Frictionless electronic safety actuator
US-2024051794-A1 · Feb 15, 2024 · US
Molybdenum coated elevator safety brakes
US2019011007A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019011007-A1 |
| Application number | US-201716068008-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 4, 2017 |
| Priority date | Jan 4, 2016 |
| Publication date | Jan 10, 2019 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An elevator safety brake for stopping an elevator car, the brake including a brake shoe including a base, and a brake pad disposed on the base, wherein the brake pad includes a rail contacting friction surface for contacting an elevator guide rail surface, wherein the brake pad is fuse bonded to the base, wherein the brake pad is chosen from a group consisting of: molybdenum and molybdenum alloys.
First claim
Opening claim text (preview).
What is claimed is: 1 . An elevator safety brake for stopping an elevator car, the brake comprising: a brake shoe including a base; and a brake pad disposed on the base, wherein the brake pad includes a rail contacting friction surface for contacting an elevator guide rail surface, wherein the brake pad is fuse bonded to the base; wherein the brake pad is chosen from a group consisting of: molybdenum and molybdenum alloys. 2 . The elevator safety brake of claim 1 , wherein the base comprises a high compressive strength structural alloy. 3 . The elevator safety brake of claim 2 , wherein the high compressive strength structural alloy is chosen from a group consisting of: steel and cast iron. 4 . The elevator safety brake of claim 2 , wherein the brake pad is fuse bonded to the brake base via a fusion welding process. 5 . The elevator safety brake of claim 4 , wherein the fusion welding process comprises an arc welding process. 6 . The elevator safety brake of claim 1 , further comprising an interface layer disposed between the base and the brake pad, wherein the interface layer is fuse bonded to the base and the brake pad. 7 . The elevator safety brake of claim 1 , wherein the interface layer is chosen from a group consisting of: chrome, iron, nickel, nickel alloys, cobalt, and cobalt alloys. 8 . The elevator safety brake of claim 1 , wherein the rail contacting friction surface includes surface features disposed thereon, wherein the surface features are configured to provide at least one of increased friction of the brake pad and wear indication of the brake pad. 9 . The elevator safety brake of claim 8 , wherein the surface features include at least one raised feature deposited onto at least one of the brake pad and the base. 10 . The elevator safety brake of claim 9 , wherein the at least one raised feature is non-continuously applied to at least one of the brake pad and the base. 11 . The elevator safety brake of claim 9 , wherein the at least one raised feature includes a plurality of dots. 12 . The elevator safety brake of claim 9 , wherein the at least one raised feature includes a plurality of line segments.
Assignees
Inventors
Classifications
- B66B5/22Primary
by means of linearly-movable wedges (B66B5/24 takes precedence) · CPC title
Attachment of linings · CPC title
Combination of different friction materials · CPC title
- F16D69/027Primary
Compositions based on metals or inorganic oxides · CPC title
having wedging elements · CPC title
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Frequently asked questions
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- What does patent US2019011007A1 cover?
- An elevator safety brake for stopping an elevator car, the brake including a brake shoe including a base, and a brake pad disposed on the base, wherein the brake pad includes a rail contacting friction surface for contacting an elevator guide rail surface, wherein the brake pad is fuse bonded to the base, wherein the brake pad is chosen from a group consisting of: molybdenum and molybdenum alloys.
- Who is the assignee on this patent?
- Otis Elevator Co
- What technology area does this patent fall under?
- Primary CPC classification B66B5/22. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jan 10 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).