PATENT CLAIM ANALYSIS

Application Number: 15946392
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["251", "129110"]

Abstract:
The force limited valve actuator operates on light-duty valves. The actuator includes signal controlled motor which drives a two piece threaded screw-nut drive. The nut connected to the motor and the screw connected to the valve stem. The nut has a spring loaded actuation surface/plate. The nut body has a positional indicator stem used as a valve-motor control. Operationally, the screw-nut-set moves between first, second and third positions. First: actuation plate at neutral and valve-stem at valve OPEN stop (example). Second: screw protrudes outboard of nut and valve-stem at CLOSE stop and actuation plate at neutral. Third: plate moves away from valve-stem (beyond neutral) while stem at CLOSE which third movement is a force sensor. First, second and third positions are all one way screw rotation. Force limited on stem by damper-shock absorber action. The positional indicator effects ON-OFF valve control.

Claim (Index 2):
A method of limited force on a valve stem of a light duty valve actuated with less than 1,100 N operative between open and closed positions, said valve controlled by a valve control signal, comprising:\n providing a threaded drive with screw and nut elements disposed in an actuator housing; providing a spring between said screw element and said actuator housing linearly moving said valve stem in a first direction by screwed rotation of said screw element with respect to said net element until reaching one or the other of said open and closed positions; thereafter linearly moving said screw element in a second direction, opposite said first direction, against said spring; sensing force on said valve stem during the linear movement of said screw element in said second direction; thereby establishing one of a damper action and a shock absorber action between said valve stem and motor via said spring and thereby establishing during movement in said second direction via said spring, one of a damper action, a shock absorber action and a force limiter action between said valve stem and motor.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 1.89535
- Patent Class: 251.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15337048', '15653960', '11519305', '14938672', '14702383']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6943131312542811
- 35 USC 102 Novelty (BERT): 0.5234345512741521
- Combined Prediction Score: 0.6772252732562682
- Mean Citation Score: 238.30533
- Max Citation Score: 379.6511
- Similarity Product: 314.4272154621959

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test