PATENT CLAIM ANALYSIS

Application Number: 15932322
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["188", "170000"]

Abstract:
A vehicle spring brake having a parking brake housing that defines a parking brake chamber and a service brake housing that defines a service brake chamber. A flexible membrane separates the parking brake chamber from the service brake chamber and flexes into and out of the service brake chamber based upon a pressure differential between an air pressure in the parking brake chamber and an air pressure in the service brake chamber. A pushrod extends out of the service brake housing when the flexible membrane flexes into the service brake chamber and retracts into the service brake housing when the flexible membrane flexes back out of the service brake chamber. A control valve controls the pressure differential to thereby control movement of the flexible membrane and the pushrod.

Claim (Index 17):
A vehicle spring brake comprising:\n a parking brake housing that defines a parking brake chamber; a service brake housing that defines a service brake chamber; a flexible membrane that separates the parking brake chamber from the service brake chamber, wherein the flexible membrane flexes into and out of the service brake chamber based upon a pressure differential between an air pressure in the parking brake chamber and an air pressure in the service brake chamber; a pushrod that extends out of the service brake housing when the flexible membrane flexes into the service brake chamber and retracts into the service brake housing when the flexible membrane flexes back out of the service brake chamber; a control valve that controls the pressure differential to thereby control movement of the flexible membrane and the pushrod; a parking spring assembly disposed in the parking brake chamber and configured to move into and between an extended state in which the parking spring assembly pushes the flexible membrane into the service brake chamber and the pushrod out of the service brake housing and a retracted state in which the parking spring assembly does not push the flexible membrane into the service brake chamber or the pushrod out of the service brake housing; and a return spring on the pushrod and having a natural resiliency that tends to cause the pushrod to retract into the service brake chamber.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 88.0
- Lexical Diversity: 3.14286
- Patent Class: 188.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['11218237', '13961022', '12254220', '13465126', '14614804']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.847831538571977
- 35 USC 102 Novelty (BERT): 0.4794724139042668
- Combined Prediction Score: 0.810995626105206
- Mean Citation Score: 282.245314
- Max Citation Score: 298.55637
- Similarity Product: 233.4495505368716

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test