Chain saw sword, a saw chain and method of forming saw chain

• US 3,910,147 A
• Filed: 11/23/1973
• Issued: 10/07/1975
• Est. Priority Date: 11/29/1972
• Status: Expired due to Term

• Current Assignee: Arthur Eugen Heyerdahl
• Original Assignee: Arthur Eugen Heyerdahl
• Inventors: Heyerdahl, Arthur Eugen
• Primary Examiner(s): Abercrombie, Willie G.
• Application Number:
  US05/418,240
• Time in Patent Office: 683 Days
• Field of Search: 83/788,830,831,832,833,834,698
• US Class Current: 83/830
• CPC Class Codes: B23D 65/00 Making tools for sawing machines or sawing devices for use in cutting any kind of material
• CPC Class Codes: B27B 33/145 having plural teeth on a single link
• CPC Class Codes: Y10T 29/49915 Overedge assembling of seated part
• CPC Class Codes: Y10T 83/909 Cutter assemblage or cutter element therefor [e.g., chain saw chain]
• CPC Class Codes: Y10T 83/9457 Joint or connection

Abstract

A saw chain includes a plurality of links pivotally interconnected by complementary circular openings and heads, the peripheries of which are respectively in the form of V-shaped ridges and grooves, each providing two flat sliding surfaces. A saw sword support has guiding rails which laterally support the saw chain. The total thickness of the saw sword support is no more than the cutting width of the saw chain. In assembling the saw chain, the head is provided with one sliding surface and a cylindrical stem extending therefrom. The stem is inserted in an opening, and then the stem is deformed outwardly to form the second sliding surface of the head.

Claims

1. A saw chain for use in a chain saw, said saw chain comprising:

an assembly of links, said links having at the longitudinal ends thereof circular-shaped openings and complementary circularshaped heads;

the heads of said links being pivotally and nonremovably received in the openings of adjacent of said links;

the entire peripheries of said openings and heads having, as viewed in a radial cross-section, complementary V-shaped configurations with flat opposed sliding surfaces in contact; and

said links having opposite flat lateral surfaces, the lateral surfaces of all of said links being contiguously flush with each other.

2. A saw chain as claimed in claim 1, wherein said peripheral surface of each of said openings is formed by a V-shaped ridge, and said peripheral surface of each of said heads is formed by a V-shaped groove.

3. A saw chain as claimed in claim 2, wherein each of said links of said assembly of links comprises a cutting link with an opening at one end thereof and a head at the opposite end thereof.

4. A saw chain as claimed in claim 2, wherein said assembly of links comprises a plurality of cutting links each having openings on opposite ends thereof, and a plurality of coupling links each having heads on oppositE ends thereof, said cutting links being alternatively assembled with said coupling links to form said saw chain.