Patent US2434570A successfully refreshed from Google Patents.
Patent US5031389A successfully refreshed from Google Patents.
US5031389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double mower
Assignee: Individual
•
Filing: 1990-05-21
•
Granted: 1991-07-16
•
Expires: 2010-05-21
Abstract
Abstract A construction having two separately operable mowers driven by a single tractor unit. The tractor drives our double gear box, which is operably connected to drive two laterally spaced separate gear boxes, each of which drives grass cutting blades. Each of the two mowers has four wheels at the rear to permit elevating or lowering the grass cutting blade to control the degree of cut. With this construction it is possible to cut the grass regardless of the elevation of the grass. One of the units can be mowing the grass on a horizontal portion of a bed, while the other unit is operating on the slope of one of the beds. It is also readily possible to mow the grass at the bottom of the v shaped area between two beds.
Inventors
- 👤 Valda E. Yawn
- 👤 Patricia Yawn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:57
CPC Classifications
A; A01; A01D; A01D75/00; A01D75/30; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66; A01D34/661; Y; Y10; Y10S; Y10S56/00; Y10S56/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A double mower comprising a central longitudinally extending carrier frame member, a driving shaft, a double gear box secured to the longitudinally extending carrier frame and operably connected to the driving shaft, laterally spaced gear boxes on opposite sides of the double gear box, longitudinally spaced blade gear boxes, drive shafts between the laterally spaced gear boxes and the longitudinally spaced blade gear boxes, rotatable blades driven by the longitudinally spaced gear boxes, mower blade hoods overlying the laterally spaced mower blades, and hinge connecting means between the carrier frame and the mower blade hoods.
Claim 2
Dependent Claim
95 words
A double mower comprising a central longitudinally extending carrier frame member, a driving shaft, a double gear box secured to the longitudinally extending carrier frame and operably connected to the driving shaft, laterally spaced gear boxes on opposite sides of the double gear box, longitudinally spaced blade gear boxes, drive shafts between the laterally spaced gear boxes and the longitudinally spaced blade gear boxes, rotatable blades driven by the longitudinally spaced gear boxes, mower blade hoods overlying the laterally spaced mower blades, and hinge connecting means between the carrier frame and the mower blade hoods.
Claim 3
Dependent Claim
18 words
The invention defined in claim 1 wherein the hinge connecting means are elongated and have solid pin cores.
Claim 4
Dependent Claim
38 words
The invention defined in claim 1 wherein the blades of the longitudinally spaced gear boxes overlap each other in the area between the gear boxes because of the laterally spaced gear box drive the blades do not clash.
Claim 5
Dependent Claim
77 words
A grass cutting mower comprising a double gear box, two laterally spaced gear boxes on opposite sides of the double gear box, and elongated carrier for the double gear box and laterally spaced apart mower units on opposite sides of the elongated carrier, hinged connecting means between the elongated carrier and the spaced apart mower units, each mower unit having a blade gear box, drive shafts between the laterally spaced gear boxes and the blade gear boxes.
Claim 6
Dependent Claim
77 words
A grass cutting mower comprising a double gear box, two laterally spaced gear boxes on opposite sides of the double gear box, and elongated carrier for the double gear box and laterally spaced apart mower units on opposite sides of the elongated carrier, hinged connecting means between the elongated carrier and the spaced apart mower units, each mower unit having a blade gear box, drive shafts between the laterally spaced gear boxes and the blade gear boxes.
Claim 7
Dependent Claim
38 words
The invention defined in claim 4 wherein the hinged mower units are operable to mow grass at different angular elevations when one of the mower units is operating at a different angular relation relative to the other mower.
Claim 8
Dependent Claim
88 words
A double mower comprising a driving shaft, a double gear box operably connected with the driving shaft, laterally spaced gear boxes on opposite sides of the double gear box and operably connected with the double gear box, longitudinally spaced mower blade gear boxes, drive shafts interconnecting the longitudinally spaced mower blade gear boxes and the laterally spaced gear boxes, mower blades driven by the mower blade gear boxes, mower blade hoods overlying the laterally spaced mower blades, and hinged connecting means between the laterally spaced mower blade hoods.
Claim 9
Dependent Claim
88 words
A double mower comprising a driving shaft, a double gear box operably connected with the driving shaft, laterally spaced gear boxes on opposite sides of the double gear box and operably connected with the double gear box, longitudinally spaced mower blade gear boxes, drive shafts interconnecting the longitudinally spaced mower blade gear boxes and the laterally spaced gear boxes, mower blades driven by the mower blade gear boxes, mower blade hoods overlying the laterally spaced mower blades, and hinged connecting means between the laterally spaced mower blade hoods.
Claim 10
Dependent Claim
62 words
The invention defined in claim 6 wherein a front wheel mounted on an angularly inclined pivoted strut carried by each of the mower blade hoods are provided to guide the front end of the mower over irregularities of land, and spaced rear wheels carried by each of the mower blade hoods are provided to control the depth of cut of the mower.
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) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |