Patent US3879145A successfully refreshed from Google Patents.
US3879145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End plug for fiberglass tool handles
Assignee: Nupla Corp
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Filing: 1974-05-28
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Granted: 1975-04-22
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Expires: 1994-05-28
Abstract
Abstract An end plug is mounted within a tool head opening to provide a smooth finished area to enhance the tool appearance and to provide an area for part number, logo or other indicia to be shown. The end plug also conceals the end of the fiberglass handle. The resilient end plug has a body portion formed complementarily to the handle receiving opening of a tool head. The plug has integral hemispherical spacers which resiliently engage the sides of the opening to hold the plug in place. The spacers extend for only half the depth of the body portion and have flat top surfaces. Potting compound is poured into the opening to bond the handle to the tool head. The potting compound flows over the top surface of the spacers and forms a layer of potting compound which permanently holds the plug in place.
Inventors
- 👤 Joseph Allen Carmien
- 👤 John R Yuhos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:27
CPC Classifications
B; B25; B25G; B25G3/00; B25G3/34; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/473
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
187 words
An end plug for fiberglass tool handles or the like of the type having an elongated handle mounted within the eye opening of a tool head, said end plug comprising a body member disposed within the end of said opening in transverse overlying relationship to the end of said handle, and potting compound disposed within said opening and engaging said end plug and handle to hold said end plug and handle in fixed relationship to each other and to said tool head, said end plug having its outer periphery formed substantially complementarily and dimensionally equal to the cross-section of the inner periphery of said opening, the outer periphery of said end plug frictionally and resiliently engaging the inner periphery of said opening to maintain said end plug in place within said opening prior to the pouring of said potting compound, said end plug being formed of resilient material not bondable to said potting compound, said end plug having integral portions engagable with said potting compound to provide a physical interengagement which prevents displacement of said end plug from said potting compound after curing of said potting compound.
Claim 2
Dependent Claim
187 words
An end plug for fiberglass tool handles or the like of the type having an elongated handle mounted within the eye opening of a tool head, said end plug comprising a body member disposed within the end of said opening in transverse overlying relationship to the end of said handle, and potting compound disposed within said opening and engaging said end plug and handle to hold said end plug and handle in fixed relationship to each other and to said tool head, said end plug having its outer periphery formed substantially complementarily and dimensionally equal to the cross-section of the inner periphery of said opening, the outer periphery of said end plug frictionally and resiliently engaging the inner periphery of said opening to maintain said end plug in place within said opening prior to the pouring of said potting compound, said end plug being formed of resilient material not bondable to said potting compound, said end plug having integral portions engagable with said potting compound to provide a physical interengagement which prevents displacement of said end plug from said potting compound after curing of said potting compound.
Claim 3
Dependent Claim
187 words
An end plug for fiberglass tool handles or the like of the type having an elongated handle mounted within the eye opening of a tool head, said end plug comprising a body member disposed within the end of said opening in transverse overlying relationship to the end of said handle, and potting compound disposed within said opening and engaging said end plug and handle to hold said end plug and handle in fixed relationship to each other and to said tool head, said end plug having its outer periphery formed substantially complementarily and dimensionally equal to the cross-section of the inner periphery of said opening, the outer periphery of said end plug frictionally and resiliently engaging the inner periphery of said opening to maintain said end plug in place within said opening prior to the pouring of said potting compound, said end plug being formed of resilient material not bondable to said potting compound, said end plug having integral portions engagable with said potting compound to provide a physical interengagement which prevents displacement of said end plug from said potting compound after curing of said potting compound.
Claim 4
Dependent Claim
187 words
An end plug for fiberglass tool handles or the like of the type having an elongated handle mounted within the eye opening of a tool head, said end plug comprising a body member disposed within the end of said opening in transverse overlying relationship to the end of said handle, and potting compound disposed within said opening and engaging said end plug and handle to hold said end plug and handle in fixed relationship to each other and to said tool head, said end plug having its outer periphery formed substantially complementarily and dimensionally equal to the cross-section of the inner periphery of said opening, the outer periphery of said end plug frictionally and resiliently engaging the inner periphery of said opening to maintain said end plug in place within said opening prior to the pouring of said potting compound, said end plug being formed of resilient material not bondable to said potting compound, said end plug having integral portions engagable with said potting compound to provide a physical interengagement which prevents displacement of said end plug from said potting compound after curing of said potting compound.
Claim 5
Dependent Claim
34 words
The structure described in claim 1, one side of said body member being substantially flush with the end of said tool head, said side of said body member being exposed and carrying indicia thereon.
Claim 6
Dependent Claim
33 words
The structure described in claim 1, said end plug being black, said potting compound when cured appearing to be black to provide uniform coloration of the end of said tool without any coating.
Claim 7
Dependent Claim
45 words
The structure described in claim 1, said end plug comprising a body member having integraL spacers, said spacers having flat ends disposed inwardly from the exposed end of said opening, said potting compound being disposed in overlying relationship to said flat ends of said spacers.
Claim 8
Dependent Claim
34 words
The structure described in claim 4, one side of said body member being substantially flush with the end of said tool head, said side of said body member being exposed and carrying indicia thereon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |