Patent US5381950A successfully refreshed from Google Patents.
Patent US3708968A successfully refreshed from Google Patents.
US3708968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined lawn mower, lawn vacuum and debris collector
Assignee: Toro Co
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Filing: 1971-11-01
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Granted: 1973-01-09
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Expires: 1991-11-01
Abstract
Abstract A combined lawn mower, lawn vacuum and debris collector includes a housing for a rotary lawn mower blade, a discharge chute for air entrained debris leading from the lower housing to a separator which separates debris from the air, a collector for receipt of separated debris and a return chute for separated air, said return chute having an outlet in said housing for recirculating said separated air back to the mower housing.
Inventors
- 👤 E Enters
- 👤 E Detjen
- 👤 R Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:14
CPC Classifications
A; A01; A01D; A01D43/00; A01D43/06; A01D43/063; A01D2101/00; A01D34/00; A01D34/01; A01D34/412; A01D34/63
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
96 words
A combined lawn mower, lawn vacuuM and debris collector comprising a housing for a rotary lawn mower blade, a discharge chute for air and debris impelled by the blade leading from the mower housing to a separator for separating debris from the air, a disposable collector bag releasably attached to the separator for initial collection of separated debris in said disposable collector bag and a return chute from said separator to a return chute outlet in said housing for returning separated air from the separator to the housing and recirculating said air back to the separator.
Claim 2
Dependent Claim
96 words
A combined lawn mower, lawn vacuuM and debris collector comprising a housing for a rotary lawn mower blade, a discharge chute for air and debris impelled by the blade leading from the mower housing to a separator for separating debris from the air, a disposable collector bag releasably attached to the separator for initial collection of separated debris in said disposable collector bag and a return chute from said separator to a return chute outlet in said housing for returning separated air from the separator to the housing and recirculating said air back to the separator.
Claim 3
Dependent Claim
31 words
The invention of claim 1 in which the discharge chute leads from the periphery of the mower housing, said return chute outlet being disposed at the eye of said mower housing.
Claim 4
Dependent Claim
15 words
The invention of claim 1 in which said disposable collector bag is substantially air impervious.
Claim 5
Dependent Claim
42 words
The invention of claim 1 in which said separator comprises a rotor having spaced blades between which air is transferred from the discharge chute to the return chute, said blades having debris impelling paddles for throwing debris into said disposable collector bag.
Claim 6
Dependent Claim
63 words
The invention of claim 4 in which said separator comprises a rotor housing having an axle on which the rotor turns, said housing having ports for the adjacent ends of said chutes aligned at opposite sides of said housing and at one side of said axle whereby said blades sweep across the space between said ports to intercept debris fed to said separator.
Claim 7
Dependent Claim
56 words
The invention of claim 1 in which said separator comprises a housing having ports for the adjacent ends of said chutes aligned at opposite sides of said housing, and a baffle intermediate said ports for deflecting both air and debris from said discharge chute into said disposable collector bag and returning air into said return chute.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |