# US 4,392,320 A · Trigger retaining and stabilizing means

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- Number: US 4,392,320 A
- Document ID: US4392320A
- Status: Granted
- Kind: A
- Application number: 06/373,263
- Filed: 1982-04-29
- Granted: 1983-07-12
- Earliest claimed: 1982-04-29
- Inventors: Robert L. Hillberg; Frederick F. Stevens
- Web page: https://patentgrep.com/patent/US4392320A

## CPC

- F41A 19/11: Trigger guards; Trigger-guard mountings (F41A19/15 takes precedence)
- F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE

## Abstract

The trigger of a handgun is retained and stabilized for longitudinal sliding movement between ready and firing positions within an upwardly opening guideway in the gun frame by longitudinally spaced apart lugs which project from the trigger into a guide track formed in the frame and opening laterally into the guideway. When the trigger is in an assembly position relative to the frame one of the lugs is vertically aligned with an upwardly and laterally inwardly opening notch in the frame which communicates with the guideway and the guide track. A pin carried by the trigger and engageable with an abutment on the frame prevents movement of the trigger to its assembly position after assembly with the frame.

## Claims

### Claim 1

In a gun having a frame and a trigger supported in assembly in a guideway defined by the frame for reciprocal movement longitudinally of the frame between ready and firing positions the improvement comprising said frame having a longitudinally extending guide track communicating with said guideway and at least one opening communicating with said guideway and said guide track, said trigger having longitudinally spaced apart guide elements slidably received within said guide track and retaining said trigger in assembly with said frame within said guideway, said trigger having an assembly position relative to said frame wherein one of said guide elements is aligned with said one opening for movement through said one opening and said trigger is free to move into and out of assembled relation with said frame.

### Claim 2 (depends on 1)

In a gun as set forth in claim 1 the further improvement wherein said guideway comprises an upwardly opening slot in said frame.

### Claim 3 (depends on 2)

In a gun as set forth in claim 2 the further improvement wherein said slot is defined by opposing laterally spaced apart guide surfaces and said guide track comprises a groove opening laterally into said guideway through one of said guide surfaces.

### Claim 4 (depends on 3)

In a gun as set forth in claim 3 the further improvement wherein said frame has a pistol grip at its rear end and said slot opens through the front end of said frame.

### Claim 5 (depends on 4)

In a gun as set forth in claim 4 the further improvement wherein another of said guide elements is disposed forwardly of an associated front end portion of the frame when said trigger is in its assembly position.

### Claim 6 (depends on 1, 2, 3, 4, 5)

In a gun as set forth in any one of claims 1 through 5 the further improvement wherein said one opening comprises a notch opening upwardly through said frame.

### Claim 7 (depends on 6)

In a gun as set forth in claim 6 the further improvement wherein said notch opens laterally inwardly into said guideway.

### Claim 8 (depends on 1, 2, 3, 4, 5)

In a gun as set forth in any one of claims 1 through 5 the further improvement wherein said assembly position is located in one longitudinal direction beyond said ready position and said firing position.

### Claim 9 (depends on 1, 2, 3, 4, 5)

In a gun as set forth in any one of claims 1 through 5 the further improvement wherein said ready position is located intermediate said assembly position and said firing position.

### Claim 10 (depends on 1, 2, 3, 4, 5)

In a gun as set forth in any one of claims 1 through 5 the further improvement wherein said gun includes means for preventing movement of said trigger to its assembly position when said gun is in its assembled condition.

### Claim 11 (depends on 10)

In a gun as set forth in claim 10 the further improvement wherein said means for preventing movement comprises a pin carried by said trigger and engageable with an abutment surface on said frame.