PATENT CLAIM ANALYSIS

Application Number: 15914417
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-08
Patent Classification: ["060", "670000"]

Abstract:
A high efficiency uniflow steam engine having automatic inlet and exhaust valves rather than camshaft operated valves includes an electromagnet and cooperating armature that actuates a cutoff control valve for closing a steam inlet valve at any time selected to cut off the flow of steam to the cylinder. Approaching the end of the exhaust stroke, e.g., about 0.12 inch before TDC the cylinder can be sealed to thereby compressing the remaining residual steam down to a minute clearance approaching zero, for example, 0.020 inch raising cylinder steam pressure enough to open the steam inlet valve without physical contact between the piston and the steam inlet valve eliminating tappet noise, shock and wear.

Claim (Index 5):
A steam engine comprising, a cylinder having a piston that is sealingly and slidably mounted therein at one end of a steam expansion chamber and is operatively connected to a crankshaft,\n a steam inlet valve mounted in the engine that is constructed when in a closed position to seal a valve seat in the engine that communicates between a steam supply port and the steam expansion chamber, a steam exhaust valve mounted for reciprocation in the engine in communication with the steam expansion chamber for exhausting steam therefrom and a spring supported by the exhaust valve in a position to contact a cutoff control valve in the engine communicating with the steam expansion chamber that confronts and is contacted by the spring when the piston approaches a top dead center position thereby closing the cut off control valve.

Metadata:
- Claim Count in Document: 10.0
- Percentile: 90.0
- Lexical Diversity: 1.51899
- Patent Class: 60.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15794486', '13532853', '15077576', '12959025', '12387113']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7305446891485321
- 35 USC 102 Novelty (BERT): 0.5115523100463661
- Combined Prediction Score: 0.7086454512383155
- Mean Citation Score: 309.707278
- Max Citation Score: 337.04297
- Similarity Product: 310.7481710789407

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

Dataset: test