# US 2021/0172702 A1 · Pistol

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- Number: US 2021/0172702 A1
- Document ID: US20210172702A1
- Status: Published application
- Kind: A1
- Application number: 17/180,733
- Filed: 2021-02-20
- Published: 2021-06-10
- Earliest claimed: 2017-08-16
- Assignees: Zrodelta, LLC
- Applicants: Zrodelta, LLC
- Inventors: Patrick L. Harrigan; Johnathan Charles Birk; Joel Edwards; Timothy Wayne Raley
- Web page: https://patentgrep.com/patent/US20210172702A1

## CPC

- F41C 23/10: Stocks or grips for pistols, e.g. revolvers (F41C23/12 takes precedence)
- F41A 3/66: Breech housings or frames; Receivers
- F41A 5/02: recoil-operated
- F41A 11/00: Assembly or disassembly features; Modular concepts; Articulated or collapsible guns (F41A3/64, F41A19/10 - F41A19/15, F41A21/48, F41A25/26 take precedence)
- F41C 3/00: Pistols, e.g. revolvers (specially adapted for underwater use F41C9/06; for slaughtering or stunning animals A22B; for shooting bolts into concrete constructions, metal walls or the like B25C)
- F41A 3/86: mounted under {or above} the barrel
- F41A 19/10: Triggers; Trigger mountings
- F41C: SMALLARMS, e.g. PISTOLS, RIFLES (functional features or details common to both smallarms and ordnance, mountings therefor F41A; projecting missiles without use of explosive or combustible propellant charge F41B); ACCESSORIES THEREFOR
- F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE

## Abstract

Pistols have a body having a grip, the grip defining a magazine passage, the body having a trigger guard defining a trigger space, the body having an upper surface, the body having a first mounting facility, an upper frame assembly removably connected to the body in a connected position, the upper frame assembly including a trigger element extending into the trigger space when in the connected position, a protrusion extending upward from the upper surface of the body, the protrusion having a forward-facing first bearing surface, and the upper frame assembly having a rear-facing second bearing surface adapted to abut the first bearing surface when in the connected position to transmit recoil forces from the upper frame assembly to the body. The upper frame assembly may have a slide rail. The upper frame assembly may define a horizontal slide plane.

## Claims

### Claim 1

A pistol frame comprising:
a body having a grip;
the grip defining a magazine passage;
the body having a trigger guard defining a trigger space;
the body having an upper surface;
the body having a first mounting facility;
an upper frame assembly removably connected to the body in a connected position;
the upper frame assembly including a trigger element extending into the trigger space when in the connected position;
a body stop portion proximate the upper surface of the body;
the body stop portion having a forward-facing first bearing surface; and
the upper frame assembly having a rear-facing second bearing surface adapted to abut the first bearing surface when in the connected position to transmit recoil forces from the upper frame assembly to the body.

### Claim 2 (depends on 1)

The pistol frame of claim 1 wherein the upper frame assembly has a slide rail.

### Claim 3 (depends on 1)

The pistol frame of claim 1 wherein the upper frame assembly defines a horizontal slide plane, and wherein the forward-facing first bearing surface is angled downward with respect to the slide plane at a selected angle.

### Claim 4 (depends on 1)

The pistol frame of claim 1 wherein the rear-facing second bearing surface is parallel to the forward-facing first bearing surface.

### Claim 5 (depends on 1)

The pistol frame of claim 1 wherein the upper frame assembly has a lower surface abutting the upper surface of the body.

### Claim 6 (depends on 1)

The pistol frame of claim 1 wherein the upper frame assembly defines a recess having opposed parallel sidewalls and receiving the body stop portion in the recess.

### Claim 7 (depends on 1)

The pistol frame of claim 1 wherein the body stop portion defines a first transverse bore, and the upper frame assembly defines a second bore registered with the first transverse bore when in the connected condition.

### Claim 8 (depends on 7)

The pistol frame of claim 7 including a pin received in the first transverse bore and second bore.

### Claim 9 (depends on 1)

The pistol frame of claim 1 wherein the body stop portion is forward of the magazine passage.

### Claim 10 (depends on 1)

The pistol frame of claim 1 wherein the upper surface of the body defines a trigger opening communicating with the trigger space.

### Claim 11 (depends on 1)

The pistol frame of claim 1 wherein the body stop portion is forward of the trigger opening.

### Claim 12 (depends on 1)

The pistol frame of claim 1 including mating elements on the body and on the upper frame assembly adjacent to the magazine passage and adapted to prevent sliding motion of the upper frame assembly with respect to the body upper surface.

### Claim 13 (depends on 12)

The pistol frame of claim 12 wherein the mating elements include a body stop portion on at least one of the body and the upper frame assembly and a recess on the other of the body and the upper frame assembly.