Landing lever assembly of a pneumatic vacuum elevator and method to operate the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 7, 2023
Grant Date -
May 4, 2023
app pub date -
Sep 11, 2020
filing date -
Jun 2, 2020
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
A landing lever assembly of a pneumatic vacuum elevator is disclosed. The assembly includes a landing lever plate coupled on a roof of an elevator cabin. The assembly also includes a locking plate coupled to the landing lever plate using a plurality of support plates. The assembly further includes a solenoid valve disposed on the landing lever plate and mechanically coupled to the locking plate using a guide pin, where the guide pin is configured to actuate the locking plate by sliding within the solenoid valve, in at least one operational mode, based on an activation signal received from a magnetic sensor.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
BABU KILLAKATHU RAMANATHAN | CHENNAI - 600 020 TAMILNADU |
International Classification(s)

- 2020 Application Filing Year
- B66B Class
- 447 Applications Filed
- 218 Patents Issued To-Date
- 48.77 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Babu, Killalathu Ramanathan | Tamilnadu, IN | 1 | 0 |
# of filed Patents : 1 Total Citations : 0 |
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Patent Citation Ranking
- 0 Citation Count
- B66B Class
- 0 % this patent is cited more than
- 2 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
3.5 Year Payment | $1600.00 | $800.00 | $400.00 | May 7, 2027 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 7, 2031 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 7, 2035 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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