Patent US4043101A successfully refreshed from Google Patents.
US4043101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edger-trimmer head indexing mechanism
Assignee: Porter Cable Corp
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Filing: 1974-01-21
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Granted: 1977-08-23
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Expires: 1994-01-21
Abstract
Abstract An improved indexing means for a garden edger-trimmer having interengaging surfaces on the end of the handle and the head housing for selectively positioning the head.
Inventors
- 👤 Fred H. Lahr
- 👤 Roger W. Murley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:25
CPC Classifications
A; A01; A01G; A01G3/00; A01G3/06; A01G3/062
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
101 words
In a combination grass trimmer and edger having a housing mounted for selective rotation about one end of an elongated handle, an electric motor in said housing, a shaft-mounted rotatable blade operatively connected to said motor, ground-engaging wheels mounted near said one end of said elongated handle, switch means in the other end of said handle, means for connecting said motor to a source of electric power through said switch means, the improvement comprising: notches in said one end of said handle and internal bosses in said housing, said handle and said housing being spring biased into engagement with each other.
Claim 2
Dependent Claim
101 words
In a combination grass trimmer and edger having a housing mounted for selective rotation about one end of an elongated handle, an electric motor in said housing, a shaft-mounted rotatable blade operatively connected to said motor, ground-engaging wheels mounted near said one end of said elongated handle, switch means in the other end of said handle, means for connecting said motor to a source of electric power through said switch means, the improvement comprising: notches in said one end of said handle and internal bosses in said housing, said handle and said housing being spring biased into engagement with each other.
Claim 3
Dependent Claim
117 words
A tool for trimming and for edging grass, comprising a housing enclosing a motor and shaft-mounted cutter, an elongated handle having ground-engaging wheels mounted thereon, means for connecting said motor to a source of power, and drive means connecting said motor and said cutter, said housing being mounted on an end of said elongated handle adjacent said ground-engaging wheels and having internal bosses adapted for engagement with notches in the end of said handle for selectively arcuately positioning said housing relative to said handle and said ground-engaging wheels, and said housing also having an internal groove cooperating with a pin fixed in said handle for limiting longitudinal and rotational movement of said housing relative to said handle.
Claim 4
Dependent Claim
117 words
A tool for trimming and for edging grass, comprising a housing enclosing a motor and shaft-mounted cutter, an elongated handle having ground-engaging wheels mounted thereon, means for connecting said motor to a source of power, and drive means connecting said motor and said cutter, said housing being mounted on an end of said elongated handle adjacent said ground-engaging wheels and having internal bosses adapted for engagement with notches in the end of said handle for selectively arcuately positioning said housing relative to said handle and said ground-engaging wheels, and said housing also having an internal groove cooperating with a pin fixed in said handle for limiting longitudinal and rotational movement of said housing relative to said handle.
Claim 5
Dependent Claim
38 words
The tool of claim 2, wherein said housing and said handle are biased into mating engagement in selected positions by means of a spring surrounding said handle and having its ends abutting said housing and said pin, respectively.
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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |