Patent US4508544A successfully refreshed from Google Patents.
US3775802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mop frame
Assignee: SILCO Inc
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Filing: 1972-07-27
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Granted: 1973-12-04
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Expires: 1992-07-27
Abstract
Abstract Molded mop frame having a generally oval or rectangular outline including parallel front and back edges joined by end members. Transverse brace members near the center of the frame receive a steel bar for attachment to a handle. Longitudinal brace members extend from the transverse braces to the end members, with additional bracing provided between the longitudinal brace members and the front and back edges.
Inventors
- 👤 W Grassman
- 👤 M Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:02
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/20; A47L13/24; A47L13/254
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
135 words
A mop frame comprising: a. parallel front and back edge members; b. end members joining the ends of said front and back edge members to define a generally rectangular outline; c. a pair of parallel, spaced apart transverse brace members extending between said front and back edge members and arranged normal to said front and back edge members, said transverse brace members each having a central boss; d. a bar arranged parallel to said front and back edge members and secured to said bosses; e. a longitudinal brace member extending from each said transverse brace member to the nearest end member; and f. at least one set of additional brace members extending between each said longitudinal brace member and said front edge member and between each said longitudinal brace member and said rear edge member.
Claim 2
Dependent Claim
135 words
A mop frame comprising: a. parallel front and back edge members; b. end members joining the ends of said front and back edge members to define a generally rectangular outline; c. a pair of parallel, spaced apart transverse brace members extending between said front and back edge members and arranged normal to said front and back edge members, said transverse brace members each having a central boss; d. a bar arranged parallel to said front and back edge members and secured to said bosses; e. a longitudinal brace member extending from each said transverse brace member to the nearest end member; and f. at least one set of additional brace members extending between each said longitudinal brace member and said front edge member and between each said longitudinal brace member and said rear edge member.
Claim 3
Dependent Claim
22 words
The mop frame claimed in claim 1 wherein said additional brace members are angularly arranged and coverage at said longitudinal brace member.
Claim 4
Dependent Claim
43 words
The mop frame claimed in claim 1 wherein said front and back edge members, said end members, said transverse brace members, said longitudinal brace members, and said additional brace members all have a substantially flat bottom surface lying substantially in a common plane.
Claim 5
Dependent Claim
20 words
The mop frame claimed in claim 3 wherein all said members are of generally inverted T shape in cross section.
Claim 6
Dependent Claim
14 words
The mop frame claimed in claim 3 wherein all said members are of polypropylene.
Claim 7
Dependent Claim
13 words
The mop frame claimed in claim 5 wherein said bar is of steel.
Claim 8
Dependent Claim
26 words
The mop frame claimed in claim 1 wherein said transverse brace members are tapered in height from the center to said front and back edge members.
Claim 9
Dependent Claim
26 words
The mop frame as claimed in claim 1 wherein said longitudinal brace members are tapered in height from said transverse brace members to said end members.
Claim 10
Dependent Claim
26 words
The mop frame claimed in claim 1 wherein said front and back edge members, said end members, and said additional brace members are of uniform height.
Claim 11
Dependent Claim
28 words
The mop frame claimed in claim 1 including at least one diagonal brace member extending between each said transverse brace member and said front and back edge members.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |