesture that spreads the coating and a controller coupled to the force sensor and arranged for generating data relating to an average force sensed during each spreading gesture, a maximum force sensed during each spreading gesture, and a duration of each spreading gesture, wherein said controller is further arranged to process said data and provide a signal representative of the spreading capacity of the coating to be spread or of the surface to be coated based on said average force, said maximum force, and said duration of each spreading gesture.

2 . The instrument according to claim 1 , wherein the measuring system is further configured to measure a mass or weight of the coating on the plate.

3 . The instrument of claim 2 , wherein said controller is further configured to also process data relating to the mass or weight of the coating as part of processing said data and provide said signal representative of the spreading capacity.

4 . The instrument according to claim 1 , wherein the measuring system is further configured to measure an inclination of the instrument.

5 . The instrument according to claim 1 , wherein the measuring system is further configured to measure speed or acceleration of said instrument.

6 . The instrument according to claim 5 , wherein the grip comprises at least one pillar extending from the plate and a handle extending from the pillar.

7 . The instrument according to claim 6 , wherein the grip comprises two pillars connected by the handle.

8 . The instrument according to claim 7 , wherein the force sensor is a deformation gauge.

9 . The instrument according to claim 5 , wherein the force sensor is arranged on or in at least one pillar of the grip or arranged on or in the plate or arranged between the plate and the at least one of the pillar of the grip.

10 . The instrument of claim 5 , wherein said controller is further configured to also process data relating to the speed or acceleration of the coating as part of processing said data and provide said signal representative of the spreading capacity.

11 . The instrument according to claim 1 , wherein the controller is adapted to generate an alert signal in light or sound form.

12 . A method for determining a spreading capacity of a coating or a surface comprising:
providing a coating; providing an instrument for determining the spreading capacity of the coating or surface comprising: (a) a plate for spreading the coating, (b) a grip connected to the plate, said tool comprising a measuring system configured to measure the coating to spread including at least one force sensor for sensing a force during a spreading gesture that spreads the coating and a controller coupled to the force sensor; placing said coating on the surface to be coated; spreading said coating using said instrument; said controller of said measuring system generating data during said spreading relating to an average force sensed during each spreading gesture, a maximum force sensed during each spreading gesture, and a duration of each spreading gesture, and wherein said controller also processes said data and provides a signal representative of the spreading capacity of the coating to be spread or of the surface to be coated based on said average force, said maximum force, and said duration of each spreading gesture.

13 . The method according to claim 12 , wherein the measuring system is arranged to measure a mass or weight and wherein said method comprises, before placing the coating on the surface to be coated, placing the instrument in a position such that a surface area of the plate used for the spreading can be used for the temporary storage of coating, and measuring the mass or weight of the temporarily stored coating.

14 . A method according to claim 13 , further comprising:
after said controller generating said data during said spreading, determining an optimal amount of coating to be placed on the instrument, wherein said determination is based on at least one maximum force as sensed and said mass or weight value as measured.

15 . The method according to claim 13 , further comprising said controller also processing data relating to the mass or weight of the coating as part of processing said data and providing said signal representative of the spreading capacity.

16 . The method according to claim 12 , wherein the measuring system is arranged to measure an inclination and wherein said controller of said measuring system, during the spreading of the coating, further generates data relating to an inclination of said instrument.

17 . The method according to claim 16 , further comprising the controller combining an inclination value of the instrument with at least one maximum force and/or time value and in order to detect mishandling of the instrument.

18 . A method for comparing the spreading capacity of different coatings, comprising:
providing at least two different coatings; providing a surface on which the coatings are spread; determining the spreading capacity of each coating by using the method according to claim 12 in order to obtain, for each coating, a signal representative of the capacity of said coating to be spread based on said average force, said maximum force, and said duration of each spreading gesture, and comparing signals representative of the capacity of the coatings to be spread.

19 . A method for comparing the capacity of different surfaces to undergo spreading, comprising:
providing at least two different surfaces; providing a coating to be spread; determining the spreading capacity of each coating by using the method according to claim 12 in order to obtain, for each surface, a signal representative of the capacity of the coating to be spread based on said average force, said maximum force, and said duration of each spreading gesture, and comparing signals representative of the capacity of the surfaces to undergo spreading.

20 . The method according to claim 12 , further comprising generating a user profile using at least the data relating to the average force, the maximum force, and the duration, and saving said profile in the control unit.

21 . The method according to claim 20 , wherein the user profile is used as a reference and compared to a subsequent measurement of at least the average force applied on said instrument, the maximum force applied on the instrument, the and duration.

Assignees

• Saint Gobain Weber France
• Saint Gobain Placo

Inventors

• Arangalage Mélanie
• Beaumont Julien
• Leiva Munoz Raül
• Cardoso Da Silva Luis

Classifications

• G01L1/048

  of torsionally deformable elements · CPC title

• G01G19/56

  combined with handles of tools or household implements · CPC title

• G01C19/44

  for indicating the vertical · CPC title

• E04F21/161

  Trowels · CPC title

• G01L5/008 Primary

  Force sensors integrated in an article or a dummy workpiece · CPC title