Method for actuating a brake light of a hydraulic driven working machine

Patent metadata

Field	Value
Publication number	US-9365154-B2
Application number	US-201214375085-A
Country	US
Kind code	B2
Filing date	Feb 2, 2012
Priority date	Feb 2, 2012
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

A method is provided for actuating a brake light of a hydraulic driven working machine that includes equipment to detect the condition of travel including a travel speed sensor, a gear selector switch, a travel direction switch and a travel pedal pressure sensor. The equipment automatically activates a brake light via a control circuit depending on the selected gear if the machine decelerates without the brake pedal being pushed.

First claim

The invention claimed is:

1. A method for actuating a brake light of a hydraulic driven working machine, the machine comprising equipment to detect a condition of travel including a travel speed sensor, a gear selector switch, a travel direction switch and a travel pedal pressure sensor, comprising
automatically activating, via the equipment, the brake light via a control circuit depending on a selected gear if the machine decelerates without a brake pedal being pushed, wherein depending on a selection between at least three different gears the equipment automatically activates the brake light via the control circuit if a gear greater than a lowest gear of the machine is selected and the travel direction switch is changed.

2. A method according claim 1 , wherein the brake light is further turned on via pushing of the brake pedal being detected by a brake pressure sensor.

3. A method according to claim 1 , wherein as a further criteria the travel speed detected by the travel speed sensor exceeds 5 km/h.

4. A method according to claim 1 , wherein depending on the selection between at least three different gears the equipment automatically activates the brake light via the control circuit if a gear greater than a lowest gear of the machine is selected and the travel pedal pressure sensor detects a release of the travel pedal above a predetermined value.

5. A method according to claim 4 , wherein as a further criteria the navel speed detected by the speed sensor exceeds 15 km/h.

6. A method according to claim 1 , wherein depending on the selection between at least three different gears the equipment automatically activates the brake light via the control circuit if a third gear is selected, the travel speed detected by the speed sensor exceeds 15 km/h and a malfunction of the equipment is detected.

7. A method for actuating a brake light of a hydraulic driven working machine, the machine comprising equipment to detect a condition of travel including a travel speed sensor, a gear selector switch, a travel direction switch and a travel pedal pressure sensor, comprising
automatically activating, via the equipment, the brake light via a control circuit depending on a selected gear if the machine decelerates without a brake pedal being pushed, wherein depending on a selection between at least three different gears the equipment automatically activates the brake light via the control circuit if a gear greater than a lowest gear of the machine is selected and the travel pedal pressure sensor detects a release of the travel pedal.

8. A method according claim 7 , wherein the brake light is further turned on via pushing of the brake pedal being detected by a brake pressure sensor.

9. A method according to claim 7 , wherein as a further criteria the travel speed detected by the travel speed sensor exceeds 5 km/h.

10. A method according to claim 7 , wherein depending on the selection between at least three different gears the equipment automatically activates the brake light via the control circuit if a gear greater than a lowest gear of the machine is selected and the travel pedal pressure sensor detects a release of the travel pedal above a predetermined value.

11. A method according to claim 10 , wherein as a further criteria the travel speed detected by the speed sensor exceeds 15 km/h.

12. A method according to claim 7 , wherein depending on the selection between at least three different gears the equipment automatically activates the brake light via the control circuit if a third gear is selected, the travel speed detected by the speed sensor exceeds 15 km/h and a malfunction of the equipment is detected.

Assignees

• Müller Daniel
• Schaefer Thomas
• Faber Bernd
• Volvo Constr Equip Ab

Inventors

• Müller Daniel
• Schaefer Thomas
• Faber Bernd

Classifications

• B60Q1/444

  with indication of the braking strength or speed changes, e.g. by changing shape or intensity of the indication (B60Q1/1407, B60Q1/442, B60Q1/447 take precedence) · CPC title

• B60Q1/441 Primary

  Electric switches operable by the driver's pedals · CPC title

• B60Q1/44 Primary

  for indicating braking action {or preparation for braking, e.g. by detection of the foot approaching the brake pedal} · CPC title

• B60Q2800/20

  Utility vehicles, e.g. for agriculture, construction work · CPC title