Intelligent door restraint
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 12, 2018
Issued Date -
N/A
app pub date -
Jun 1, 2015
filing date -
Jul 13, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for controlling a door, comprising the steps of storing energy during a manual opening of a door, sensing an object within a doorway, selectively applying a force derived from the stored energy, to close the door, based on the sensing of an object in the doorway. The closure is preferably controlled by an electronic control. A door closing device comprising an energy storage device for storing energy during door opening and releasing the stored energy to subsequently close the door, a damping system for damping a closure of the door, a sensor for detecting an object within a doorway, having an output, a controllable device for selectively restraining the energy storage device from closing the door, and a control system for controlling the controllable device based on the output.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- B25J Class
- 1503 Applications Filed
- 1184 Patents Issued To-Date
- 78.78 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 27 Citation Count
- B25J Class
- 97.10 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 12, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 12, 2029 |