US3915262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid cooled disc brake
Assignee: Individual
•
Filing: 1973-03-14
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Granted: 1975-10-28
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Expires: 1993-03-14
Abstract
Abstract A full lined liquid cooled disc brake for a rotating shaft. The brake has a brake housing comprising two annular housing members fastened together at their outer circumference and providing a central opening. The shaft or a sleeve member connected with the shaft extend in this opening carrying at least one lamination. The brake housing may have an opening at the outer circumference for easily replacing the lamination without opening the coolant circulation. The brake has annular brake rings on opposite sides of and opposing a lamination. Each brake ring is cooled on its side opposite from its braking surface with coolant flowing therethrough. A continuously operable adjusting mechanism for taking up play may be included. The brake may include both a mechanical and a hydraulic operating mechanism for urging the thrust rings towards each other to operate the brake.
Inventors
- 👤 Hermann Klaue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:42
CPC Classifications
B; B60; B60T; B60T1/00; B60T1/02; B60T1/06; B60T1/062; F; F16; F16D; F16D55/00; F16D55/24; F16D55/26; F16D55/28; F16D55/32; F16D55/36; F16D55/40; F16D55/46; F16D65/00; F16D65/14; F16D65/16; F16D65/18; F16D65/186; F16D65/78; F16D65/84; F16D65/853; F16D2055/0004; F16D2055/0058; F16D65/02; F16D2065/13; F16D2065/134; F16D2065/1356; F16D2065/1368; F16D2065/784; F16D2121/00; F16D2121/02; F16D2121/14; F16D2123/00; F16D2125/00; F16D2125/18; F16D2125/20; F16D2125/34; F16D2125/36
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
374 words
A liquid cooled disc brake for braking a rotatable member against rotation, comprising: a stationary housing, a shaft to be braked extending axially through the housing, a brake disc means comprising at least one brake disc, mounting means for mounting the brake disc means for limited axial movement relative to the shaft and for rotational movement with tHe shaft, said mounting means being movable axially out of the plane of the brake disc means to permit the brake disc means to be removed directly from its operating position, in a radial plane, out of the housing, a brake ring fixedly connected to the housing and having a braking surface adjacent to and facing one side of the brake disc means, a thrust ring having a braking surface adjacent to and facing the opposite side of the brake disc means, means for mounting the thrust ring in the housing for axial movement relative to the housing against and apart from the brake disc means while preventing circumferential movement of the thrust ring about the shaft axis, actuating means for moving the thrust ring axially during a braking operation to urge the brake disc means and the braking surfaces against each other, each of said brake ring and thrust ring including, on the sides of their braking surfaces opposite from the brake disc means, means defining a coolant flow path for the flow of liquid for cooling the brake, the coolant flow path associated with each ring comprising at least two concentric interconnected annular channels, a fluid inlet means and a fluid outlet means including a fluid inlet opening in one channel, a fluid outlet opening in another of said channels, the said inlet and outlet openings being arranged such that fluid flows from the inlet opening through all of the channels of that ring in succession and then through the outlet opening, whereby the coolant circulates more than once around each ring, and means for defining an opening in the housing in the plane of the brake disc means for installation and removal of the brake disc means in a radial direction out from between the brake ring and thrust ring without moving said rings and hence also without disturbing the coolant liquid flow channels.
Claim 2
Dependent Claim
374 words
A liquid cooled disc brake for braking a rotatable member against rotation, comprising: a stationary housing, a shaft to be braked extending axially through the housing, a brake disc means comprising at least one brake disc, mounting means for mounting the brake disc means for limited axial movement relative to the shaft and for rotational movement with tHe shaft, said mounting means being movable axially out of the plane of the brake disc means to permit the brake disc means to be removed directly from its operating position, in a radial plane, out of the housing, a brake ring fixedly connected to the housing and having a braking surface adjacent to and facing one side of the brake disc means, a thrust ring having a braking surface adjacent to and facing the opposite side of the brake disc means, means for mounting the thrust ring in the housing for axial movement relative to the housing against and apart from the brake disc means while preventing circumferential movement of the thrust ring about the shaft axis, actuating means for moving the thrust ring axially during a braking operation to urge the brake disc means and the braking surfaces against each other, each of said brake ring and thrust ring including, on the sides of their braking surfaces opposite from the brake disc means, means defining a coolant flow path for the flow of liquid for cooling the brake, the coolant flow path associated with each ring comprising at least two concentric interconnected annular channels, a fluid inlet means and a fluid outlet means including a fluid inlet opening in one channel, a fluid outlet opening in another of said channels, the said inlet and outlet openings being arranged such that fluid flows from the inlet opening through all of the channels of that ring in succession and then through the outlet opening, whereby the coolant circulates more than once around each ring, and means for defining an opening in the housing in the plane of the brake disc means for installation and removal of the brake disc means in a radial direction out from between the brake ring and thrust ring without moving said rings and hence also without disturbing the coolant liquid flow channels.
Claim 3
Dependent Claim
33 words
A disc brake according to claim 1, said actuating means comprising a hydraulic actuating means including a cylinder in the housing and a piston in the cylinder operatively engaging with the thrust ring.
Claim 4
Dependent Claim
43 words
A disc brake according to claim 1, said actuating means comprising a mechanical actuating means including a spreading means for moving the thrust ring against the brake disc means to operate the brake when the spreading means is rotated about the shaft axis.
Claim 5
Dependent Claim
73 words
A disc brake according to claim 1, the means defining the channels of each ring including an annular recess on the side of the ring opposite from the braking surface, inner, outer and central annular flanges projecting into the recess, sealing means sealing the inner and outer flanges against the radial inside and outside of the recess, respectively, and the central flange constituting a rib separating the recess into said two concentric channels.
Claim 6
Dependent Claim
31 words
A disc brake according to claim 4, all three flanges being integral with their ring and extending outwardly therefrom, a portion of the housing closing the other side of said channels.
Claim 7
Dependent Claim
43 words
A disc brake according to claim 4, the inner and outer flanges being integral with their ring, and the housing closing the other side of the channel, the central flange being integral with the housing and extending therefrom into and across the recess.
Claim 8
Dependent Claim
44 words
A disc brake according to claim 4, the inner and outer flanges being integral with their respective ring, and a separate element forming the central flange, and a backing plate closing the other side of the channels and sealingly connected to its respective ring.
Claim 9
Dependent Claim
16 words
A disc brake according to claim 7, said backing plate being soldered to its respective ring.
Claim 10
Dependent Claim
35 words
A disc brake according to claim 4, all of said flanges and the side opposite from said braking surface of the ring being integral, the coolant channels thus being contained wholly within their respective ring.
Claim 11
Dependent Claim
22 words
A disc brake according to claim 1, said coolant channels being integral with and formed as sealed channels within their respective ring.
Claim 12
Dependent Claim
41 words
A disc brake according to claim 1, said means definIng an opening comprising a space formed in the stationary housing large enough for the brake disc means to be installed and removed therethrough, and a removable cover plate covering said space.
Claim 13
Dependent Claim
69 words
A disc brake according to claim 1, said mounting means for the disc brake means comprising a sleeve member projecting axially into the housing, the shaft rotatably engaging the inside of the sleeve and the brake disc means engaging the exterior of the sleeve for rotation therewith and for axial movement therealong, the sleeve being removable axially from the space between the planes of the said ring braking surfaces.
Claim 14
Dependent Claim
45 words
A disc brake according to claim 1 wherein the floor path cross-section of said channels from said inlet means to said outlet means is constant and the coolant system is designed for a fluid speed of one to three meters per second in said channels.
Claim 15
Dependent Claim
118 words
A disc brake according to claim 1, said brake disc means including a group of at least two parallel brake discs, said brake ring and said thrust ring located on opposite sides of the group, and including, in the space between adajcent brake discs, a further brake ring having braking surfaces facing each adjacent brake disc and including means defining a said coolant fluid path within said further brake ring, said further brake ring being axially movable within the housing such that when the actuating means moves the thrust ring, the further braking ring is also movable so that all of the braking surfaces and the brake discs can be urged against each other for a braking operation.
Claim 16
Dependent Claim
37 words
A disc brake according to claim 1, said actuating means comprising both a mechanical actuating device and a hydraulic actuating device, these two devices being operable either together or independently of each other to actuate the brake.
Claim 17
Dependent Claim
29 words
A disc brake according to claim 15, said hydraulic actuating device including a cylinder in the housing and a piston in the cylinder operatively engaging with the thrust ring.
Claim 18
Dependent Claim
39 words
A disc brake according to claim 15, said mechanical actuating device including a spreading means for moving the thrust ring against the brake disc means to operate the brake when the spreading means is rotated about the shaft axis.
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |