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US 9,040,868 B2Granted
Plasma torch and retaining cap with fast securing threads
AssigneeIllinois Tool Works Inc.
InventorsNathan Gerald Leiteritz, George Arthur Crowe
Life of this patent
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Abstract
A retaining cap for a plasma torch is provided that includes fast securing threads. The retaining cap includes internal threads that couple to external threads of a torch body of the plasma torch. The internal and external threads may be multiple start threads having a thread angle greater than 60°. Plasma torches and plasma cutting systems are also provided.
Claims20
A plasma torch, comprising:
- a nozzle;
- a swirl ring adjacent to the nozzle;
- a torch body having first threads;
- and
- a retaining cap having second threads, wherein the first threads and the second threads comprise multiple start threads, each of the multiple start threads comprising a root and two walls extending from the root and having a thread angle between the two walls greater than about 60°, wherein the retaining cap retains the nozzle and the swirl ring of the plasma torch.
2 more elements
A retaining cap for a plasma torch, comprising:
- a first portion comprising a metallic material;
- and
- a second portion comprising a plastic material, wherein the second portion comprises an annular inner wall comprising multiple start threads, wherein each of the multiple start threads comprises a root, two walls extending from the root, and a thread angle between the two walls of greater than 60°.
A plasma torch, comprising:
- a nozzle;
- a swirl ring adjacent to the nozzle;
- a torch body having first threads;
- and
- a retaining cap having second threads, wherein the first threads and the second threads comprise single start threads having a pitch of a multiple start thread, wherein each of the single start threads comprises a root, two walls extending from the root, and a thread angle between the two walls greater than about 60°, and wherein the retaining cap retains the nozzle and the swirl ring of the plasma torch.
2 more elements
Dependencies are inferred from the claim text.