US 11,333,457 B1Granted

Safety device for improved rifle dry fire practice

OwnerAlexander F. DeVoeinventor

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Abstract

A method for inserting a safety block into a rifle comprising an upper receiver and a lower receiver, the lower receiver comprising a trigger assembly positioned within a cavity. The method includes separating the upper receiver and the lower receiver to expose the lower receiver and inserting the safety block into the cavity. The safety block comprises a hammer cavity configured to surround the trigger assembly such that the safety block surrounds at least a hammer of the trigger assembly. A hammer stop of the safety block is configured to rest against the hammer. The method includes closing the upper receiver against the lower receiver. Closing the upper receiver brings the upper receiver into contact with the safety block and rotationally pushes the hammer stop of the safety block forward and against the hammer. Rotating the safety block against the hammer rotates the hammer such that the hammer is freed from a restraining portion of the trigger assembly.

Claims13

Dependent claims

A safety block configured for insertion into a rifle comprising an upper receiver and a lower receiver, the lower receiver comprising a trigger assembly positioned within a cavity of the lower receiver, the safety block comprising:

a body comprising:
a hammer cavity extending through a central portion of the body from a top surface of the body to a bottom surface of the body;
and
a hammer stop comprising an inclined inner surface configured to rest against a top surface of a hammer of the trigger assembly when the safety block is inserted into the rifle;
a forward portion formed from the body and configured to contact a forward edge of the lower receiver cavity when the safety block is inserted into the rifle;
a top portion formed from the body and configured to contact a bottom surface of the upper receiver when the safety block is inserted and the upper receiver is closed onto the lower receiver;
and
a rear portion formed from the body and configured to contact a rear edge of the lower receiver cavity when the safety block is inserted into the rifle;
wherein the body is configured to contact at least two sides of the lower receiver cavity when the safety block is inserted into the rifle;
and
wherein the hammer stop of the body is configured to rotate forward and push against the hammer when the upper receiver is closed against the lower receiver such that the safety block is forced into the lower receiver cavity, and wherein the hammer stop is configured to rotate the hammer such that the hammer is freed from a restraining portion of the trigger assembly when the safety block is forced into the lower receiver cavity.

8 more elements

a body having an upper surface and a lower surface with an opening extending through the body from the upper surface to the lower surface;
wherein the body further comprises a forward portion comprising an angled stop surface configured to rest against a top surface of a hammer of the trigger assembly when the safety block is inserted into the rifle;
wherein the forward portion further comprises a forward catch for engaging a forward edge of the lower receiver cavity when the safety block is inserted into the rifle;
wherein the body further comprises a top portion comprising a top surface that is wider than an upper receiver cavity for engaging the sides of the cavity when the upper receiver is closed onto the safety block;
wherein the body further comprises a rear portion comprising a rear catch for engaging a rear edge of the lower receiver cavity when the safety block is inserted into the rifle;
and
wherein the angled stop surface of the body is configured to rotate forward and push against the hammer when the safety block is inserted into the rifle and the upper receiver is closed against the lower receiver such that the safety block is forced into the lower receiver cavity, and wherein the angled stop surface is configured to rotate the hammer such that the hammer is freed from a restraining portion of trigger assembly when the safety block is forced into the lower receiver cavity.

4 more elements

Dependencies are inferred from the claim text.