Patent US3869024A successfully refreshed from Google Patents.
US3869024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self releasing brake device
Assignee: Pont a Mousson SA
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Filing: 1973-07-06
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Granted: 1975-03-04
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Expires: 1993-07-06
Abstract
Abstract For a moving element such as a disc. Two brake sub-assemblies are mounted on each side of the element on a support which is slidable in a direction perpendicular to the rubbing surfaces of the moving element. Each sub-assembly comprises a brake pad having a friction surface parallel to the corresponding rubbing surface of the moving element and an opposed inclined surface parallel to a support surface of support means fixed to the support, the inclined surface cooperating with the support surface and actuating means connected to the pad for urging the pad in a direction substantially opposed to the direction of movement of the moving element. The two sub-assemblies are oriented in opposite directions on each side of the moving element. Each sub-assembly includes means for ensuring, in each direction of movement of the moving element, that one of the pads is selectively rendered integral with the support.
Inventors
- 👤 Jean-Marc Hauth
- 👤 Roland Claude Michel Cheylac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:54
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/24; F16D55/46; F16D55/02; F16D55/22; F16D55/228; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/56; F16D65/567; F16D2125/00; F16D2125/18; F16D2125/58; F16D2125/66; F16D2127/00; F16D2127/08; F16D2127/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
339 words
A self-releasing device for braking a moving element movable in opposite directions, such as a disc, having two parallel rubbing surfaces, the device comprising a support; two brake subassemblies disposed one on each side of the moving element on the support; each sub-assembly comprising support means fixed to the support and having a support surface slightly inclined with respect to the corresponding adjacent rubbing surface of the moving element, means defining a brake pad having a friction surface parallel to the corresponding rubbing surface and an inclined surface parallel to the corresponding support surface and co-operative with the support surface, actuating means connected to the pad and arranged to act on the pad in a direction for causing the pad to effect a given displacement relative to the support for braking; the two brake sub-assemblies being oriented in opposite directions on each side of the moving element so that, for a given direction of movement of the moving element and upon braking, a first of the two brake pads of the two sub-assemblies is self-releasing and a second of said two brake pads tends to be drawn along by the moving element in a direction corresponding to said displacement for braking and, in an opposite direction of movement of the moving element, said first brake pad tends to be drawn along by the moving element in a direction corresponding to said displacement for braking and said second brake pad is self-releasing, the support being capable of moving relative to the moving element in a direction substantially perpendicular to the rubbing surfaces; each subassembly having further means responsive to the direction of movement of the moving element for automatically arresting, in each direction of movement of the moving element, the braking displacement relative to the support of that one of the two brake pads which tends to be drawn along by the moving element in a direction for effecting its braking displacement before the other brake pad has reached the end of its given braking displacement relative to the support.
Claim 2
Dependent Claim
339 words
A self-releasing device for braking a moving element movable in opposite directions, such as a disc, having two parallel rubbing surfaces, the device comprising a support; two brake subassemblies disposed one on each side of the moving element on the support; each sub-assembly comprising support means fixed to the support and having a support surface slightly inclined with respect to the corresponding adjacent rubbing surface of the moving element, means defining a brake pad having a friction surface parallel to the corresponding rubbing surface and an inclined surface parallel to the corresponding support surface and co-operative with the support surface, actuating means connected to the pad and arranged to act on the pad in a direction for causing the pad to effect a given displacement relative to the support for braking; the two brake sub-assemblies being oriented in opposite directions on each side of the moving element so that, for a given direction of movement of the moving element and upon braking, a first of the two brake pads of the two sub-assemblies is self-releasing and a second of said two brake pads tends to be drawn along by the moving element in a direction corresponding to said displacement for braking and, in an opposite direction of movement of the moving element, said first brake pad tends to be drawn along by the moving element in a direction corresponding to said displacement for braking and said second brake pad is self-releasing, the support being capable of moving relative to the moving element in a direction substantially perpendicular to the rubbing surfaces; each subassembly having further means responsive to the direction of movement of the moving element for automatically arresting, in each direction of movement of the moving element, the braking displacement relative to the support of that one of the two brake pads which tends to be drawn along by the moving element in a direction for effecting its braking displacement before the other brake pad has reached the end of its given braking displacement relative to the support.
Claim 3
Dependent Claim
54 words
A device as claimed in claim 1, wherein said further means comprise an end-of-travel abutment system included in the actuating means for each pad which abutment system is capable of stopping operation of said actuating means and preventing movement of the associated pad in said displacement thereof with respect to the support for braking.
Claim 4
Dependent Claim
56 words
A device as claimed in claim 2, wherein the actuating means comprise a fluid cylinder device having a cylinder fixed to the support and a piston movable within the cylinder and said abutment system comprises an arrangement in which arrangement the piston of the cylinder device encounters an end of the cylinder of the cylinder device.
Claim 5
Dependent Claim
65 words
A device as claimed in claim 1, wherein each subassembly comprises a device for taking up wear of the pad, the device for taking up wear carrying the support means and acting along an axis which is slightly inclined with respect to the perpendicular to the rubbing surface, the axes of the two devices for taking up wear being in the extension of each other.
Claim 6
Dependent Claim
47 words
A device as claimed in claim 4, wherein each device for taking up wear is adapted to be unidirectional in operation, that is to say operative in one direction of movement of the moving element and neutralized in the other direction of movement of the moving element.
Claim 7
Dependent Claim
83 words
A device as claimed in claim 5, wherein the device for taking up wear which is mounted on the side of the moving element corresponding to the pad which is self-releasing is operative in the event of wear of the pad whereas the device for taking up wear mounted on the opposite side of the moving element corresponding to the pad which tends to be drawn along by the moving element in the direction corresponding to said displacement thereof for braking is neutralized.
Claim 8
Dependent Claim
53 words
A device as claimed in claim 1, wherein in the case where the moving element is capable of moving mostly in a single direction, a device for taking up wear is provided for the pad which is self-releasing, the support surface for the other pad being fixed in position relative to the support.
Claim 9
Dependent Claim
36 words
A device as claimed in claim 7, wherein the device for taking up wear carries the support means and acts along an axis which is slightly inclined with respect to the perpendicular to the rubbing surface.
Claim 10
Independent Claim
637 words
A device for braking a moving element movable in opposite directions, such as a disc, having two parallel rubbing surfaces, the device comprising a support; two brake sub-assemblies disposed one on each side of the moving element on the support; each sub-assembly comprising support means fixed to the support and having a support surface slightly inclined with respect to the corresponding adjacent rubbing surfaCe of the moving element, means defining a brake pad having a friction surface parallel to the corresponding rubbing surface and an inclined surface parallel to the corresponding support surface and co-operative with the support surface, actuating means connected to the pad and arranged to act on the pad in a direction for causing the pad to effect a movement relative to the support for braking the moving element; the two brake sub-assemblies being oriented in opposite directions on each side of the moving element so that one of said brake pads is self-releasing and the other brake pad tends to be drawn along by the moving element in a direction corresponding to said movement thereof for braking in one direction of movement of the moving element and vice-versa in the other direction of movement of the moving element, the support being capable of moving in a direction substantially perpendicular to the rubbing surfaces, each sub-assembly having further means responsive to the direction of movement of the moving element for stopping, in one direction of movement of the moving element, a braking movement relative to the support of one of the brake pads and stopping, in the opposite direction of movement of the moving element, a braking movement relative to the support of the other of said brake pads, whereby the braking device operates in the manner of a brake device having a brake pad stationary on the support on one side of the moving element and a brake pad operative to be applied against the moving element on the other side of the moving element in each direction of movement of the moving element, devices for taking up wear of each pad, each of said devices comprising a nut movable in translation but prevented from rotating relative to the support and integral with the pad, a screw screwthreadedly co-operative with said nut and rotatable but axially stationary relative to the support, a ratched and pawl system operatively connected to the screw to rotate the screw, an abutment member integral with the pad, a rockable lever supported relative to the support and having a first end portion and a second end portion opposed to the first end portion relative to an axis about which the lever is rockable, the ratchet and pawl system being actuated by the abutment member through the rockable lever which transmits the motion of the pad, each ratchet and pawl system comprising one pair of parallel ratchets connected to rotate with the screw but with a given angular play, the two ratchets having ratchet teeth of identical angular division, that is to say, having the same number of ratchet teeth which are disposed in reverse directions, a pin slidable relative to the support in a path parallel to the path of movement of the pad, the second portion of the rockable lever being engaged with the pin for sliding the pin when the pad undergoes wear, two parallel pawls carried by the pin to move with the pin and respectively co-operative with the two ratchets, one of the ratchets serving to take up wear and the other of the ratchets serving to neutralize that one of the two devices for taking up wear which is located on the same side of the moving element as the pad which tends to be drawn along by the moving element in the direction corresponding to said movement thereof for braking the moving element.
Claim 11
Independent Claim
637 words
A device for braking a moving element movable in opposite directions, such as a disc, having two parallel rubbing surfaces, the device comprising a support; two brake sub-assemblies disposed one on each side of the moving element on the support; each sub-assembly comprising support means fixed to the support and having a support surface slightly inclined with respect to the corresponding adjacent rubbing surfaCe of the moving element, means defining a brake pad having a friction surface parallel to the corresponding rubbing surface and an inclined surface parallel to the corresponding support surface and co-operative with the support surface, actuating means connected to the pad and arranged to act on the pad in a direction for causing the pad to effect a movement relative to the support for braking the moving element; the two brake sub-assemblies being oriented in opposite directions on each side of the moving element so that one of said brake pads is self-releasing and the other brake pad tends to be drawn along by the moving element in a direction corresponding to said movement thereof for braking in one direction of movement of the moving element and vice-versa in the other direction of movement of the moving element, the support being capable of moving in a direction substantially perpendicular to the rubbing surfaces, each sub-assembly having further means responsive to the direction of movement of the moving element for stopping, in one direction of movement of the moving element, a braking movement relative to the support of one of the brake pads and stopping, in the opposite direction of movement of the moving element, a braking movement relative to the support of the other of said brake pads, whereby the braking device operates in the manner of a brake device having a brake pad stationary on the support on one side of the moving element and a brake pad operative to be applied against the moving element on the other side of the moving element in each direction of movement of the moving element, devices for taking up wear of each pad, each of said devices comprising a nut movable in translation but prevented from rotating relative to the support and integral with the pad, a screw screwthreadedly co-operative with said nut and rotatable but axially stationary relative to the support, a ratched and pawl system operatively connected to the screw to rotate the screw, an abutment member integral with the pad, a rockable lever supported relative to the support and having a first end portion and a second end portion opposed to the first end portion relative to an axis about which the lever is rockable, the ratchet and pawl system being actuated by the abutment member through the rockable lever which transmits the motion of the pad, each ratchet and pawl system comprising one pair of parallel ratchets connected to rotate with the screw but with a given angular play, the two ratchets having ratchet teeth of identical angular division, that is to say, having the same number of ratchet teeth which are disposed in reverse directions, a pin slidable relative to the support in a path parallel to the path of movement of the pad, the second portion of the rockable lever being engaged with the pin for sliding the pin when the pad undergoes wear, two parallel pawls carried by the pin to move with the pin and respectively co-operative with the two ratchets, one of the ratchets serving to take up wear and the other of the ratchets serving to neutralize that one of the two devices for taking up wear which is located on the same side of the moving element as the pad which tends to be drawn along by the moving element in the direction corresponding to said movement thereof for braking the moving element.
Claim 12
Dependent Claim
44 words
A device as claimed in claim 9, wherein the rotation of the neutralizing ratchet corresponds to the travel of the pad which tends to be drawn along by the moving element in the direction corresponding to said movement thereof for braking the moving element.
Claim 13
Dependent Claim
67 words
A device as claimed in claim 9, wherein the length of each tooth of the ratchet for taking up wear corresponds to the travel of the pad for braking relative to the support means and the length of one tooth of the neutralizing ratchet corresponds to a travel exceeding that of said each tooth but modified in accordance with the ratio between the diameters of the ratchets.
Claim 14
Dependent Claim
32 words
A device as claimed in claim 9, wherein the paralleL pawls are spaced apart a distance slightly greater than the sum of the lengths of the respective teeth of the two ratchets.
Claim 15
Dependent Claim
36 words
A device as claimed in claim 9, wherein the ratchets are connected to rotate with a member having a recess defining an angular clearance with a screwthreaded member carried by and extending radially of the screw.
Claim 16
Dependent Claim
87 words
A device as claimed in claim 13, wherein said angular clearance afforded by the recess is equal to the angle of rotation through one tooth of the ratchet for taking up wear and the recess is combined with the screwthreaded member in such manner that the screw is driven in rotation by rotation of the ratchet for taking up wear in the direction for taking up wear but not by the rotation of the neutralizing ratchet in the direction opposed to the direction for taking up wear.
Claim 17
Dependent Claim
25 words
A device as claimed in claim 9, wherein the neutralizing ratchet has a diameter less than the diameter of the ratchet for taking up wear.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |