Patent US3824772A successfully refreshed from Google Patents.
US3824772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turf maintenance machine
Assignee: Hahn Inc
•
Filing: 1973-02-26
•
Granted: 1974-07-23
•
Expires: 1993-02-26
Abstract
Abstract A turf maintenance machine comprising a vehicle with a plurality of reels connected to the vehicle. Each reel includes a front support roller and rear support roller between which the usual rotary blade and knife bar are disposed, and an additional rear support roller which is mounted for movement between a lower ground engaging position and an upper position. When the additional roller is in its lower position, the first said rear roller is raised above the ground to raise the knife bar. A rotary brush is provided for cleaning the first said rear roller during the cutting operation. Each reel is connected to the vehicle by a support member with the connection between the reel and the support member providing for pivotal movement of the reel relative to the support member about an axis parallel to the axis of its said front roller. Each support member is then connected to the vehicle for pivotal movement about an axis perpendicular to the axis of the front roller of its associated reel.
Inventors
- 👤 C Sorenson
- 👤 C Stubblefield
- 👤 H Bourassa
- 👤 Baillie A De
- 👤 R Bramley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:58
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/42; A01D34/43; A01D2101/00; Y; Y10; Y10S; Y10S56/00; Y10S56/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
316 words
A turf maintenance machine comprising a vehicle, a plurality of grass cutting reels operatively connected to said vehicle for movement therewith, each said reel including a frame assembly, an axially elongated rotary blade journal mounted on said frame assembly for rotation about an axis generally parallel to the ground, a knife bar extending axially along and underneath said rotary blade and arranged to cooperate with said rotary blade in clipping grass, a front roller journal mounted on said frame assembly forwardly of said knife bar for rotation about an axis parallel to said rotary blade axis, said front roller being mounted so that the position of its journal axis relative to said frame assembly is stationary, a rear roller journal mounted on said frame assembly rearwardly of said knife bar for rotation about an axis parallel to said rotary blade axis, said front and rear rollers being arranged movably to support said frame aSsembly on the ground, an additional roller journal mounted for rotation about an axis parallel to said rotary blade axis, and means for mounting said additional roller on said frame assembly for movement between a lower ground engaging position and an upper position, said additional roller and its said mounting means being proportioned and designed such that, when said additional roller is in its lower position, said rear roller is raised above the ground to raise said knife bar and a support member for each said reel, each said reel being connected to its support member for pivotal movement relative to the support member about an axis parallel to the axis of its said front roller, an arm extending outwardly from said machine for each reel, means for connecting each said support member to its associated arm for pivotal movement relative to said arm about an axis perpendicular to the axis of said front roller and generally horizontally and longitudinally of said machine.
Claim 2
Dependent Claim
316 words
A turf maintenance machine comprising a vehicle, a plurality of grass cutting reels operatively connected to said vehicle for movement therewith, each said reel including a frame assembly, an axially elongated rotary blade journal mounted on said frame assembly for rotation about an axis generally parallel to the ground, a knife bar extending axially along and underneath said rotary blade and arranged to cooperate with said rotary blade in clipping grass, a front roller journal mounted on said frame assembly forwardly of said knife bar for rotation about an axis parallel to said rotary blade axis, said front roller being mounted so that the position of its journal axis relative to said frame assembly is stationary, a rear roller journal mounted on said frame assembly rearwardly of said knife bar for rotation about an axis parallel to said rotary blade axis, said front and rear rollers being arranged movably to support said frame aSsembly on the ground, an additional roller journal mounted for rotation about an axis parallel to said rotary blade axis, and means for mounting said additional roller on said frame assembly for movement between a lower ground engaging position and an upper position, said additional roller and its said mounting means being proportioned and designed such that, when said additional roller is in its lower position, said rear roller is raised above the ground to raise said knife bar and a support member for each said reel, each said reel being connected to its support member for pivotal movement relative to the support member about an axis parallel to the axis of its said front roller, an arm extending outwardly from said machine for each reel, means for connecting each said support member to its associated arm for pivotal movement relative to said arm about an axis perpendicular to the axis of said front roller and generally horizontally and longitudinally of said machine.
Claim 3
Dependent Claim
115 words
The machine of claim 1 in which said vehicle comprises a rear frame portion, a front frame portion, means for connecting said front frame portion to said rear frame portion for pivotal movement about a steering axis, rear wheel means for movably supporting said rear frame portion, front wheel means for movably supporting said front frame portion, and means for connecting said front wheel means to said front frame portion for pivotal movement about an axis extending generally perpendicularly to the rotational axis for said front wheel means, longitudinally of said machine, and generally parallel to the said axes about which said support members pivot, said support members being carried by said front frame portion.
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |