Patent US929317A successfully refreshed from Google Patents.
Patent US3654754A successfully refreshed from Google Patents.
US3654754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rake head
Assignee: MODERN PLASTIC SALES
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Filing: 1970-12-21
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Granted: 1972-04-11
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Expires: 1990-12-21
Abstract
Abstract A multipurpose hand rake designed for rug and carpet rejuvenation, as well as lawn and garden use, has a virtually indestructible head molded from a thermoplastic resin and including a plurality of equally spaced, flexible teeth or tines extending in fan-shaped relation from a convex edge of a base plate to which a handle is removably attached. The teeth are provided with elongated, entirely unconfined shanks that are highly vibratory in all directions and include angularly offset, pulsating fingers having flat, terminal ends which provide a trip-hammer action for beating into matted floor coverings to loosen dirt and raise the nap, all without snagging and without damage, such as pulling out bonded tufts. The fingers also penetrate deeply into heavy turf and thick, dense mats to loosen and easily remove leaves, grass cuttings, thatch and other debris without damage to live, decorative growth.
Inventors
- 👤 Baxter I Scoggin Jr
- 👤 Woodrow E Vaughan
- 👤 Gerald D Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:46
CPC Classifications
A; A01; A01D; A01D7/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
133 words
In a hand rake, a supporting plate of thermoplastic resin having an elongated, longitudinally convex edge; and a plurality of identical, equally spaced rake teeth extending outwardly in fan-shaped relation from said edge, each tooth having a normally straight, elongated, flexible shank integral at one end thereof with said edge, and an elongated, straight, relatively short finger integral with the opposite end of the shank, said fingers extending outwardly and downwardly from their shanks at an angle of less than 90 degrees and terminating in flat, outwardly and downwardly facing tips, the spacing between the teeth progressively increasing from said plate to said tips, said teeth being entirely unconfined throughout the lengths of their shanks and their fingers from said plate to said tips for free flexing and vibrating action in all directions.
Claim 2
Dependent Claim
133 words
In a hand rake, a supporting plate of thermoplastic resin having an elongated, longitudinally convex edge; and a plurality of identical, equally spaced rake teeth extending outwardly in fan-shaped relation from said edge, each tooth having a normally straight, elongated, flexible shank integral at one end thereof with said edge, and an elongated, straight, relatively short finger integral with the opposite end of the shank, said fingers extending outwardly and downwardly from their shanks at an angle of less than 90 degrees and terminating in flat, outwardly and downwardly facing tips, the spacing between the teeth progressively increasing from said plate to said tips, said teeth being entirely unconfined throughout the lengths of their shanks and their fingers from said plate to said tips for free flexing and vibrating action in all directions.
Claim 3
Dependent Claim
23 words
In a hand rake as claimed in claim 1, said fingers having circular crOss-sectional configurations of substantially uniform diameters throughout the lengths thereof.
Claim 4
Dependent Claim
22 words
In a hand rake as claimed in claim 1, the cross-sectional area of each shank progressively increasing as said edges are approached.
Claim 5
Dependent Claim
19 words
In a hand rake as claimed in claim 1, each shank having an oval cross-sectional configuration at said edge.
Claim 6
Dependent Claim
22 words
In a hand rake as claimed in claim 4, the minor transverse axes of said shanks at said edge extending laterally thereof.
Claim 7
Dependent Claim
25 words
In a hand rake as claimed in claim 5, the lengths of the major axes of said shanks progressively increasing as said edge is approached.
Claim 8
Dependent Claim
37 words
In a hand rake as claimed in claim 5, said shanks having circular cross-sectional configurations at said fingers, the lengths of said minor axes being substantially the same as the diameters of the shanks at said fingers.
Claim 9
Dependent Claim
30 words
In a hand rake as claimed in claim 7, said fingers being provided with circular cross-sectional configurations having diameters substantially equal to said diameters of the shanks at the fingers.
Claim 10
Dependent Claim
24 words
In a hand rake as claimed in claim 1, said edge being transversely convex, the bights between the shanks at said edge being concave.
Claim 11
Dependent Claim
32 words
In a hand rake as claimed in claim 1, said plate being substantially triangular and provided with a pair of opposed, arcuate corners at said edge projecting outwardly beyond the proximal shanks.
Claim 12
Dependent Claim
28 words
In a hand rake as claimed in claim 10; and an internally threaded, rearwardly opening, handle-receiving socket integral with the plate at the third corner of the latter.
Claim 13
Dependent Claim
39 words
In a hand rake as claimed in claim 1, each shank having a second, elongated, straight, relatively short finger integral with said opposite end thereof, extending outwardly and upwardly and terminating in a flat, outwardly and upwardly facing tip.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |