PATENT CLAIM ANALYSIS

Application Number: 15963800
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-11
Patent Classification: ["042", "008000"]

Abstract:
A takedown pin system may be used for the processes of securing, semi-securing, and/or un-securing the rear connection points of firearm lower and upper receivers, for example, of an AR-15, with an option to maintain axial engagement of the pin to the receivers throughout two or more of the processes. An enhanced pin detent track allows pin rotation when axially-engaged in the receivers. A narrow pin body portion, for example, a recessed side surface portion or a narrow flange, cooperates with the pin hole and/or a slot in an upper receiver rear knuckle. Rotating the pin may locate the recess or flange to make room between the pin and the inner surface(s) of the upper receiver pin hole so the upper receiver can pivot slightly open from the lower receiver. A slot at the bottom of the rear knuckle hole may receive a flange of the takedown pin.

Claim (Index 11):
A firearm takedown pin for connection of a firearm lower receiver having a rear coupler comprising a proximal sidewall with a proximal pin hole and a distal sidewall with distal pin hole, and a firearm upper receiver having a rear knuckle with a takedown pin hole defined by an inner hole surface, wherein front ends of the lower receiver and upper receiver are pivotally connected together;\n the takedown pin comprising a main body with a proximal end portion with a proximal end portion diameter, a distal end portion with a distal end portion diameter, a longitudinal axis between the proximal and distal end portions and a radial dimension transverse to the longitudinal axis, and a midsection located between said proximal and distal end portions, wherein the midsection comprises at least one axial side surface having a recess so that the midsection has a maximum radial width that is smaller than the proximal end portion diameter and smaller than the distal end portion diameter, wherein said proximal end portion and said distal end portion are adapted to be received in the proximal and distal pin holes, respectively, and the midsection is adapted to be received and rotatable in the takedown pin hole of the rear knuckle, so that when the pin is rotated in the takedown pin hole to a semi-secure pin position, the rear knuckle slides upward relative to the takedown pin midsection so that the upper receiver is pivotal upward to a semi-secure upper receiver position.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 91.0
- Lexical Diversity: 2.07595
- Patent Class: 42.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15365666', '15491427', '15203686', '15924135', '15859722']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8152150835025771
- 35 USC 102 Novelty (BERT): 0.4948637862883645
- Combined Prediction Score: 0.7831799537811558
- Mean Citation Score: 279.907456
- Max Citation Score: 297.1971
- Similarity Product: 252.29057102737423

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