Patent US4345351A successfully refreshed from Google Patents.
US4345351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extension handle for dust mops and the like
Assignee: Rubbermaid Commercial Products LLC
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Filing: 1981-03-02
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Granted: 1982-08-24
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Expires: 2001-03-02
Abstract
Abstract Extension handle consists of a pair of telescoping handle parts made out of relatively thin-walled plastic tubing. A protrusion on the outer wall of the inner tubular member, formed as by inserting a pop rivet therethrough, frictionally engages the inner wall of the outer tubular member to provide some drag or resistance to axial movement of the tubular members relative to each other. The outer tubular member, being made of relatively thin-walled plastic tubing, will deform more or less according to the amount of interference between the rivet and inner wall of the outer tubular member. A rigid metal or plastic ring at the inner end of the outer tubular member acts as an abutment or stop for the protrusion on the inner tubular member thus preventing the telescoping handle parts from being completely pulled apart.
Inventors
- 👤 Theron C. Moss
- 👤 Earl Boring
- 👤 Jerry Hjellum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:07
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
An extension handle for dust mops and the like comprising an outer tubular member and an inner tubular member telescopically received in said outer tubular member, said inner and outer tubular members beiang axially movable relative to each other to vary the length of said extension handle, one of said tubular members having a protrusion thereon frictionally engaging the other tubular member to provide sufficient resistance to such relative axial movement to retain said extension handle in the desired adjusted position during use, and the other tubular member being made of relatively thin-walled plastic tubing to permit some deformation thereof according to the amount of interference between said protrusion and said other tubular member.
Claim 2
Dependent Claim
114 words
An extension handle for dust mops and the like comprising an outer tubular member and an inner tubular member telescopically received in said outer tubular member, said inner and outer tubular members beiang axially movable relative to each other to vary the length of said extension handle, one of said tubular members having a protrusion thereon frictionally engaging the other tubular member to provide sufficient resistance to such relative axial movement to retain said extension handle in the desired adjusted position during use, and the other tubular member being made of relatively thin-walled plastic tubing to permit some deformation thereof according to the amount of interference between said protrusion and said other tubular member.
Claim 3
Dependent Claim
19 words
The extension handle of claim 1 wherein both of said tubular members are made of relatively thin-walled plastic tubing.
Claim 4
Dependent Claim
30 words
The extension handle of claim 2 wherein said protrusion is on the outer wall of said inner tubular member and frictionally engages the inner wall of said outer tubular member.
Claim 5
Dependent Claim
38 words
The extension handle of claim 3 wherein said protrusion comprises a metal rivet inserted through the wall of said inner tubular member and extending outwardly therefrom into frictional engagement with the inner wall of said outer tubular member.
Claim 6
Dependent Claim
51 words
The extension handle of claim 3 further comprising a rigid ring, and means for retaining said ring at the inner end of said outer tubular member, said ring acting as a stop for said protrusion preventing axial outward movement of said protrusion beyond the inner end of said outer tubular member.
Claim 7
Dependent Claim
62 words
The extension handle of claim 5 wherein said means for retaining said ring at the inner end of said outer tubular member comprises a plastic sleeve having an inturned flange at its outer end overlying the outer end of said ring, said sleeve extending axially inwardly beyond the outer end of said outer tubular member in close contact therewith and secured thereto.
Claim 8
Dependent Claim
54 words
The extension handle of claim 5 wherein said protrusion on said inner tubular member is axially spaced from the innermost end of said inner tubular member a sufficient distance that when said extension handle is fully extended, there is still sufficient overlap between said inner and outer tubular members to provide adequate support therebetween.
Claim 9
Dependent Claim
50 words
The extension handle of claim 1 further comprising a plastic hand grip secured to the outer end of said outer tubular member, said hand grip providing a closure for said outer end limiting the extent of axial inward movement of said inner tubular member relative to said outer tubular member.
Claim 10
Dependent Claim
71 words
The extension handle of claim 8 wherein the length of said inner tubular member is sufficiently greater than the length of said outer tubular member that when said inner tubular member is fully retracted within said outer tubular member, said inner tubular member extends beyond the outer end of said outer tubular member a sufficient distance to support a duster head and the like thereon outwardly of said outer tubular member.
Claim 11
Dependent Claim
23 words
The extension handle of claim 9 further comprising means on said inner tubular member for securing a duster head and the like thereto.
Claim 12
Dependent Claim
55 words
The extension handle of claim 10 wherein said last-mentioned means comprises a rivet extending outwardly from the outer wall of said inner tubular member for tying a duster head and the like thereto, said rivet being located on said inner tubular member outwardly of said outer tubular member when said extension handle is fully retracted.
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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |