A Drive Nut For Moving A Platform Of A Platform Elevator
Patent No. EP4232391 (titled "A Drive Nut For Moving A Platform Of A Platform Elevator") was filed by Swift Home Lifts Sweden on Oct 22, 2021. The application was issued on Nov 20, 2024.
Patent Summary
A drive nut for platform elevators that eliminates noise and wear caused by thread misalignment between screw sections. The nut features a specially designed thread profile with a decreasing width lower flank that extends along a controlled portion of the circumference. This design enables smooth passage over the interface between screw sections, preventing chocks and unpleasant noise. The nut is adapted through a controlled wear process that involves multiple passages over the interface, allowing it to conform to the screw thread irregularities.
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Date
Description
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EP4232391
- Application Number
- EP21799222A
- Filing Date
- Oct 22, 2021
- Status
- Granted And Under Opposition
- Oct 18, 2024
- Publication Date
- Nov 20, 2024
- External Links
- Slate, Register , Google Patents