PATENT CLAIM ANALYSIS

Application Number: 16419301
Application Type: Utility
Filing Date: 2019-05
Publication Date: 2020-01
Patent Classification: ["042", "016000"]

Abstract:
Takedown pins for rifles have a pin movable in a direction along its length between an operating condition and a released condition. The pin has a first end portion that prevents relative movement of the upper receiver with respect to the lower receiver when the pin is in the operating condition. The first end portion has a lower end portion surface adapted to resist upward movement of the upper receiver's lug. The pin has an intermediate portion adjacent to the lower end portion surface defining a lower channel having a lower channel surface above the level of the lower end portion surface. When the pin is in the released condition, the lower channel is registered with the lug, and the lug is enabled to move upward with respect to the lower receiver by a limited distance to a disengaged position.

Claim (Index 1):
A rifle comprising:\n an upper receiver having a downwardly depending rear lug having a width; the rear lug defining a transverse lug bore having a selected diameter; a lower receiver removably attachable to the upper receiver; the lower receiver defining an upwardly open cavity defined between opposed sidewalls; the cavity adapted to receive the rear lug when the upper receiver is connected to the lower receiver; the sidewalls defining lateral sidewall bores having the selected diameter; the sidewall bores being registered with the transverse lug bore when the upper receiver and lower receiver are in a fully engaged condition; a pin having an elongated portion received in the transverse lug bore and the sidewall bores; the pin being movable in a direction along its length between an operating condition and a released condition; the pin having a first end portion that, when the pin is in the operating condition, is closely received in at least one of the sidewall bores and is closely received within at least a portion of the transverse lug bore such that relative movement of the upper receiver with respect to the lower receiver is prevented; the first end portion having a lower end portion surface adapted to resist upward movement of the rear lug; the pin having an intermediate portion adjacent to the lower end portion surface; the intermediate portion of the pin defining a lower channel having a lower channel surface above the level of the lower end portion surface; the intermediate portion having a widest dimension in the fore and aft direction at a level above the lower end portion; and the lower channel having a width at least as great as the width of the rear lug, such that when the pin is in the released condition, the lower channel is registered with the rear lug, and the rear lug is enabled to move upward with respect to the lower receiver by a limited distance to a disengaged position.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 100.0
- Lexical Diversity: 2.3871
- Patent Class: 42.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16043032', '16043046', '11647817', '15666230', '11519288']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8230734239824419
- 35 USC 102 Novelty (BERT): 0.5999442780236561
- Combined Prediction Score: 0.8007605093865633
- Mean Citation Score: 368.952044
- Max Citation Score: 541.9221
- Similarity Product: 520.8060156230271

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

Dataset: test