Plug and pencil for engine

• US 7,392,576 B2
• Filed: 12/15/2005
• Issued: 07/01/2008
• Est. Priority Date: 10/05/2004
• Status: Expired due to Fees

• Current Assignee: Michael E. Fedor
• Original Assignee: Michael E. Fedor
• Inventors: Fedor, Michael E.
• Primary Examiner(s): Ross; Dana
• Application Number:
  US11/306,087
• Publication Number:
  US 20060196030A1
• Time in Patent Office: 929 Days
• Field of Search: 295/58, 295/59, 297/06, 294/64, 292/44, 292/56, 411/178, 411/383, 411/5, 411/243, 411/397
• US Class Current: 29/558
• CPC Class Codes: B63H 21/10 relating to condensers or engine-cooling fluid heat-exchangers
• CPC Class Codes: C23F 13/18 Means for supporting electrodes
• CPC Class Codes: C23F 2213/31 Immersed structures, e.g. submarine structures
• CPC Class Codes: F02F 2007/0041 Fixing Bolts
• CPC Class Codes: F16B 2033/025 with left-hand thread
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/49996 Successive distinct removal operations
• CPC Class Codes: Y10T 29/49998 Work holding

Abstract

A first portion or plug and a second portion or pencil are provided, for use in a device, such as a marine engine. The first portion or plug may have an outer surface with external threads and a cavity with internal threads. The external threads of the first portion or plug may be threaded oppositely from the internal threads inside the cavity of the first portion or plug. The opposite threading allows the plug and pencil combination to be detached and unscrewed from an engine without the plug and pencil coming apart.

Claims

1. A method comprising the steps of

providing a first portion with an outer surface having external threads and an inner cavity having internal threads, and wherein the external threads and internal threads are threaded in opposite hand directions;

providing a second portion having an end having external threads and wherein the external threads of the second portion can be screwed into the internal threads of the first portion to attach the second portion to the first portion;

wherein the second portion includes a first section and a second section;

wherein the first section is directly connected to the second section;

wherein the first section has external threads and the second section has no external threads;

wherein the first section has a first length and the second section has a second length;

wherein the second length is substantially longer than the first length;

wherein the first section can be inserted into the inner cavity of the first portion so that all of the external threads of the first section are inside the inner cavity; and

wherein the first portion is a plug and the second portion is a pencil.

2. The method of claim 1 wherein

the second portion is a zinc pencil.

3. The method of claim 1 further comprising

providing a device having a cavity with internal threads,

and wherein the external threads of the first portion can be screwed into the internal threads of the device so that the first portion is attached to the device, and wherein while the external threads of the first portion are screwed into the internal threads of the device, at least part of the second portion lies inside of the cavity of the device.

4. The method of claim 3 wherein

the second portion is a zinc pencil.

5. The method of claim 3 further comprising

providing the device as part of an engine.

6. The method of claim 5 further comprising

providing the device as part of a marine engine.

7. The method of claim 1 further comprising

inserting the first portion into a cavity of a device;

and screwing the external threads of the first portion into internal threads inside the cavity of the device so that the first portion is attached to the device;

and wherein while the external threads of the first portion are screwed into the internal threads of the device, at least part of the second portion lies inside of the cavity of the device.

8. The method of claim 1 wherein

the second portion is substantially cylindrically shaped.

9. A method comprising

inserting a first portion into a cavity of a device, wherein the first portion is attached to a second portion;

and screwing external threads of the first portion into internal threads inside the cavity of the device so that the first portion is attached to the device;

wherein the first portion has an outer surface having the external threads and an inner cavity having internal threads, and wherein the external threads and internal threads of the first portion are threaded in opposite hand directions;

wherein the second portion has an end having external threads and wherein the external threads of the second portion can be screwed into the internal threads of the first portion to attach the second portion to the first portion;

wherein the second portion includes a first section and a second section;

wherein the first section is directly connected to the second section;

wherein the first section has external threads and the second section has no external threads;

wherein the first section has a first length and the second section has a second length;

wherein the second length is substantially longer than the first length;

wherein the first section can be inserted into the inner cavity of the first portion so that all of the external threads of the first section are inside the inner cavity;

and wherein while the external threads of the first portion are screwed into the internal threads of the device, at least part of the second portion lies inside of the cavity of the device.

10. The method of claim 9 wherein

wherein the first portion is a plug and the second portion is a pencil.

11. The method of claim 10 wherein

the second portion is a zinc pencil.

12. The method of claim 9 wherein

the device is part of an engine.

13. The method of claim 12 wherein

the device is part of a marine engine.

14. The method of claim 10 wherein

the device is part of an engine.

15. The method of claim 14 wherein

the device is part of a marine engine.

16. The method of claim 9 wherein

the second portion is substantially cylindrically shaped.