Semi-automatic anchor shooter

• US 5,363,736 A
• Filed: 01/05/1994
• Issued: 11/15/1994
• Est. Priority Date: 01/05/1994
• Status: Expired due to Fees

• Current Assignee: Kuang-Wu Huang
• Original Assignee: Kuang-Wu Huang
• Inventors: Huang, Kuang-Wu
• Primary Examiner(s): Brown, David
• Application Number:
  US08/177,390
• Time in Patent Office: 314 Days
• Field of Search: 89/1.14, 277/9, 277/10, 277/11
• US Class Current: 89/1.14
• CPC Class Codes: B25C 1/14 acting on an intermediate plunger or anvil pistols for slaughtering or stunning animals A22B3/02
• CPC Class Codes: B25C 1/186 for cartridges or pellets
• CPC Class Codes: B25C 1/188 Arrangements at the forward end of the barrel, e.g. splinter guards, spall minimisers, safety arrangements, silencers, bolt retainers

Abstract

The present invention relates to a semi-automatic anchor shooter, more particularly to a powder-actuated anchor shooter which may shoot anchors at high precision and has a muffler chamber to minimize the noise from the explosion of powder. The disclosed anchor shooter consists of a shooting mechanism and a thrusting mechanism. The shooting mechanism provides convenient and precise aiming, and the thrusting mechanism provides buffer shooting, these together with a shell-free powder chain and a powder feeding mechanism enable the anchor shooter to steadily, efficiently, and powerfully shoot and implant anchors into a structural material at high precision.

Claims

1. A semi-automatic anchor shooter comprising a shooting mechanism and a thrusting mechanism;

said shooting mechanism comprising a main body, an inner tube disposed in a front portion of said main body, a shooting assembly, a dust guard, and a hammer disposed at a rear portion of said main body;

said shooting assembly including a hollow body member, a head member coupled to a front portion of said body member, and a piston rod disposed in said coupled body member and head member to reciprocatingly move therein;

said inner tube being received in said front portion of said main body and said shooting assembly being received in said inner tube and fixed thereto by means of a screw which passes through a hole formed on said main body and extends into said inner tube before being retained in an elongated slot formed on said hollow body member, such that said shooting assembly may reciprocatingly displace inside said inner tube within a predetermined range;

said inner tube being provided at each side of a rear seat thereof a coil spring and a steel ball received in front of said coil spring both of which are fixed to said inner tube by a screw, such that said steel balls protrude into an inner side of said rear seat of said inner tube to springily clamp between them a powder chain by engaging with one of a plurality of continuous recess pairs at two sides of said powder chain, said powder chain extending into said main body from a bottom opening of a front grip of the main body and being moved upward in one direction by means of a springy trigger;

said powder chain consisting of a series of powder packs each of which locates between two adjoining recess pairs and is thereby positioned in place by said steel balls;

said springy trigger consisting of a lever inclinedly extending between said front grip and said rear portion of said main body and an inclined plate connected to a front end of said lever, said lever connecting at a point near its central portion a first spring to give said lever some extent of spring force so that said trigger may be springily moved to shift the powder chain in one direction;

said hammer being disposed in said rear portion of said main body and having a second spring and a hollow housing put over a front section thereof;

said second spring and said hollow housing being fixed in said main body by means of a first connection piece behind said hammer, such that a pointed head of said hammer reaches into said rear seat of said inner tube, pointing to a percussion position of said positioned powder pack;

said hammer and said shooting assembly being maintained at a pretermined relative position by means of a restoring bar disposed between said hollow housing of said hammer and said shooting assembly, such that when said shooting assembly restores to it original position, said restoring bar pushes said hammer backward and keep the same in place lest the feeding of said powder chain should be hindered;

said shooting mechanism comprising a coupling, a sliding block, a centre rod, a connection member, a third spring, a hollow push member, an inner hexagon screw, a second connection piece, and a sleeve;

said coupling being screwed to a rear end of said first connection piece of said shooting mechanism and having a middle partition therein;

said centre rod, said sliding block, and said connection member all being received in said coupling;

said centre rod having a front head with larger outer diameter and a threaded rear end to engage with said connection member, said front head of said centre rod being retained at a front side of said middle partition of said coupling and a rear portion of said centre rod being received in said sliding block and said connection member behind said sliding block; and

said centre rod being provided near a front end thereof a spring key which has a backward and downward inclined top surface;

said third spring being put over a rear end of said connection member and said push member being further put over said third spring with a front end thereof screwed to said rear end of said sliding block so that said push member may push said sliding block to move;

said inner hexagon screw being internally screwed to a rear end of said push member to abut against a rear end of said third spring such that an adjustment of the position of said inner hexagon screw in said push member may adjust the spring force of said third spring, lest said third spring should fatigue and deform after a long period of use;

said sleeve having a front end with internal threads for said sleeve to screw to an externally threaded rear end of said coupling and receiving a part of said push member therein, and thereby preventing said push member from loosely swaying; and

said second connection piece being screwed at one end to said rear end of said push member.

2. A semi-automatic anchor shooter as claimed in claim 1, wherein said main body is provided at a lower front thereof a substantially closed muffler chamber and is communicable with said muffler chamber via a first through hole provided at a top of said muffler chamber;

said muffler chamber having a front opening being closed by a cover fixed thereto by means of a screw, and said cover having a second through hole formed at a predetermined position thereon.

3. A semi-automatic anchor shooter as claimed in claim 1, wherein said centre rod is provided at a front portion thereof a central hole for receiving an inner rod therein, said inner rod having a side hole formed at a middle portion thereof for receiving a fourth spring and said spring key therein, such that said spring key is springily retractable in said side hole;

said centre rod having a long slot formed on the wall of said central hole corresponding to said spring key so as to allow said spring key to project out of said centre rod and to limit the displacement of said spring key;

said inner rod having a slit formed on a top thereof for a pin to transversely pass through said front head of said centre rod and thereby holding said inner rod in said inner hole, said pin then being located in a preformed annular groove on the front head by a C-ring, and said inner rod being securely restricted in said centre rod by screwing an inner hexagon screw into a top of said front head over said inner rod.