CA2260628A1 - Brake bleeding apparatus - Google Patents
Brake bleeding apparatus Download PDFInfo
- Publication number
- CA2260628A1 CA2260628A1 CA 2260628 CA2260628A CA2260628A1 CA 2260628 A1 CA2260628 A1 CA 2260628A1 CA 2260628 CA2260628 CA 2260628 CA 2260628 A CA2260628 A CA 2260628A CA 2260628 A1 CA2260628 A1 CA 2260628A1
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- brake pedal
- brake
- fluid
- vehicle
- reservoir
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Apparatus for bleeding the brakes of a vehicle using a hydraulic braking system activated by a brake pedal comprising a brake pedal manipulating unit installable in the vehicle to engage with the brake pedal, and a remote control switch for activating the unit to press and release the brake pedal as desired by the user to provide hydraulic pressure to bleed the brakes. The brake pedal manipulating unit is installable between the brake pedal and the steering wheel. The apparatus allows a single person to bleed the brakes while still relying on the brake pedal to provide the pressure necessary to purge contaminated brake fluid from the system.
Description
BRAKE BLEEDING APPARATUS
FIELD OF THE INVENTION
This invention relates generally to hydraulic systems and more particularly to a hydraulic fluid bleeding apparatus for the removal of air or other contaminants from automotive brake systems, commonly referred to as bleeding.
BACKGROUND OF THE INVENTION
Bleeding automotive brake systems of air and other contaminants is an important process in vehicle maintenance. Most modern brake systems rely on hydraulic fluid lines and cylinders that are controlled by operation of the brake pedal. When air is present in the system, the air compresses as the brake pedal is pressed which lowers the hydraulic pressure and the overall braking power of the system and results in a "spongy"
feel to the brakes.
The conventional method for correcting the above problem involves the co-operation of two people to bleed the brakes. One person inside the vehicle depresses the brake pedal while the other person opens the bleed screw port at a particular wheel, generally by loosening the screw-threaded bleed nipple to drain contaminated fluid.
The bleed screw port must then be closed and the brake pedal released. This process is repeated until all air and other contaminants are purged from the system. The same procedure must be performed for each wheel.
Obviously, this procedure is costly to a business as two workers are required to bleed one set of brakes. For a home mechanic, the second person is often not available to assist.
FIELD OF THE INVENTION
This invention relates generally to hydraulic systems and more particularly to a hydraulic fluid bleeding apparatus for the removal of air or other contaminants from automotive brake systems, commonly referred to as bleeding.
BACKGROUND OF THE INVENTION
Bleeding automotive brake systems of air and other contaminants is an important process in vehicle maintenance. Most modern brake systems rely on hydraulic fluid lines and cylinders that are controlled by operation of the brake pedal. When air is present in the system, the air compresses as the brake pedal is pressed which lowers the hydraulic pressure and the overall braking power of the system and results in a "spongy"
feel to the brakes.
The conventional method for correcting the above problem involves the co-operation of two people to bleed the brakes. One person inside the vehicle depresses the brake pedal while the other person opens the bleed screw port at a particular wheel, generally by loosening the screw-threaded bleed nipple to drain contaminated fluid.
The bleed screw port must then be closed and the brake pedal released. This process is repeated until all air and other contaminants are purged from the system. The same procedure must be performed for each wheel.
Obviously, this procedure is costly to a business as two workers are required to bleed one set of brakes. For a home mechanic, the second person is often not available to assist.
To address these problems, various brake bleeding systems have been developed. Applicant is aware of the following patents covering apparatus and methods for bleeding brakes that can be operated by a single person:
5,273,141 Veret et al 2,645,314 Lackinger 2,505,213 Schnell 2,295,539 Beach 5,653,316 Kane 5,497,864 Oien 5,410,88l Ellis 4,842,107 Buchanan et al 4,741,417 Caramanna 4,655,328 Tideberg 4,497,176 Rubin et al 4,418,803 Chichester 4,4l5,071 Butler et al 4,038,823 Mostert 3,756,367 Mitchell et al 3,548,978 Dyke 3,425,7S0 Deane 3,154,087 Beaver 2,644,548 Schiemann 2,524,544 Seawell 2,872,951 Wilkerson 2,209,784 Maack et al 1,82S,013 Patton 1,617,020 Merwin Generally, these patents disclose systems that rely on an external pressure or vacuum source to force hydraulic fluid through the lines of the system and bleed screw ports so that an additional individual is not required to pump the brake pedal. This equipment tends to be expensive and bulky, and it is not always possible to connect the equipment to a particular vehicles braking system due to the large number of variations possible in the design of the basic braking system.
SUMMARY OF THE INVENTION
Accordingly, there is a need for a brake bleeding apparatus that can be operated by one person and that is simple to operate and inexpensive. Furthermore, it is desirable that the apparatus be usable with virtually a11 vehicle brake systems.
To address the foregoing needs, applicant has developed a brake bleeding apparatus that relies on remote controlled activation of the vehicle brake pedal to bleed the brakes. Accordingly, the present invention provides apparatus for bleeding the brakes of a vehicle using a hydraulic braking system activated by a brake pedal comprising:
a brake pedal manipulating unit installable in the vehicle to engage with the brake pedal; and a remote control switch for activating the unit to press and release the brake pedal as desired by the user to provide hydraulic pressure to bleed the brakes.
BRIEF DESCRIPTION OF THE DRAWINGS
Aspects of the present invention are illustrated, merely by way of example, in the accompanying drawings in which:
Figure 1 is a view of a preferred embodiment of the bleeding apparatus of the present invention;
Figure 2 is a schematic view of the components of the bleeding apparatus of Figure 1;
Figure 3 is a detail view showing the manner in which the bleeding apparatus engages with the brake pedal of a vehicle;
Figure 4 is a detail view of a brake fluid discharge container for use with the bleeding apparatus of the present invention attached to the bleed screw port at a vehicle wheel; and Figure 5 is a detail view of a brake fluid supply container for use with the bleeding apparatus of the present invention in order to supply make-up brake fluid to the system at the master cylinder reservoir.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to Figure 1, there is shown the brake pedal manipulation unit 4 of the brake bleeding apparatus of the present invention installed within a vehicle in a typical orientation. Pedal manipulation unit 4 is operated by a remote control switch 6 (Figure 2) retained by a worker positioned outside the vehicle at a wheel for ready access to the brake fluid bleed screw port. Pedal manipulation unit 4 is operated to automatically press brake pedal 8 to supply the pressure necessary to purge the brake system at the wheel being serviced.
Pedal manipulation unit 4 comprises a main housing 10 that houses the control means for the unit which responds to the control signals of the remote control switch. A cylinder 12 having a elongatable piston arm 14 extends from main housing 10. As best shown in Figure 3, piston arm 14 has a free distal end 16 to which is mounted a brake pedal engaging member in the form of hook member 20 which is releasably attachable to brake pedal 8. Curved top end 24 of hook member 20 is adapted to fit over brake pedal 8 to secure the hook member 20 in place.
It is desirable for hook member 20 to be provided with an adjustable stop member 25 to limit movement of the brake pedal. By way of example, Figure 3 shows an adjustable stop member 25 comprising a threaded bolt 26 engaged in a correspondingly threaded sleeve 28 in hook member 20. Rotation of bolt 26 in sleeve acts to adjust the length 30 of bolt 26 protruding below the hook member such that engagement of the bolt with the floorboard 32 of the vehicle stops further movement of piston arm 14.
Preferably, hook member 20 is mounted to piston arm end 16 via a pivotable joint 22 to accommodate arcuate movement of brake pedal 8 and installation of the brake pedal manipulation unit 4 in different vehicles.
Referring again to Figure 1, main housing 10 and cylinder 12 co-operate to define an elongate brake pedal manipulation unit 4 that is adapted be installed between brake pedal 8 and the steering wheel 34 of the vehicle.
The overall length of unit 4 and the adjustable length of piston arm 14 are selected such that the unit is installable in virtually a11 common cars and trucks. The universal use of a brake pedal substantially aligned below the steering wheel of a vehicle means that the apparatus of the present invention can be used in virtually any vehicle equipped with a hydraulic braking system. Preferably, the end of main housing 4 opposite cylinder 12 is formed with a hook member 35 to releasably connect to steering wheel 34 by hooking over the lower portion of the steering wheel.
Figure 2 is a schematic view of the components of a preferred embodiment of the brake bleeding apparatus of the present invention. In Figure 2, the main housing is represented by box 10 which encloses the components normally located in the main housing. In this preferred embodiment, the brake manipulation unit is connectable to an electric power supply 42 via line 43 and a source of air pressure 44 via air hose 45. Both power supply 42 and air pressure source 44 are readily available in a garage. It will be readily apparent that an alternative power supply such as a battery can be used and/or an alternative pressure source such as a hydraulic pressure source.
In the embodiment illustrated in Figure 2, piston arm 14 is an air piston that communicates through line 45 with air pressure source 44 via regulator 46 and air control valve 48. Regulator 46 is manually adjustable by knob 49 extending externally of main housing 10 to set the maximum air pressure deliverable to piston arm 14.
Control valve 48 operates to selectively communicate air pressure source 44 with the piston arm 14 to extend the piston arm. Control valve 48 is actuated in response to a control signal from remote control switch 6.
In the preferred embodiment of Figure 2, remote control switch 6 is mounted in a transmitter that is carried by the user. Depressing switch 6 generates a control signal 55 that is received by receiver 50 in main housing 10. Receiver 50 in turn activates solenoid 52 to operate air control valve 48. Receiver 50 and solenoid 52 receive power from power supply 42. The transmitter and receiver can be simple radio units such as are used to open garage doors. It is also possible for switch 6 to be directly connected to solenoid 52 by wires, however, this arrangement would limit the ability of the user to move freely about the vehicle as the user must be careful to manage the path of the connecting wire.
It is intended that piston arm 14 is a single acting piston in the preferred embodiment. Pressing of control switch 6 by the user will extend piston arm 14 to depress brake pedal 8. When switch 6 is released, piston arm 14 is retracted into cylinder 12 by the normal movement of brake pedal 8 to its default rest position. It is also possible to employ a double acting piston in which switch 6 has two positions: one to extend the piston and the other to retract the piston. In a still further _ 7 _ variation, switch 6 and solenoid 52 can be designed such that piston arm 14 and hence brake pedal 8 depressed until switch 6 is activated a second time. This alternative switch arrangement will avoid the need for the user to keep switch 6 (and hence brake pedal 8) depressed so that both hands will be free to tighten the bleed screw port being worked on.
Figures 4 and 5 illustrate auxiliary equipment that is useful with the brake bleeding apparatus of the present invention.
Figure 4 shows a brake fluid discharge container 60 that is connectable to the bleed screw port 62 of a vehicle brake at the wheel hub 63 to collect purged brake fluid. Brake fluid discharge container 60 includes a fluid receptacle 61 and a flexible attachment 66 removably and sealingly installable over nipple 64 installed in bleed screw port 62. Attachment 66 is preferably a rubber hood and is dimensioned for a sealing fit over nipple 64 while still permitting access to nut 65 for opening and closing bleed screw port 62. A tube section 67 communicates flexible attachment 66 with receptacle 61. A one-way valve 68 is located in tube section 68 and acts to permit flow of brake fluid out of the bleed screw port as indicated by arrow 69 but prevents purged fluid or air from moving in the opposite direction.
When bleeding the brakes of a vehicle, a user is removing fluid from the system along with air and other contaminants. It is important to keep the brake fluid level topped up at the master cylinder reservoir of the brake system so that air is not introduced inadvertently at the reservoir by running the reservoir dry. Figure 5 illustrates a brake fluid supply device 72 for supplying fresh brake fluid to the conventional reservoir 73 at the _ g _ master cylinder 74 of the braking system. Brake fluid supply device 72 comprises a container 75 to store fresh brake fluid 76 that sits atop the existing reservoir 73.
Container 75 includes a filling port 77 and cap 77a and an outlet port 78 in the base 79 to deliver fresh brake fluid by gravity to master cylinder reservoir 73 of the braking system. An automatic shut-off valve 80 is provided for closing outlet port 78 when the reservoir fluid reaches a pre-determined level indicated by line 81. Automatic shut-off valve 80 includes a float ball 82 enclosed in a cage 83. Float ball 82 floats on the surface of the reservoir fluid to rise and close the port when the reservoir fluid reaches level 80 and to fall and open the port when the reservoir fluid drops below level 80. In addition, a manual shut-off valve 85 is provided to seal outlet port 78 when removing the brake fluid supply device 72 from the reservoir of the braking system. Valve 85 is a threaded post that is rotatable to move downwardly block and seal outlet port 78.
Although the present invention has been described in some detail by way of example for purposes of clarity and understanding, it will be apparent that certain changes and modifications may be practised within the scope of the appended claims.
5,273,141 Veret et al 2,645,314 Lackinger 2,505,213 Schnell 2,295,539 Beach 5,653,316 Kane 5,497,864 Oien 5,410,88l Ellis 4,842,107 Buchanan et al 4,741,417 Caramanna 4,655,328 Tideberg 4,497,176 Rubin et al 4,418,803 Chichester 4,4l5,071 Butler et al 4,038,823 Mostert 3,756,367 Mitchell et al 3,548,978 Dyke 3,425,7S0 Deane 3,154,087 Beaver 2,644,548 Schiemann 2,524,544 Seawell 2,872,951 Wilkerson 2,209,784 Maack et al 1,82S,013 Patton 1,617,020 Merwin Generally, these patents disclose systems that rely on an external pressure or vacuum source to force hydraulic fluid through the lines of the system and bleed screw ports so that an additional individual is not required to pump the brake pedal. This equipment tends to be expensive and bulky, and it is not always possible to connect the equipment to a particular vehicles braking system due to the large number of variations possible in the design of the basic braking system.
SUMMARY OF THE INVENTION
Accordingly, there is a need for a brake bleeding apparatus that can be operated by one person and that is simple to operate and inexpensive. Furthermore, it is desirable that the apparatus be usable with virtually a11 vehicle brake systems.
To address the foregoing needs, applicant has developed a brake bleeding apparatus that relies on remote controlled activation of the vehicle brake pedal to bleed the brakes. Accordingly, the present invention provides apparatus for bleeding the brakes of a vehicle using a hydraulic braking system activated by a brake pedal comprising:
a brake pedal manipulating unit installable in the vehicle to engage with the brake pedal; and a remote control switch for activating the unit to press and release the brake pedal as desired by the user to provide hydraulic pressure to bleed the brakes.
BRIEF DESCRIPTION OF THE DRAWINGS
Aspects of the present invention are illustrated, merely by way of example, in the accompanying drawings in which:
Figure 1 is a view of a preferred embodiment of the bleeding apparatus of the present invention;
Figure 2 is a schematic view of the components of the bleeding apparatus of Figure 1;
Figure 3 is a detail view showing the manner in which the bleeding apparatus engages with the brake pedal of a vehicle;
Figure 4 is a detail view of a brake fluid discharge container for use with the bleeding apparatus of the present invention attached to the bleed screw port at a vehicle wheel; and Figure 5 is a detail view of a brake fluid supply container for use with the bleeding apparatus of the present invention in order to supply make-up brake fluid to the system at the master cylinder reservoir.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to Figure 1, there is shown the brake pedal manipulation unit 4 of the brake bleeding apparatus of the present invention installed within a vehicle in a typical orientation. Pedal manipulation unit 4 is operated by a remote control switch 6 (Figure 2) retained by a worker positioned outside the vehicle at a wheel for ready access to the brake fluid bleed screw port. Pedal manipulation unit 4 is operated to automatically press brake pedal 8 to supply the pressure necessary to purge the brake system at the wheel being serviced.
Pedal manipulation unit 4 comprises a main housing 10 that houses the control means for the unit which responds to the control signals of the remote control switch. A cylinder 12 having a elongatable piston arm 14 extends from main housing 10. As best shown in Figure 3, piston arm 14 has a free distal end 16 to which is mounted a brake pedal engaging member in the form of hook member 20 which is releasably attachable to brake pedal 8. Curved top end 24 of hook member 20 is adapted to fit over brake pedal 8 to secure the hook member 20 in place.
It is desirable for hook member 20 to be provided with an adjustable stop member 25 to limit movement of the brake pedal. By way of example, Figure 3 shows an adjustable stop member 25 comprising a threaded bolt 26 engaged in a correspondingly threaded sleeve 28 in hook member 20. Rotation of bolt 26 in sleeve acts to adjust the length 30 of bolt 26 protruding below the hook member such that engagement of the bolt with the floorboard 32 of the vehicle stops further movement of piston arm 14.
Preferably, hook member 20 is mounted to piston arm end 16 via a pivotable joint 22 to accommodate arcuate movement of brake pedal 8 and installation of the brake pedal manipulation unit 4 in different vehicles.
Referring again to Figure 1, main housing 10 and cylinder 12 co-operate to define an elongate brake pedal manipulation unit 4 that is adapted be installed between brake pedal 8 and the steering wheel 34 of the vehicle.
The overall length of unit 4 and the adjustable length of piston arm 14 are selected such that the unit is installable in virtually a11 common cars and trucks. The universal use of a brake pedal substantially aligned below the steering wheel of a vehicle means that the apparatus of the present invention can be used in virtually any vehicle equipped with a hydraulic braking system. Preferably, the end of main housing 4 opposite cylinder 12 is formed with a hook member 35 to releasably connect to steering wheel 34 by hooking over the lower portion of the steering wheel.
Figure 2 is a schematic view of the components of a preferred embodiment of the brake bleeding apparatus of the present invention. In Figure 2, the main housing is represented by box 10 which encloses the components normally located in the main housing. In this preferred embodiment, the brake manipulation unit is connectable to an electric power supply 42 via line 43 and a source of air pressure 44 via air hose 45. Both power supply 42 and air pressure source 44 are readily available in a garage. It will be readily apparent that an alternative power supply such as a battery can be used and/or an alternative pressure source such as a hydraulic pressure source.
In the embodiment illustrated in Figure 2, piston arm 14 is an air piston that communicates through line 45 with air pressure source 44 via regulator 46 and air control valve 48. Regulator 46 is manually adjustable by knob 49 extending externally of main housing 10 to set the maximum air pressure deliverable to piston arm 14.
Control valve 48 operates to selectively communicate air pressure source 44 with the piston arm 14 to extend the piston arm. Control valve 48 is actuated in response to a control signal from remote control switch 6.
In the preferred embodiment of Figure 2, remote control switch 6 is mounted in a transmitter that is carried by the user. Depressing switch 6 generates a control signal 55 that is received by receiver 50 in main housing 10. Receiver 50 in turn activates solenoid 52 to operate air control valve 48. Receiver 50 and solenoid 52 receive power from power supply 42. The transmitter and receiver can be simple radio units such as are used to open garage doors. It is also possible for switch 6 to be directly connected to solenoid 52 by wires, however, this arrangement would limit the ability of the user to move freely about the vehicle as the user must be careful to manage the path of the connecting wire.
It is intended that piston arm 14 is a single acting piston in the preferred embodiment. Pressing of control switch 6 by the user will extend piston arm 14 to depress brake pedal 8. When switch 6 is released, piston arm 14 is retracted into cylinder 12 by the normal movement of brake pedal 8 to its default rest position. It is also possible to employ a double acting piston in which switch 6 has two positions: one to extend the piston and the other to retract the piston. In a still further _ 7 _ variation, switch 6 and solenoid 52 can be designed such that piston arm 14 and hence brake pedal 8 depressed until switch 6 is activated a second time. This alternative switch arrangement will avoid the need for the user to keep switch 6 (and hence brake pedal 8) depressed so that both hands will be free to tighten the bleed screw port being worked on.
Figures 4 and 5 illustrate auxiliary equipment that is useful with the brake bleeding apparatus of the present invention.
Figure 4 shows a brake fluid discharge container 60 that is connectable to the bleed screw port 62 of a vehicle brake at the wheel hub 63 to collect purged brake fluid. Brake fluid discharge container 60 includes a fluid receptacle 61 and a flexible attachment 66 removably and sealingly installable over nipple 64 installed in bleed screw port 62. Attachment 66 is preferably a rubber hood and is dimensioned for a sealing fit over nipple 64 while still permitting access to nut 65 for opening and closing bleed screw port 62. A tube section 67 communicates flexible attachment 66 with receptacle 61. A one-way valve 68 is located in tube section 68 and acts to permit flow of brake fluid out of the bleed screw port as indicated by arrow 69 but prevents purged fluid or air from moving in the opposite direction.
When bleeding the brakes of a vehicle, a user is removing fluid from the system along with air and other contaminants. It is important to keep the brake fluid level topped up at the master cylinder reservoir of the brake system so that air is not introduced inadvertently at the reservoir by running the reservoir dry. Figure 5 illustrates a brake fluid supply device 72 for supplying fresh brake fluid to the conventional reservoir 73 at the _ g _ master cylinder 74 of the braking system. Brake fluid supply device 72 comprises a container 75 to store fresh brake fluid 76 that sits atop the existing reservoir 73.
Container 75 includes a filling port 77 and cap 77a and an outlet port 78 in the base 79 to deliver fresh brake fluid by gravity to master cylinder reservoir 73 of the braking system. An automatic shut-off valve 80 is provided for closing outlet port 78 when the reservoir fluid reaches a pre-determined level indicated by line 81. Automatic shut-off valve 80 includes a float ball 82 enclosed in a cage 83. Float ball 82 floats on the surface of the reservoir fluid to rise and close the port when the reservoir fluid reaches level 80 and to fall and open the port when the reservoir fluid drops below level 80. In addition, a manual shut-off valve 85 is provided to seal outlet port 78 when removing the brake fluid supply device 72 from the reservoir of the braking system. Valve 85 is a threaded post that is rotatable to move downwardly block and seal outlet port 78.
Although the present invention has been described in some detail by way of example for purposes of clarity and understanding, it will be apparent that certain changes and modifications may be practised within the scope of the appended claims.
Claims (18)
1. Apparatus for bleeding the brakes of a vehicle using a hydraulic braking system activated by a brake pedal comprising:
a brake pedal manipulating unit installable in the vehicle to engage with the brake pedal; and a remote control switch for activating the unit to press and release the brake pedal as desired by the user to provide hydraulic pressure to bleed the brakes.
a brake pedal manipulating unit installable in the vehicle to engage with the brake pedal; and a remote control switch for activating the unit to press and release the brake pedal as desired by the user to provide hydraulic pressure to bleed the brakes.
2. Apparatus as claimed in claim 1 in which the brake pedal manipulating unit comprises:
a main housing;
a cylinder extending from the main housing having an elongatable piston arm with a free distal end;
a brake pedal engaging member mounted to the free end of the piston arm, the brake pedal engaging member being releasably attachable to the brake pedal; and control means in the main housing responsive to the remote control switch to control movement of the piston arm to press and release the brake pedal.
a main housing;
a cylinder extending from the main housing having an elongatable piston arm with a free distal end;
a brake pedal engaging member mounted to the free end of the piston arm, the brake pedal engaging member being releasably attachable to the brake pedal; and control means in the main housing responsive to the remote control switch to control movement of the piston arm to press and release the brake pedal.
3. Apparatus as claimed in claim 2 in which the main housing is releasably connectable to the steering wheel of the vehicle such that the brake pedal manipulating unit is installable in the vehicle to extend between the steering wheel and the brake pedal of the vehicle.
4. Apparatus as claimed in claim 2 in which the main housing includes a hook member adapted to hook over the lower portion of the steering wheel of the vehicle.
5. Apparatus as claimed in claim 2 in which the cylinder is connectable to a pressure source and the control means comprises a control valve to selectively communicate the pressure source with the cylinder to extend the piston arm, the control valve being actuatable in response to a control signal from the remote control switch.
6. Apparatus as claimed in claim 5 in which the remote control switch is mounted in a transmitter to generate the control signal and the main housing includes a receiver to receive the control signal in communication with a solenoid to operate the control valve in response to the control signal.
7. Apparatus as claimed in claim 6 including a regulator to regulate pressure from the pressure source.
8. Apparatus as claimed in claim 5 in which the cylinder is a pneumatic cylinder and the pressure source is an air pressure source.
9. Apparatus as claimed in claim 2 in which the brake pedal engaging member comprises a hook member adapted to be secured over the brake pedal.
10. Apparatus as claimed in claim 2 including an adjustable stop member to limit movement of the brake pedal.
11. Apparatus as claimed in claim 4 in which the adjustable stop member comprises a threaded bolt engaged in a correspondingly threaded cavity in the brake pedal engaging member, rotation of the bolt in the threaded cavity acting to adjust the length of the threaded bolt protruding from the brake pedal engaging member whereby engagement of the threaded bolt with a fixed surface of the vehicle stops movement of the piston arm.
12. Apparatus as claimed in claim 2 in which the brake pedal engaging member is pivotally mounted to the free distal end of piston arm.
13. Apparatus as claimed in claim 1 in which the hydraulic braking system has bleed screw ports to release purged brake fluid and the apparatus includes a brake fluid discharge container to collect purged brake fluid.
14. Apparatus as claimed in claim 13 in which the brake fluid discharge container comprises a fluid receptacle, a flexible attachment removably and sealingly installable over the bleed screw port, a tube section communicating the flexible attachment with the receptacle, and a one-way valve in the tube section to permit movement of fluid only from the bleed screw port to the receptacle.
15. Apparatus as claimed in claim 1 in which the hydraulic braking system has a brake fluid reservoir and the apparatus includes a brake fluid supply device for supplying fresh brake fluid to the braking system at the brake fluid reservoir.
16. Apparatus as claimed in claim 15 in which brake fluid supply device comprises a container for fresh brake fluid, a port in the container to deliver brake fluid to the reservoir of the braking system, and an automatic shut-off valve for closing the port when the reservoir fluid reaches a pre-determined level.
17. Apparatus as claimed in claim 16 in which the automatic shut-off valve comprises a float adapted to float on the surface of the reservoir fluid to rise and close the port when the reservoir fluid reaches the pre-determined level and to fall and open the port when the reservoir fluid drops below the pre-determined level.
18. Apparatus as claimed in claim 16 including an additional manual shut-off valve to seal the port when removing the brake fluid supply device from the reservoir of the braking system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1871898A | 1998-02-04 | 1998-02-04 | |
| US09/018,718 | 1998-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2260628A1 true CA2260628A1 (en) | 1999-08-04 |
Family
ID=29581763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2260628 Abandoned CA2260628A1 (en) | 1998-02-04 | 1999-02-02 | Brake bleeding apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2260628A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10857990B2 (en) * | 2018-11-20 | 2020-12-08 | Robert Whitt | Hydraulic system bleed device and system thereof |
| EP4321400A1 (en) * | 2022-08-08 | 2024-02-14 | Volvo Car Corporation | Equipment, system, method and computer-readable storage medium for filling and bleeding brake fluid |
-
1999
- 1999-02-02 CA CA 2260628 patent/CA2260628A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10857990B2 (en) * | 2018-11-20 | 2020-12-08 | Robert Whitt | Hydraulic system bleed device and system thereof |
| EP4321400A1 (en) * | 2022-08-08 | 2024-02-14 | Volvo Car Corporation | Equipment, system, method and computer-readable storage medium for filling and bleeding brake fluid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |