US3752268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Braking system
Assignee: Individual
•
Filing: 1971-05-12
•
Granted: 1973-08-14
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Expires: 1991-05-12
Abstract
Abstract The braking system for the braking of a part which is moving relative to another part, of the type including a brake cylinder which is charged with a fluid under pressure when the brake is off, and which pressure is relieved for braking purposes, the system comprising a pressure accumulator connected with the brake cylinder through a nonreturn valve to receive part of the fluid escaping from the cylinder, the accumulator containing a gas under pressure, the pressure of which gas determines the value of the initial braking force, and a deceleration regulator connected to the brake cylinder through a throttle valve, the deceleration regulator including a casing, a cut-off valve, a flywheel rotated by a spindle rotatably mounted in said casing and which is driven by an axle of the moving part so as to be capable of overruning with respect to the spindle to cause the cut-off valve to operate to stop the passage of fluid into the regulator when a predetermined deceleration value is reached, and spring means opposing overrunning of the flywheel, the force of which spring determines the deceleration rate.
Inventors
- 👤 H Gfeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:04
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/72; B60T8/74; B61; B61K; B61K7/00; B61K7/02; B61K7/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
221 words
A braking system for the braking of one part which is moving relative to another part, of the type including a brake cylinder which is charged with a fluid under pressure when the brake is off and which is relieved of pressure for braking purposes, the system comprising a pressure accumulator connected with the brake cylinder through a nonreturn valve to take up part of the fluid escaping from the cylinder, the accumulator containing a gas under pressure, the pressure of which gas determines the value of the initial braking force, and a deceleration regulator, a throttle valve connectinG said deceleration regulator with the cylinder, the deceleration regulator including a casing, a cutoff valve, a flywheel rotatably mounted in said casing on a spindle which is driven by an axle of the moving part, means coupling said flywheel and spindle which allow overrunning of the flywheel with respect to said spindle to cause the cut-off valve to stop the passage of fluid through the regulator when a predetermined deceleration value is reached, and a spiral spring in the regulator having one end fixed to the flywheel and the other to the spindle and exerting a force in opposition to overrunning of the flywheel up to the predetermined deceleration value which is defined by the degree of prestress on the spiral spring.
Claim 2
Dependent Claim
221 words
A braking system for the braking of one part which is moving relative to another part, of the type including a brake cylinder which is charged with a fluid under pressure when the brake is off and which is relieved of pressure for braking purposes, the system comprising a pressure accumulator connected with the brake cylinder through a nonreturn valve to take up part of the fluid escaping from the cylinder, the accumulator containing a gas under pressure, the pressure of which gas determines the value of the initial braking force, and a deceleration regulator, a throttle valve connectinG said deceleration regulator with the cylinder, the deceleration regulator including a casing, a cutoff valve, a flywheel rotatably mounted in said casing on a spindle which is driven by an axle of the moving part, means coupling said flywheel and spindle which allow overrunning of the flywheel with respect to said spindle to cause the cut-off valve to stop the passage of fluid through the regulator when a predetermined deceleration value is reached, and a spiral spring in the regulator having one end fixed to the flywheel and the other to the spindle and exerting a force in opposition to overrunning of the flywheel up to the predetermined deceleration value which is defined by the degree of prestress on the spiral spring.
Claim 3
Dependent Claim
147 words
A braking system as claimed in claim 1, in which the cut-off acting in conjunction with the flywheel is a rotary valve consisting of a circular valve body, which is rotatable on said spindle, means securing said valve body to the flywheel for rotation therewith, said valve body having radial passages therethrough, a section of the spindle containing one coaxial passage and a number of radial passages in communication therewith, these radial passages being aligned with those in the circular valve body so as to allow the fluid to pass when the cut-off is opened, the valve body closing the passages in the spindle when the flywheel gains on the spindle in opposition to the action of the spiral spring, said casing being provided with an outlet connected with a pipe, for the exit of the pressure fluid from the deceleration regulator when the cut-off is opened.
Claim 4
Dependent Claim
165 words
A braking system as claimed in claim 1, in which the cut-off acting in conjunction with the flywheel on the pressure fluid flowing through the regulator is a piston valve consisting of a piston, which moves axially in a coaxial bore in the spindle, and inlet and discharge ports arranged radially in a valve housing having a cylindrical piston seating; the piston deriving its motion from the flywheel through linkage members consisting of a ring mounted with freedom to slide longitudinally on the spindle and bearing at least one pin, which engages radially in a peripheral groove in the piston, the ring also containing in its periphery a helical guide groove, at least one pin fixed to the flywheel and engaging in the guide groove, in order to convert the rotary motion of the flywheel when, in opposition to the spiral spring acting between spindle and flywheel, it gains on the spindle, into motion of the valve piston, for the purpose of closing the cut-off.
Claim 5
Dependent Claim
43 words
A braking system as claimed in claim 3, in which the free end of the valve piston of the cut-off serves as the operating member for a tell-tale switch, which checks the position of the valve piston and is connected to an indicator.
Claim 6
Dependent Claim
61 words
A braking system as claimed in claim 3, in which the peripheral groove in the piston of the piston valve is a continuous curve having a pitch of, for example, 0.3 mm., so that the pin of the ring rotating with the spindle, as it engages in the peripheral groove, imparts oscillatory motion to the piston, to prevent frictional adhesion thereof.
Claim 7
Dependent Claim
95 words
A braking system as claimed in claim 1, in which the cylinder is a spring-loaded accumulating cylinder, including a pump for charging said cylinder with oil for taking the brake off, which cylinder, when relieved of pressure, operates the means of braking, said cylinder having an outlet, a brake valve for closing said outlet which brake valve is like-wise operated by said oil pressure means connecting said brake valve to an operating valve subjected to the same oil pressure, operation of the said latter valve serving to relieve the pressure acting on the brake valve.
Claim 8
Dependent Claim
68 words
A braking system as claimed in claim 6, in which said one part is a vehicle, which is moving relative to rails, and in which the vehicle is provided with four spring-loaded accumulating cylinders for applying the brakes to the rails and with four pressure accumulators associated with thE said cylinders and containing gas under pressure, as well as one deceleration regulator, one operating valve and one pump.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |