Three position safety having trigger and bolt engaging positions for a firearm

• US 6,073,380 A
• Filed: 08/25/1998
• Issued: 06/13/2000
• Est. Priority Date: 08/26/1997
• Status: Expired due to Fees

• Current Assignee: S.A.T. Swiss Arms Technology AG
• Original Assignee: SIG Arms International AG
• Inventors: Meili, Roger, Hauser, Akasius
• Primary Examiner(s): Carone, Michael J.
• Assistant Examiner(s): FRENCH, FREDRICK T
• Application Number:
  US09/139,758
• Time in Patent Office: 658 Days
• Field of Search: 42/69.02, 42/69.01, 42/70.01, 42/70.04, 42/70.05, 42/70.06, 42/70.08
• US Class Current: 42/70.06
• CPC Class Codes: F41A 17/32 the other element being the breech-block or bolt
• CPC Class Codes: F41A 19/15 Modular firing mechanism units
• CPC Class Codes: F41A 19/16 Adjustable firing mechanisms; Trigger mechanisms with adjustable trigger pull F41A19/17 takes precedence

Abstract

A firearm includes a movable bolt; a striker mechanism including a firing pin; a trigger mechanism including a trigger cooperating with the striker mechanism for releasing the firing pin from a cocked position to fire a shot; a safety lever having a release position, a first locking position and a second locking position; an arrangement for preventing motion of the bolt in the second locking position of the safety lever and for allowing motion of the bolt in the release position and in the first locking position of the safety lever; and an arrangement for preventing a motion of the trigger in the first and second locking positions of the safety lever and for allowing a motion of the trigger in the release position of the safety lever.

Claims

1. A firearm comprising

(a) a housing;

(b) a movable bolt;

(c) a striker mechanism including a firing pin;

(d) a trigger mechanism including a two-armed trigger pivotally supported by said housing;

one of the arms of said trigger cooperating with said striker mechanism for releasing said firing pin from a cocked position to fire a shot;

(e) a safety lever pivotally supported by said housing and having a release position, a first locking position and a second locking position;

in said release position and in said first locking position said safety lever being withdrawn from said bolt, whereby said bolt is in a released state and in said second locking position said safety lever preventing a motion of said bolt, whereby said bolt is in a blocked state; and

(f) a leaf spring having an end secured to said housing;

said leaf spring including a movable portion having a blocking position in which said movable portion is situated in a path of travel of said arm, whereby motion of said trigger is blocked;

said movable portion of said leaf spring having an unblocking position in which said movable portion is situated externally of said path of travel of said arm for allowing motion of said trigger;

said safety lever cooperating with said movable portion of said leaf spring such that said movable portion of said leaf spring is placed into said blocking position from said unblocking position by said safety lever upon motion of said safety lever from said release position into either of said first and second locking positions thereof.

2. The firearm as defined in claim 1, wherein said release position, said first locking position and said second locking position of said safety lever constitutes, respectively, a forward position, a middle position and a rearward position of said safety lever.

3. The firearm as defined in claim 1, further comprising an adjustable spring engaging said arm for biasing said trigger.

4. The firearm as defined in claim 1, further comprising two screws threadedly held in said housing for adjustably limiting a travel path of said trigger.

5. The firearm as defined in claim 1, further comprising a stop secured to said housing;

further wherein an end of said movable portion of said leaf spring abuts said stop in said first and second locking positions of said safety lever.

6. The firearm as defined in claim 1, further comprising a catch affixed to said safety lever and a groove provided in said bolt;

said catch extending into said groove solely in said second locking position of said safety lever for preventing motion of said bolt.

7. The firearm as defined in claim 6, further comprising a guide plate secured to said housing and laterally bounding said catch.

8. The firearm as defined in claim 1, wherein said housing is composed of two sheet-metal plates connected to one another by spacers.

9. The firearm as defined in claim 8, wherein said plates have apertures accommodating wedged ends of said spacers.

10. The firearm as defined in claim 1, further wherein said trigger mechanism includes a sear having a cocked position holding said striker mechanism and a releasing position;

in said releasing position said sear preventing said safety lever from moving out of said release position thereof.

11. The firearm as defined in claim 10, further wherein said safety lever has a locking element moving with said safety lever as a unit;

said sear blocking said locking element in said releasing position of said sear.

12. The firearm as defined in claim 1, further comprising a lug affixed to said safety lever and a projection provided on said leaf spring;

said lug depressing said leaf spring at said projection for displacing said movable portion of said leaf spring into said blocking position in said first and second locking positions of said safety lever.

13. The firearm as defined in claim 12, wherein said leaf spring is composed of two spring parts and one of said spring parts has a U-shaped bend constituting said projection.

14. The firearm as defined in claim 13, wherein said two spring parts are bonded to one another by a weld.