Plastic nails for automatic nail gun

• US 4,971,503 A
• Filed: 01/22/1990
• Issued: 11/20/1990
• Est. Priority Date: 01/22/1990
• Status: Expired due to Fees

• Current Assignee: Concept Plastics Corporation
• Original Assignee: Concepts in Optics Incorporated
• Inventors: Palmer, James J., Barnell, Anthony J.
• Primary Examiner(s): Wilson, Neill R.
• Application Number:
  US07/468,067
• Time in Patent Office: 302 Days
• Field of Search: 411/442, 411/443, 411/444, 411/908, 206/343-347
• US Class Current: 411/443
• CPC Class Codes: B29C 45/00 Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor injection blow-moulding B29C49/06
• CPC Class Codes: B29C 45/26 Moulds
• CPC Class Codes: F16B 15/00 Nails; Staples surgical staples A61B17/064; manufacture of nails or staples B21G ; drawing-pins, thumb-tacks B43M15/00; railway spikes E01B9/06
• CPC Class Codes: F16B 15/08 formed in integral series but easily separable
• CPC Class Codes: Y10S 411/908 Resinous material

Abstract

A molded nail pack for use in an automatic nail gun that has a feeder for delivering nails in sequence into a chamber and a hammer for driving a nail in the chamber into a receiving member. The molded pack includes a plurality of nails that are supported in a spaced apart relationship by a first upper web and second lower web molded integrally with adjacent nails. In a second embodiment of the invention, the nails are connected by a vertically disposed web extending between overlapping heads of adjacent nails in the pack. Each web has a weakened section located so that a nail positioned in the gun chamber separates cleanly from the pack when struck by the gun hammer thereby preventing the gun from becoming jammed.

Claims

1. A molded nail pack for use in an automatic nail gun having a feeder for delivering nails in sequence into a chamber and a hammer for driving a nail positioned in the chamber into a receiving structure, said nail clip including

a plurality of plastic nails, each nail having a cylindrical shank, an expanded circular head at the top of the shank, and a pointed tip at the bottom of the shank,

a first upper rigid web and a second lower rigid web molded integrally with the shanks of said nails to support the nails in spaced apart alignment to permit the first nail in the series to be delivered into said gun chamber, said first and second webs having a rectangular cross-section with the width, along said cylindrical shanks being substantially greater than the thickness of said webs transversely of said shanks and at least equal to the length between adjacent nail shanks, and

each web having a weakened section located a predetermined distance from a downstream nail in said series so that said web separates from the clip within said chamber when the head of the downstream nail is struck by the gun hammer whereby the nails are prevented from jamming in said gun.

2. The molded nail pack of claim 1 wherein the weakened section of each web occurs in a region where the web joins the shank of the downstream nail.

3. The molded nail pack of claim 1 wherein the weakened section includes a cutout formed across a major portion of the width of the web.

4. The molded nail pack of claim 1 wherein the weakened section includes a cutout formed in the thickness of the web across the entire width thereof.

5. The molded nail pack of claim 1 wherein each web has a first weakened section close to a downstream nail and a second weakened section close to the adjacent upstream nail so that the sections are sheared in an ordered sequence.

6. The molded nail pack of claim 5 wherein the first section shears when the upstream nail is struck by the gun hammer and the second section is sheared as the driven nail penetrates the receiving structure.

7. The molded nail pack for use in an automatic nail gun having a feeder for delivering nails in sequence into a chamber and a hammer for driving a nail positioned in the chamber into a structure, said nail pack including

a plurality of plastic nails, each nail having a cylindrical shank, an expanded circular head at the top of the shank, and a pointed tip at the bottom of the shank,

the nails being positioned such that the head of upstream nails in the series overlap the heads of adjacent downstream nails whereby the nails comprising the nail pack are positioned in ascending order from front to back, and

a first web disposed parallel to said nail shanks connecting the bottom of the head of an upstream nail to the top of the head of an adjacent downstream nail, said first web being integrally molded with said adjacent nails to support the nails in spaced apart alignment to permit the first nail in the series to be delivered into said gun chamber.

8. The nail pack of claim 7 further including a second web disposed perpendicularly to said nail shanks and integrally molded with said adjacent nails to support the adjacent nail shanks in a spaced apart alignment to permit the first nail in the series to be delivered into said gun chamber, and

each web having a weakened section positioned so that said webs separate from the upstream nails within said gun chamber when the downstream nail is struck by the gun hammer.

9. A molded nail pack as recited in claim 8 wherein said second web has a weakened section near the shank of said downstream nail.

10. A plastic nail pack as recited in claim 9 wherein said weakened section is near the shank of said downstream nail and wherein a second weakened section is also contained in each second web that is near the shank of the adjacent upstream nail.

11. A plastic nail pack as recited in claim 8 wherein said first web has a weakened section near the head of said downstream nail.