PATENT CLAIM ANALYSIS

Application Number: 16287032
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-07
Patent Classification: ["417", "545000"]

Abstract:
There is provided an airless paint spray pump wherein the pump is a double acting piston pump having an inlet communicating with a source of paint, a motor for driving the pump, a pressure controller for controlling the pressure of the pressurized paint delivered by the pump, and a filter for filtering the paint delivered by the pump. The pump includes features which increase the accessibility of the components thereof, prevent the incorrect installation of the seal packings in the pump cylinder, and allow the assembly of the piston in the pump cylinder properly aligned with the cylinder so as not to damage the seal packings therein.

Claim (Index 2):
The method for assembling a double acting piston pump as defined in  claim 1 , wherein said second seal packing having a seal element disposed axially most distant from said outlet chamber with a substantially radially inwardly directed annular flexible sealing lip having an end slanted axially towards said inlet chamber, and said stepped piston further includes a second gradually tapered piston section between the smaller and larger diameter piston sections, wherein the relative axial arrangement and dimensions of said pump cylinder, stepped piston, second seal packing, inlet valve assembly external screw threads and pump body through bore internal screw threads are such that, with the larger diameter piston section received in the central bore of said inlet valve assembly, the second gradually tapered piston section does not engage the sealing lip of said second seal packing until the inlet valve assembly external screw threads commence engagement with the pump body through bore internal screw threads, and upon the completion of screwing and the final positioning of said inlet valve assembly in said pump body through bore the second seal packing sealingly engages about the larger diameter piston section, so that during the step of gradually screwing said inlet valve assembly into said pump body through bore the second gradually tapered piston section gradually radially widens the sealing lip of the second seal packing disposed axially most distant from the outlet chamber without directionally inverting or upsetting the end of said sealing lip of said second seal packing until said inlet valve assembly is fully screwed into and inserted within said pump body through bore and said second seal packing engages about the larger diameter piston section of said stepped piston.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 99.0
- Lexical Diversity: 1.9322
- Patent Class: 417.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14482223', '15395147', '13621415', '11265295', '15395139']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7855200575506937
- 35 USC 102 Novelty (BERT): 0.5718564528147021
- Combined Prediction Score: 0.7641536970770945
- Mean Citation Score: 274.462956
- Max Citation Score: 462.20743
- Similarity Product: 399.5751486268544

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

Dataset: test