Patent US5621882A successfully refreshed from Google Patents.
Patent US3807151A successfully refreshed from Google Patents.
US3807151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guard plate construction for trimmer-edgers
Assignee: Black and Decker Corp
•
Filing: 1973-01-02
•
Granted: 1974-04-30
•
Expires: 1993-01-02
Abstract
Abstract A trimmer-edger including a housing supported for movement by wheels and having an upstanding control handle. The housing encloses a motor and defines a cutting chamber in which a motor driven, rotary blade is disposed. A swing-away guard plate is carried by the housing and covers the cutting chamber. The guard plate is manually releasable for swing-away movement thereby permitting debris removal from the cutting chamber, as well as blade removal and/or replacement.
Inventors
- 👤 F Rosenthal
- 👤 S Ehrlich
- 👤 P Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:02
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/835; A01D34/84
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
218 words
In a power-operated cutter assembly for edging, trimming, or the like comprising in combination a housing constructed for movement along the ground, a handle extending upwardly from said housing and facilitating manual control and manipulation of said housing along the ground; a blade mounted in a cavity in said housing, a guard plate disposed at one side of the blade for protecting against accidental contact with the blade or leaving the blade exposed; the improvement including means pivotally mounting said guard plate on said housing for movement outwardly therefrom for permitting ready access to the blade in said cavity for cleaning out of accumulated debris and changing and/or sharpening the blade, manually releasable latch means including cooperating portions on said housing and said guard plate for retaining the guard plate in a normal fixed protecting relation on said housing and overlaying said cavity, said latch means comprising a rotatable bolt having a terminal, lateral abutment, said guard platE having a slot portion opening into one edge thereof and through which said bolt extends and through which said lateral abutment will pass, said guard plate including a lateral recess communicating with said slot and opening toward an outer surface portion of said guard plate for receiving the lateral abutment therein when said guard plate is secured against pivotal movement.
Claim 2
Dependent Claim
218 words
In a power-operated cutter assembly for edging, trimming, or the like comprising in combination a housing constructed for movement along the ground, a handle extending upwardly from said housing and facilitating manual control and manipulation of said housing along the ground; a blade mounted in a cavity in said housing, a guard plate disposed at one side of the blade for protecting against accidental contact with the blade or leaving the blade exposed; the improvement including means pivotally mounting said guard plate on said housing for movement outwardly therefrom for permitting ready access to the blade in said cavity for cleaning out of accumulated debris and changing and/or sharpening the blade, manually releasable latch means including cooperating portions on said housing and said guard plate for retaining the guard plate in a normal fixed protecting relation on said housing and overlaying said cavity, said latch means comprising a rotatable bolt having a terminal, lateral abutment, said guard platE having a slot portion opening into one edge thereof and through which said bolt extends and through which said lateral abutment will pass, said guard plate including a lateral recess communicating with said slot and opening toward an outer surface portion of said guard plate for receiving the lateral abutment therein when said guard plate is secured against pivotal movement.
Claim 3
Dependent Claim
31 words
The structure as claimed in claim 1 in which spring means is interposed between said bolt and said housing for normally urging said lateral abutment into engagement with said lateral recess.
Claim 4
Dependent Claim
58 words
The structure as claimed in claim 2 in which said bolt is of such a length to permit it to be depressed and rotated against the action of said spring means for removing the lateral abutment out of the recess and into alignment with said slot portion whereby the guard plate can be pivoted away from said housing.
Claim 5
Dependent Claim
66 words
The structure as claimed in claim 3 in which said housing includes a depending skirt having a lower edge upon which said guard plate is normally disposed in guarding relation, said skirt including a pair of spaced panel portions, said guard plate including integral pivot-ear elements, and a pivot pin extending transversely through said panel portions and pivot-ear elements and retaining the parts in assembled relation.
Claim 6
Dependent Claim
203 words
A power-operated trimming or edging tool comprising: a housing including a rotatable blade, a skirt substantially enclosing said blade, a guard plate pivotally mounted at one side of said skirt on a transverse axis of rotation for movement outwardly from said housing and manually-releasable latch means including cooperating means on said housing and said guard plate for normally retaining the guard plate in juxtaposed relation to said blade, said latch means comprising a tunnel portion in said housing, a bolt element journaled for rotation and longitudinal displacement in said tunnel, said bolt element including an operating knob exposed at the exterior of said housing, spring means interposed between said tunnel and said operating knob for normally urging the operating knob away said guard plate, said guard plate including a slot opening into one edge thereof and through which said bolt projects, said bolt terminating in a lateral latch portion movable relative to said slot for permitting the guard plate to move thereby, said guard plate including a recess on an outer surface portion thereof communicating with said slot and substantially conforming to the lateral latch portion of said bolt for receiving the lateral latch portion for retaining the guard plate against pivotal movement.
Claim 7
Dependent Claim
203 words
A power-operated trimming or edging tool comprising: a housing including a rotatable blade, a skirt substantially enclosing said blade, a guard plate pivotally mounted at one side of said skirt on a transverse axis of rotation for movement outwardly from said housing and manually-releasable latch means including cooperating means on said housing and said guard plate for normally retaining the guard plate in juxtaposed relation to said blade, said latch means comprising a tunnel portion in said housing, a bolt element journaled for rotation and longitudinal displacement in said tunnel, said bolt element including an operating knob exposed at the exterior of said housing, spring means interposed between said tunnel and said operating knob for normally urging the operating knob away said guard plate, said guard plate including a slot opening into one edge thereof and through which said bolt projects, said bolt terminating in a lateral latch portion movable relative to said slot for permitting the guard plate to move thereby, said guard plate including a recess on an outer surface portion thereof communicating with said slot and substantially conforming to the lateral latch portion of said bolt for receiving the lateral latch portion for retaining the guard plate against pivotal movement.
Claim 8
Dependent Claim
133 words
A power-operated tool for trimming, edging, or the like comprising a housing supported for movement along the ground, a motor on said housing and drivingly engaging a rotary blade, an upstanding handle connected to said housing for control and manipulation of said tool, said blade rotating in a cavity defined by walls of said housing and normally closed by a cover plate, said cover plate having an exterior surface formed with a recess and being pivotally connected to said housing for movement away therefrom for exposing said blade and said cavity, an operable latch means interconnecting said cover plate to said housing opposite said pivot, said latch including manually operable means carried by said housing and receivable in said cover plate recess to releasably retain said cover plate closed against said housing walls.
Claim 9
Dependent Claim
133 words
A power-operated tool for trimming, edging, or the like comprising a housing supported for movement along the ground, a motor on said housing and drivingly engaging a rotary blade, an upstanding handle connected to said housing for control and manipulation of said tool, said blade rotating in a cavity defined by walls of said housing and normally closed by a cover plate, said cover plate having an exterior surface formed with a recess and being pivotally connected to said housing for movement away therefrom for exposing said blade and said cavity, an operable latch means interconnecting said cover plate to said housing opposite said pivot, said latch including manually operable means carried by said housing and receivable in said cover plate recess to releasably retain said cover plate closed against said housing walls.
Claim 10
Dependent Claim
170 words
A power-operated tool for trimming, edging, or the like comprising a housing supported for movement along the ground, a motor on said housing and drivingly engaging a rotary blade, an upstanding handle connected to said housing for control and manipulation of said tool, said blade rotating in a cavity defined by walls of said housing and normally closed by a cover plate, said cover plate having an exterior surface formed with a recess and being pivotally connected to said housing for movement away therefrom for exposing said blade and said cavity, operable latch means iNterconnecting said cover plate to said housing opposite said pivot, said latch including manually operable means carried by said housing and receivable in said cover plate recess to releasably retain said cover plate closed against said housing walls, said manually operable latch means including a spring biased plunger slidably disposed on said housing and having a portion receivable in said recess in said cover plate for securely retaining said cover plate in position closing said cavity.
Claim 11
Dependent Claim
170 words
A power-operated tool for trimming, edging, or the like comprising a housing supported for movement along the ground, a motor on said housing and drivingly engaging a rotary blade, an upstanding handle connected to said housing for control and manipulation of said tool, said blade rotating in a cavity defined by walls of said housing and normally closed by a cover plate, said cover plate having an exterior surface formed with a recess and being pivotally connected to said housing for movement away therefrom for exposing said blade and said cavity, operable latch means iNterconnecting said cover plate to said housing opposite said pivot, said latch including manually operable means carried by said housing and receivable in said cover plate recess to releasably retain said cover plate closed against said housing walls, said manually operable latch means including a spring biased plunger slidably disposed on said housing and having a portion receivable in said recess in said cover plate for securely retaining said cover plate in position closing said cavity.
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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |