CA2520747A1 - Heavy duty electronic brake stroke indicator - Google Patents
Heavy duty electronic brake stroke indicator Download PDFInfo
- Publication number
- CA2520747A1 CA2520747A1 CA002520747A CA2520747A CA2520747A1 CA 2520747 A1 CA2520747 A1 CA 2520747A1 CA 002520747 A CA002520747 A CA 002520747A CA 2520747 A CA2520747 A CA 2520747A CA 2520747 A1 CA2520747 A1 CA 2520747A1
- Authority
- CA
- Canada
- Prior art keywords
- stroke
- sensor
- electric
- electronic
- stroke indicator
- 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.)
- Granted
Links
Landscapes
- Valves And Accessory Devices For Braking Systems (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
Electronic stroke indicators have sensor structures (34, 60, 80, 110) which are incorporated into a stone shield (28, 62, 82, 116) for a brake actuator (20). The incorporation of the sensor (34, 66, 119) stone shield (28, 62, 116) protects the sensor (34, 60, 119) and its associated wires (50, 69, 121) and contacts from damage by the other components in the brake actuator (20). In particular, the spring is typically maintained out of contact with any of the electric portions of the electronic stroke indicator, thus prolonging the life of the electronic stroke indicator. In further features of this invention, a magnetic sensor (34) may monitor the position of magnetic portions (36) on a piston rod (32). Alternatively, a pair of electric contact switches (96, 98) may be serially contacted by a structure on the piston rod (94) as the broke moves further out of stroke. The two electric contacts (96, 98) provide different signals to an operator in a vehicle cab such that signals of the level of out-of-stroke conditions are provided to the operator. In a further embodiment, a load cell (119) monitors the compression in a spring (112) in the brake housing (111) to provide an indication of an out-of-stroke condition.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/164,396 | 1993-12-09 | ||
US08/164,396 US5450930A (en) | 1993-12-09 | 1993-12-09 | Heavy duty electronic brake stroke indicator |
CA002177992A CA2177992C (en) | 1993-12-09 | 1994-11-29 | Heavy duty electronic brake stroke indicator |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002177992A Division CA2177992C (en) | 1993-12-09 | 1994-11-29 | Heavy duty electronic brake stroke indicator |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2520747A1 true CA2520747A1 (en) | 1995-06-15 |
CA2520747C CA2520747C (en) | 2008-08-26 |
Family
ID=35253799
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002520747A Expired - Lifetime CA2520747C (en) | 1993-12-09 | 1994-11-29 | Heavy duty electronic brake stroke indicator |
CA002516010A Expired - Lifetime CA2516010C (en) | 1993-12-09 | 1994-11-29 | Heavy duty electronic brake stroke indicator |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002516010A Expired - Lifetime CA2516010C (en) | 1993-12-09 | 1994-11-29 | Heavy duty electronic brake stroke indicator |
Country Status (1)
Country | Link |
---|---|
CA (2) | CA2520747C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107764437A (en) * | 2017-10-30 | 2018-03-06 | 太原理工大学 | Drawing and pressing type concrete stress sensor |
EP4282720A1 (en) * | 2022-05-26 | 2023-11-29 | TSE Brakes, Inc. | Brake actuators and systems for monitoring stroke of brake actuators |
-
1994
- 1994-11-29 CA CA002520747A patent/CA2520747C/en not_active Expired - Lifetime
- 1994-11-29 CA CA002516010A patent/CA2516010C/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107764437A (en) * | 2017-10-30 | 2018-03-06 | 太原理工大学 | Drawing and pressing type concrete stress sensor |
CN107764437B (en) * | 2017-10-30 | 2023-10-31 | 太原理工大学 | Tension-compression type concrete stress sensor |
EP4282720A1 (en) * | 2022-05-26 | 2023-11-29 | TSE Brakes, Inc. | Brake actuators and systems for monitoring stroke of brake actuators |
Also Published As
Publication number | Publication date |
---|---|
CA2520747C (en) | 2008-08-26 |
CA2516010A1 (en) | 1995-06-15 |
CA2516010C (en) | 2007-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20141201 |