Patent US4027750A successfully refreshed from Google Patents.
US4027750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating disc brake including air escape structure
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1976-04-15
•
Granted: 1977-06-07
•
Expires: 1996-04-15
Abstract
Abstract A floating disc brake is diclosed having a caliper which is guided by pins therein which slide axially within blind holes provided in a fixed member. At least one of the pins is enclosed in a resilient bag having air passages therein for permitting the compressed air in the blind hole to escape.
Inventors
- 👤 Kyoji Kawamoto
- 👤 Yosuke Ishihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:40
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/225; F16D55/226; F16D55/2265; F16D55/22655; F16D55/227
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
In a floating disc brake of the type having, a fixed member spanning said disc, a piston and a first pad positioned on one side of said disc, a caliper spanning said disc and a second pad on the other side of said disc, said caliper, piston and pads being arranged to press both pads in a direction towards said disc when said piston operates, a pair of guide pins fixed to said caliper and extending parallel to the axis of said disc and a pair of corresponding blind holes in said fixed member for slidably receiving said pins, each said blind hole having a receiving end and a blind end, the improvement comprising, at least one of said pins being enclosed in a resilient bag movable therewith, said bag having a groove therein providing an air passageway between said blind end of said bline hole and the space external to said blind hole during normal operation.
Claim 2
Dependent Claim
157 words
In a floating disc brake of the type having, a fixed member spanning said disc, a piston and a first pad positioned on one side of said disc, a caliper spanning said disc and a second pad on the other side of said disc, said caliper, piston and pads being arranged to press both pads in a direction towards said disc when said piston operates, a pair of guide pins fixed to said caliper and extending parallel to the axis of said disc and a pair of corresponding blind holes in said fixed member for slidably receiving said pins, each said blind hole having a receiving end and a blind end, the improvement comprising, at least one of said pins being enclosed in a resilient bag movable therewith, said bag having a groove therein providing an air passageway between said blind end of said bline hole and the space external to said blind hole during normal operation.
Claim 3
Dependent Claim
38 words
A floating disc brake as claimed in claim 1 wherein said bag has a hole therein at a point nearest said blind end of said blind hole, and said groove is on the internal side of said bag.
Claim 4
Dependent Claim
20 words
A floating disc brake as claimed in claim 1 wherein said groove is on the external side of said bag.
Claim 5
Dependent Claim
21 words
A floating disc brake as claimed in claim 1 wherein only one of said pins is enclosed in a resilient bag.
Claim 6
Dependent Claim
18 words
A floating disc brake as claimed in claim 1 wherein both said pins are enclosed in resilient bags.
Claim 7
Dependent Claim
24 words
A floating disc brake as claimed in claim 1 wherein said groove is a helical groove provided on the entire surface of said bag.
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) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |