Thread protecting device

• US 5,273,384 A
• Filed: 09/22/1992
• Issued: 12/28/1993
• Est. Priority Date: 09/22/1992
• Status: Expired due to Fees

• Current Assignee: Max E. Dunbar
• Original Assignee: Max E. Dunbar
• Inventors: Dunbar, Max E.
• Primary Examiner(s): Lindsey, Rodney M.
• Application Number:
  US07/949,795
• Time in Patent Office: 462 Days
• Field of Search: 411/427, 411/174, 411/175, 411/428, 411/112, 411/374, 411/376, 411/372, 411/371, 411/373, 411/375, 411/523, 411/524, 411/111, 411/433, 411/431, 411/430, 411/429, 411/920
• US Class Current: 411/428
• CPC Class Codes: F16B 37/041 Releasable devices F16B37/044, F16B37/045 take precedence
• CPC Class Codes: Y10S 411/97 Resilient retainer

Abstract

The thread protecting device of the present invention includes a U-shaped clip with a hollow cylindrical cap mounted thereon. The clip includes spaced apart upper and lower legs defining a channel therebetween for receipt of a portion of a vehicle frame. The cap includes a threaded plug in the lower end thereof and a closed upper end. A carrier bolt for a spare tire carrier is adapted to extend through a hole in the legs of the clip, an aperture in the frame, and the threaded lower end of the cap such that the threads are enclosed within the cap. A grease fitting is provided on the cap so that grease can be injected into the cap for lubricating the threads.

Claims

1. A thread protecting device for covering and protecting threads on a spare tire carrier bolt, the bolt extending through an aperture on a vehicle frame, the device comprising:

a U-shaped clip having spaced apart upper and lower legs defining a channel therebetween, a web interconnecting the legs, each leg having a hole therein, the clip being adapted to receive a portion of the frame between the legs aligning with the aperture in the frame;

a hollow cylindrical cap mounted on the clip and being axially aligned with the holes in the legs, the cap having a closed upper end, an open lower end; and

a sidewall extending between the upper and lower ends; and

thread means including a plug mounted in the lower end of the cap for threadably receiving the bolt threads such that the threads of the bolt are enclosed within the cap for protection from water, dirt and other debris on a road surface.

2. The device of claim 1 further comprising a grease fitting mounted on the cap such that grease can be injected into the cap.

3. The device of claim 1 wherein at least one leg of the clip has an upwardly flared end opposite the web.

4. The device of claim 1 wherein the sidewall of the cap is spaced radially apart from the bolt threads.

5. The device of claim 1 wherein the plug includes external threads and the cap includes internal threads such that the plug is at least partially threadably received into the cap.

6. The device of claim 5 wherein the hole in the upper leg of clip includes threads for threadably receiving a portion of the plug.

7. The device of claim 1 wherein the cap is welded onto the clip.

8. The device of clip 1 wherein the thread means includes said plug threaded partially into the hole in the upper leg of the clip and threaded partially into the lower end of the cap such that the cap is securely mounted on the clip.

9. A thread protecting device comprising:

enclosure means having a first open end, a second closed end, and a sidewall extending therebetween;

plug means connected to the enclosure means at the first end and designed to threadably receive the bolt;

mounting means coupled to the enclosure means for positioning the enclosure means on a body and substantially preventing rotation of the enclosure means relative to the bolt wherein the enclosure means is adapted to threadably receive the plug means.

10. The device of claim 9 wherein said mounting means comprises a U-shaped clip having spaced apart upper and lower legs defining a channel therebetween, a web interconnecting the legs, each leg having a hole therein, the clip being adapted to receive a portion of the body between the legs.