Pneumatic wheel lift synchronization
First Claim
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1. A self-synchronizing wheel lift system configured to lift a vehicle using compressed air, said lift system comprising:
- a plurality of pneumatic wheel lifts; and
a lift control system programmed to automatically synchronize the heights of said wheel lifts during vehicle lifting without causing any of said wheel lifts to completely stop during vehicle lifting,wherein each wheel lift includes a pneumatic three-way valve for controlling actuation of said wheel lift,wherein said lift control system comprises an electrical control system programmed to generate a pneumatic three-way valve control signal for each of said wheel lifts in said lift system,wherein each valve control signal comprises a pulse-width modulated signal that includes a period T, wherein for each period T said pulse-width modulated signal includes one on portion and one off portion.
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Abstract
A self-synchronizing wheel lift system configured to lift a vehicle using compressed air. The lift system comprises a plurality of pneumatic wheel lifts and a lift control system. The lift control system is configured to automatically synchronize the heights of the wheel lifts during vehicle lifting without causing any of the wheel lifts to completely stop during vehicle lifting.
26 Citations
12 Claims
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1. A self-synchronizing wheel lift system configured to lift a vehicle using compressed air, said lift system comprising:
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a plurality of pneumatic wheel lifts; and a lift control system programmed to automatically synchronize the heights of said wheel lifts during vehicle lifting without causing any of said wheel lifts to completely stop during vehicle lifting, wherein each wheel lift includes a pneumatic three-way valve for controlling actuation of said wheel lift, wherein said lift control system comprises an electrical control system programmed to generate a pneumatic three-way valve control signal for each of said wheel lifts in said lift system, wherein each valve control signal comprises a pulse-width modulated signal that includes a period T, wherein for each period T said pulse-width modulated signal includes one on portion and one off portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification