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US4521146A Expired / Lapsed US ⏱️ 0.0 years remaining

Lug nut cap

Assignee: Maron Products Inc
•
Filing: 1982-11-08
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Granted: 1985-06-04
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Expires: 2002-11-08
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Abstract

Abstract A fastener for the protection of vehicle wheels, including a skirt member which fits around the wheel lug nut and a retainer member which is threaded onto the exposed end of the lug and overlies a part of the skirt member. The retainer member is recessed into the skirt member and includes a socket part which strips upon tightening to prevent removal of the retainer member from the lug.

Inventors

  • 👤 Donald J. Wharton

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 05:30
CPC Classifications
F; F16; F16B; F16B41/00; F16B41/005; Y; Y10; Y10S; Y10S411/00; Y10S411/91

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 281 words
A protective cap for a wheel nut when threaded upon a lug, said cap comprising a skirt member defined by an outer annular wall terminating in outer and inner end edges and having an opening formed therethrough between the end edges, said skirt member adapted to be placed about said nut with its said wall enclosing the nut and exposed end of the lug, said skirt member including an internal shoulder extending from said side wall into said opening, said skirt member shoulder being spaced from said outer end edge to form a recess about said exposed lug end, and a retainer member including socket means for receiving a tightening tool and a threaded portion adapted for engagement with said lug, said retainer member including a flange located between said socket means and said threaded portion, said retainer member flange adapted to adjacently overly said skirt member shoulder when said retainer member threaded part is turned onto said lug end with said skirt member placed about said nut, said retainer member socket means including a wall part adapted to be located within said retainer member recess when said retainer member threaded portion is turned onto said lug, and said socket means wall part being yieldable wherein said socket means is stripped when said retainer member is fully turned onto said lug end with said tool rotating relative to the wall part whereby the retainer member is prevented from being further turned or loosened by the tool, said socket means wall part including individual wall members separated by slit means for allowing said wall members to flex away from said tool upon final tightening of said socket means onto said lug end.
Claim 2
Dependent Claim 281 words
A protective cap for a wheel nut when threaded upon a lug, said cap comprising a skirt member defined by an outer annular wall terminating in outer and inner end edges and having an opening formed therethrough between the end edges, said skirt member adapted to be placed about said nut with its said wall enclosing the nut and exposed end of the lug, said skirt member including an internal shoulder extending from said side wall into said opening, said skirt member shoulder being spaced from said outer end edge to form a recess about said exposed lug end, and a retainer member including socket means for receiving a tightening tool and a threaded portion adapted for engagement with said lug, said retainer member including a flange located between said socket means and said threaded portion, said retainer member flange adapted to adjacently overly said skirt member shoulder when said retainer member threaded part is turned onto said lug end with said skirt member placed about said nut, said retainer member socket means including a wall part adapted to be located within said retainer member recess when said retainer member threaded portion is turned onto said lug, and said socket means wall part being yieldable wherein said socket means is stripped when said retainer member is fully turned onto said lug end with said tool rotating relative to the wall part whereby the retainer member is prevented from being further turned or loosened by the tool, said socket means wall part including individual wall members separated by slit means for allowing said wall members to flex away from said tool upon final tightening of said socket means onto said lug end.

References Cited (Backward Citations)

US2316695A Cited
US3440590A Cited
US3492841A Cited
US3854372A Cited
US3865007A Cited
US4037515A Cited
US4302137A Cited
US4324516A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-06-03 1988-12-03 1989-06-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-06-03 1992-12-03 1993-06-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-06-03 1996-12-03 1997-06-04 $7700.00 Window Closed / Lapsed

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