Patent US4117983A successfully refreshed from Google Patents.
US4117983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leaf collector and comminutor
Assignee: Individual
•
Filing: 1977-10-27
•
Granted: 1978-10-03
•
Expires: 1997-10-27
Abstract
Abstract A leaf collector and comminutor is disclosed having a collection receptacle in the form of a bag and a housing for delivery of comminuted tree leaves into the bag, the housing having thereon a motor driven rotary blade assembly, having a fan portion and a leaf comminuting portion resiliently mounted on the fan portion, for the suction collection and comminution of the leaves to reduce their bulk and for delivery of the disintegrated leaves into the bag, a spring held shearing bar being provided with openings for passage of end portions of the blades, the mounting of the leaf comminuting portion of the blade and the mounting of the shearing bar providing safety features in the event that sticks or stones enter the housing.
Inventors
- 👤 Paul E. Browning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:03
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/08; E01H1/0827; E01H1/0836; A; A01; A01G; A01G3/00; A01G3/002; B; B02; B02C; B02C13/00; B02C13/02; B02C13/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
210 words
A mobile leaf collector and comminutor comprising a frame, spaced wheels supporting said frame, a collection receptacle carried by said frame rearwardly of said wheels, a driving motor carried by said frame above said wheels and having a rotary drive shaft, a blade housing disposed forwardly of said wheels and into which said drive shaft extends, said blade housing having a portion communicating with the interior of said receptacle, a blade hub mounted on said shaft for rotation therewith, a plurality of blade members having cutting edge portions, a leaf spring connecting a plurality of said blade members with said blade hub for yieldingly retaining said blade members in operating position, a plurality of shear bars pivotally mounted on said housing and having a resilient member for yieldingly retaining said bars in operating position, said shear bars being spaced for passage therebetween of said blade members for comminution of leaves in said housing, a downwardly extending leaf pick up nozzle carried by and extending forwardly of said housing and having a horizontal opening for entry of leaves and delivery of leaves to the interior of said housing, and said blade hub having an associated fan portion for drawing leaves into said housing and delivery of comminuted leaves into said receptacle.
Claim 2
Dependent Claim
210 words
A mobile leaf collector and comminutor comprising a frame, spaced wheels supporting said frame, a collection receptacle carried by said frame rearwardly of said wheels, a driving motor carried by said frame above said wheels and having a rotary drive shaft, a blade housing disposed forwardly of said wheels and into which said drive shaft extends, said blade housing having a portion communicating with the interior of said receptacle, a blade hub mounted on said shaft for rotation therewith, a plurality of blade members having cutting edge portions, a leaf spring connecting a plurality of said blade members with said blade hub for yieldingly retaining said blade members in operating position, a plurality of shear bars pivotally mounted on said housing and having a resilient member for yieldingly retaining said bars in operating position, said shear bars being spaced for passage therebetween of said blade members for comminution of leaves in said housing, a downwardly extending leaf pick up nozzle carried by and extending forwardly of said housing and having a horizontal opening for entry of leaves and delivery of leaves to the interior of said housing, and said blade hub having an associated fan portion for drawing leaves into said housing and delivery of comminuted leaves into said receptacle.
Claim 3
Dependent Claim
31 words
A mobile leaf collector and comminutor as defined in claim 1 in which said collection receptacle is a bag with portions for discharge of air delivered thereto from said blade housing.
Claim 4
Dependent Claim
57 words
A mobile leaf collector and comminutor as defined in claim 1 in which said blade hub has a plurality of plates extending therefrom constituting said fan portion, a blade block is provided carrying a plurality of said blade members, and said leaf spring is connected to one of said plates and to one of said blade blocks.
Claim 5
Dependent Claim
39 words
A mobile leaf collector and comminutor as defined in claim 1 in which mounting plates are provided on said blade housing, said shear bars are pivotally mounted on said mounting plates, and said resilient member is a leaf spring.
Claim 6
Dependent Claim
36 words
A mobile leaf collector and comminutor as defined in claim 1 in which a plurality of said shear bars are provided at spaced locations around the periphery of said housing for successive passage of said blades.
Claim 7
Dependent Claim
54 words
A mobile leaf collector and comminutor as defined in claim 1 in which a plurality of said shear bars are mounted on a shear bar hub, said shear bar hub is pivotally mounted on said housing, and said shear bar hub has a portion extending therefrom for applying a force on said resilient member.
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) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |