Patent US4698971A successfully refreshed from Google Patents.
US4698971A
Expired / Lapsed
US
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Control device for a twin master cylinder
Assignee: Bendix France SA
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Filing: 1986-02-06
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Granted: 1987-10-13
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Expires: 2006-02-06
Abstract
Abstract Control device (10) for a twin master cylinder (18) of the type with two master cylinders situated side by side and parallel to each another; the device (10) being capable of being positioned between an actuating pedal (12) and pistons (26, 26') of the master cylinders. According to the invention the device (10) incorporates a twin beam (36) ensuring balancing of the forces applied to each of the pistons (26, 26') while ensuring the rigidity of the control device (10), and the twin beam (36) incorporates a device for maintaining the separation of the points of application (32, 32') of the forces on the pistons (26, 26').
Inventors
- 👤 Serge Sansone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:03
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/101; B60T11/16; B60T11/20; B60T11/203; B60T11/206; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20528
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
200 words
A control device for a twin master cylinder of the type having two master cylinders situated side by side and parallel to one another, the control device positioned between an actuating pedal and piston of the master cylinders, characterized in that the control device includes twin beams which ensure a balancing of forces applied to the pistons while also ensuring rigidity of the control device, the twin beams comprising two push rods capable of pushing the pistons and a device for maintaining a separation of points where the forces are applied to the pistons, the maintaining device comprising first and second connecting components, the push rods joined together by the connecting components which are rigid and axially spaced apart from one another, the connecting components hinged to the push rods and a control rod capable of being pushed by the pedal, at least one of the connecting components hinged at a middle area to the control rod, each push rod including a spherical end cooperating with a cavity having a spherical bottom which is formed in the respective piston, and the second connecting component positioned next to the master cylinder and hinged to each push rod with a clearance therebetween.
Claim 2
Dependent Claim
200 words
A control device for a twin master cylinder of the type having two master cylinders situated side by side and parallel to one another, the control device positioned between an actuating pedal and piston of the master cylinders, characterized in that the control device includes twin beams which ensure a balancing of forces applied to the pistons while also ensuring rigidity of the control device, the twin beams comprising two push rods capable of pushing the pistons and a device for maintaining a separation of points where the forces are applied to the pistons, the maintaining device comprising first and second connecting components, the push rods joined together by the connecting components which are rigid and axially spaced apart from one another, the connecting components hinged to the push rods and a control rod capable of being pushed by the pedal, at least one of the connecting components hinged at a middle area to the control rod, each push rod including a spherical end cooperating with a cavity having a spherical bottom which is formed in the respective piston, and the second connecting component positioned next to the master cylinder and hinged to each push rod with a clearance therebetween.
Claim 3
Dependent Claim
32 words
The control device according to claim 1, characterized in that each of the connecting components is formed by two identical components situated on each side of the contol rod and push rods.
Claim 4
Dependent Claim
205 words
A control device for a twin master cylinder of the type having two master cylinders situated side by side and parallel to one another, the control device positioned between an actuating pedal and piston of the master cylinders, characterized in that the control device includes twin beams which ensure a balancing of forces applied to the pistons while also ensuring rigidity of the control device, the twin beams comprising two push rods capable of pushing the pistons and a device for maintaining a sparation of points where the forces are applied to the pistons, the maintaining device comprising first and second connecting components, the push rods joined together by the connecting components which are rigid and axially spaced apart from one another, the connecting components hinged to the push rods and a control rod capable of being pushed by the pedal, at least one of the connecting components hinged at a middle area to the control rod, the second connecting component situated next to the master cylinder and hinged without clearance to the control rod and only one of the push rods, each of the push rods including a spherical end cooperating with a cavity having a spherical bottom formed in one of the pistons.
Claim 5
Dependent Claim
205 words
A control device for a twin master cylinder of the type having two master cylinders situated side by side and parallel to one another, the control device positioned between an actuating pedal and piston of the master cylinders, characterized in that the control device includes twin beams which ensure a balancing of forces applied to the pistons while also ensuring rigidity of the control device, the twin beams comprising two push rods capable of pushing the pistons and a device for maintaining a sparation of points where the forces are applied to the pistons, the maintaining device comprising first and second connecting components, the push rods joined together by the connecting components which are rigid and axially spaced apart from one another, the connecting components hinged to the push rods and a control rod capable of being pushed by the pedal, at least one of the connecting components hinged at a middle area to the control rod, the second connecting component situated next to the master cylinder and hinged without clearance to the control rod and only one of the push rods, each of the push rods including a spherical end cooperating with a cavity having a spherical bottom formed in one of the pistons.
Claim 6
Dependent Claim
32 words
The control device according to claim 3, characterized in that each of the connecting components is formed by two identical components situated on each side of the control rod and push rods.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |