Brake system
US9487264B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2014 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Sep 12, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K23/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake system for a bicycle is disclosed. The brake system comprises an actuation mechanism shown as a master cylinder assembly and a brake or brake mechanism for the wheels of the bicycle. The mechanism/assembly comprises (among other parts, components and assemblies) a body or housing, a piston assembly, an actuating lever on a pivot pin, a bladder, a retainer and a primary seal. The bladder is fixed at a first end to the piston and fixed at a second end to the retainer. A reservoir is defined by the piston, the body, and the bladder. Advancement of the piston along the stroke causes the piston to seal against a primary seal and separate the reservoir from a pressure chamber in the body. A retainer may be provided to seal the bladder to the body, act as a piston guide bushing, act as a pivot bushing, and act as a stroke limiter. Upon advancement the piston will contact the primary seal and separate the reservoir from the pressure chamber as the bladder rolls out thus pressurizing the fluid. Stroke is limited at one end by a feature on the retainer which contacts the cam surface on the lever preventing further rotation/movement and at the other end by a stop pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.