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| Number | Title | Issue Date |
| 5076142 | Brake booster with tandem pistons having annular and radial reinforcing ribs and connected by hooks and slots A servomotor having a partition for separating a first chamber from a second chamber. The partition has a hub with passages therein connecting the first and second chambers with each other and to the atmosphere. The partition has a plurality of concentric... | 12/31/1991 |
| 5007239 | Master cylinder with sandwiched communication interfaces The master cylinder (10) comprises a front or first housing part (12) which is generally U-shaped and a second or rear housing part (14) which is also generally U-shaped, the second housing part (14) being received within an end opening of the first housi... | 04/16/1991 |
| 4908522 | Pressure-balanced proportioning valve with vent-controlled bypass A proportioning valve (40) is disposed within a stepped bore (13) of a master cylinder (10). The proportioning valve (40) defines with the stepped bore (13) a primary pressure receiving chamber (26) and a secondary pressure receiving chamber (28). The pro... | 03/13/1990 |
| 4903387 | Method for making a proportioning valve having a unitary poppet valve assembly The unitary poppet valve assembly (50) comprises an annular retainer (52) having an open end (54) and an opposite end (55) with a small diameter opening (56) therein. The annular retainer (52) has a plurality of fingers (58) extending laterally therefrom ... | 02/27/1990 |
| 4860541 | Two stage relief valve for master cylinder quick-fill chamber A two stage relief valve for a quick-fill master cylinder (10). The two stage relief valve (54) has a ball (88) that is biased against a first seat (82) to control the flow of fluid from a quick-fill chamber (30) and a unitary structure (55, 74) which is ... | 08/29/1989 |
| 4821519 | Primary pressure-balanced proportioning valve The proportioning valve assembly (40, 140) may be screwed into a complementary-shaped opening in a master cylinder (10). The valve assembly (40, 140) includes a differential area piston (50, 150) biased by a spring (70, 170) toward the outlet (21, 121) wh... | 04/18/1989 |
| 4790138 | Master cylinder fast fill valving mechanism with ramp A master cylinder (10, 210, 310, 410) includes a housing bore (14) having at one end (16) a bearing member (18) attached thereto and retaining a sleeve member (20) within the bore (14). One piston (30, 230, 530) has at one end (32, 232) thereof a fast fil... | 12/13/1988 |
| 4785847 | Unitary poppet valve assembly for a proportioning valve The unitary poppet valve assembly (50) comprises an annular retainer (52) having an open end (54) and an opposite end (55) with a small diameter opening (56) therein. The annular retainer (52) has a plurality of fingers (58) extending laterally therefrom ... | 11/22/1988 |
| 4718234 | Fast fill valving mechanism for a master cylinder The master cylinder (10) comprises a housing (12) having a longitudinal bore (14), an end (24) enclosed by a bearing member (18) which retains a sleeve member (20) within the bore (14), a reservoir (70) mounted on the housing (12) and a pair of pistons (3... | 01/12/1988 |
| 4685300 | Seal means for a master cylinder A master cylinder (10) having a sleeve (24) for positioning first (22) and second (30) seal members within a bore (14) of the housing (12). The first (22) and second (30) members each have a primary seal (52), a retainer (58) and secondary seals (54 or 55... | 08/11/1987 |
| 4630443 | Reservoir for a master cylinder A reservoir (20) for a master cylinder (16) has a body (22) with an end member (82) attached thereto by tangs (92, 92' . . . 92N) that engage a surface (69) on a flange (70). A shoulder (86) concentric to peripheral lip (84) on the end member (... | 12/23/1986 |
| 4559781 | Master cylinder A master cylinder includes a housing with a pair of pistons movable therein to develop fluid pressure in a pair of pressure chambers. One of the pistons carries a seal assembly in order to provide a fast-fill feature. The seal assembly engages a large dia... | 12/24/1985 |
| 4510753 | Master cylinder A fast-fill master cylinder (14) includes a housing (26) defining a bore (38) therein having a portion (y) thereof of substantially constant diameter. A primary piston (54) is movably received in the bore portion (y) and a secondary piston (56) is movably... | 04/16/1985 |
| 4489224 | Fluid level indicator A fluid level indicator is provided for a master cylinder to generate a signal in response to the fluid level reaching a predetermined level. The fluid level indicator includes a carrier assembly for holding a magnet and moving the same within a master cy... | 12/18/1984 |
| 4474005 | Master cylinder A master cylinder includes a housing (12) with a bore (14) receiving a pair of pistons (32, 34). A bearing (50) extends from the housing (12) to one of the pistons (32) to define a passage (65) communicating fluid to a pressure chamber (40). The bearing (... | 10/02/1984 |
| 4212411 | Master cylinder reservoir cover A cover for a reservoir of a master cylinder. The housing of the master cylinder has a plurality of vertical slots located in a flange that surrounds the reservoir. Each of the vertical slots is connected to a locking surface by a slanted surface on the f... | 07/15/1980 |
