Patent US3893372A successfully refreshed from Google Patents.
US3893372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finishing tool
Assignee: Individual
•
Filing: 1973-08-06
•
Granted: 1975-07-08
•
Expires: 1993-08-06
Abstract
Abstract A hand operated power tool for finish trimming an edge of a structure such as a counter top. The tool has the capability of trimming the edge at various angles of bevel or as a square corner, both as a right and left hand trimmer, and operating in difficult access areas, such as a ''''blind corner''''. The tool comprises a housing having a forwardly extending right angle transmission assembly terminating in a downwardly extending forwardly positioned shaft on which is mounted a cutter head. To position the tool properly for movement along the counter edge portion, the tool has an adjustable base comprising two platelike feet connected to the tool housing by forward and rear leg assemblies. The leg assemblies are angularly adjustable so as to permit adjustment of the position of the tool with respect to both the angle and depth of cut. A stop member is provided to facilitate operation of the tool in a blind corner.
Inventors
- 👤 Heinz Strakeljahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:13
CPC Classifications
B; B23; B23Q; B23Q9/00; B23Q9/0014; B23Q9/0028; B23C; B23C3/00; B23C3/12; B23C3/126; B24; B24B; B24B23/00; B24B23/08; B24B9/00; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/306216; Y10T409/306384; Y10T409/306496
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
371 words
A hand operable power tool especially adapted for finish trimming an edge portion of a structure, such as that formed by the juncture of two surface sheets on a substrate, which sheets lie in different planes and meet at a juncture line, as for example, two laminated plastic sheets joined to top and side surfaces of a counter top, said tool comprising: a. a main housing having forward, rear, top and bottom portions, said housing having a longitudinal axis, b. a mounting base attached to said housing and comprising a first guide foot providing a first contact surface adapted to engage one of said surface sheets, and a second guide foot providing a second contact surface adapted to engage the other of the surface sheets, thereby orienting said housing with respect to said edge portion, while permitting travel along said edge portion, c. said mounting base further comprising longitudinally oriented pivot means permitting angular adjustment of said housing about said guide feet along a generally longitudinal axis, whereby the angle of engagement of said tool with said edge portion can be varied, and said pivot means is at a location proximate a juncture line of planes defined by the contact surfaces of said first and second guide feet, whereby said working assembly remains in proper position for engagement with said edge portion when the angular position of said tool is adjusted about said axis, and d. a working assembly comprising a right angle power transmission housing comprising a first longitudinal housing portion and a second transmission housing portion depending from the forward end of the longitudinal transmission housing portion and carrying a working shaft adapted to hold a trimming head at the lower end thereof, the lower end of the shaft being positioned forwardly of said main housing and said mounting base, so that a trimming head on said shaft can operate forwardly of said main housing and said mounting base, whereby said tool can be oriented by said guide feet into working engagement with said edge portion and moved forwardly into a limited access area, such as a blind corner, with said working assembly being able to perform a finishing operation on the edge portion in said limited access area.
Claim 2
Dependent Claim
371 words
A hand operable power tool especially adapted for finish trimming an edge portion of a structure, such as that formed by the juncture of two surface sheets on a substrate, which sheets lie in different planes and meet at a juncture line, as for example, two laminated plastic sheets joined to top and side surfaces of a counter top, said tool comprising: a. a main housing having forward, rear, top and bottom portions, said housing having a longitudinal axis, b. a mounting base attached to said housing and comprising a first guide foot providing a first contact surface adapted to engage one of said surface sheets, and a second guide foot providing a second contact surface adapted to engage the other of the surface sheets, thereby orienting said housing with respect to said edge portion, while permitting travel along said edge portion, c. said mounting base further comprising longitudinally oriented pivot means permitting angular adjustment of said housing about said guide feet along a generally longitudinal axis, whereby the angle of engagement of said tool with said edge portion can be varied, and said pivot means is at a location proximate a juncture line of planes defined by the contact surfaces of said first and second guide feet, whereby said working assembly remains in proper position for engagement with said edge portion when the angular position of said tool is adjusted about said axis, and d. a working assembly comprising a right angle power transmission housing comprising a first longitudinal housing portion and a second transmission housing portion depending from the forward end of the longitudinal transmission housing portion and carrying a working shaft adapted to hold a trimming head at the lower end thereof, the lower end of the shaft being positioned forwardly of said main housing and said mounting base, so that a trimming head on said shaft can operate forwardly of said main housing and said mounting base, whereby said tool can be oriented by said guide feet into working engagement with said edge portion and moved forwardly into a limited access area, such as a blind corner, with said working assembly being able to perform a finishing operation on the edge portion in said limited access area.
Claim 3
Dependent Claim
72 words
The tool as recited in claim 1, wherein there is a forwardly extending stop member positioned forwardly of said working assembly, above the lower end of said working shaft whereby forward limit of travel of said tool can be provided in a limited access area by said stop member engaging an upright wall, while allowing a trimming head on the lower end of the working shaft to operate up to said wall.
Claim 4
Dependent Claim
70 words
a third leg means attaching to said first two leg means at a predetermined pivot location and also attached to said housing, with the pivot location of the first and second leg assemblies defining a longitudinal axis about which said tool can be angularly adjusted, said axis being at a location proximate a juncture line of planes defined by the contact surfaces of said first and second guide feet, and
Claim 5
Dependent Claim
70 words
a third leg means attaching to said first two leg means at a predetermined pivot location and also attached to said housing, with the pivot location of the first and second leg assemblies defining a longitudinal axis about which said tool can be angularly adjusted, said axis being at a location proximate a juncture line of planes defined by the contact surfaces of said first and second guide feet, and
Claim 6
Dependent Claim
22 words
one of said mounting assemblies being vertically adjustable with respect to said main housing, whereby said working assembly can be adjusted vertically.
Claim 7
Dependent Claim
22 words
one of said mounting assemblies being vertically adjustable with respect to said main housing, whereby said working assembly can be adjusted vertically.
Claim 8
Dependent Claim
43 words
The assembly as recited in claim 1, wherein said guide feet are adjustably mounted with respect to one another, whereby the angle of said two contact surfaces can be varied so as to come in proper engagement with surface sheets of varying angles.
Claim 9
Dependent Claim
289 words
A hand operable power tool especially adapted for finish trimming an edge portion of a structure, such as that formed by the juncture of two surface sheets on a substrate, which sheets lie in different planes and meet aT a juncture line, as for example, two laminated plastic sheets joined to top and side surfaces of a counter top, said tool comprising: a. a main housing having forward, rear, top and bottom portions, said housing having a longitudinal axis, b. a mounting base attached to said housing and comprising a first guide foot providing a first contact surface adapted to engage one of said surface sheets, and a second guide foot providing a second contact surface adapted to engage the other of the surface sheets, thereby orienting said housing with respect to said edge portion, while permitting travel along said edge portion, said guide foot further comprising longitudinally oriented pivot means permitting angular adjustment of said housing about said guide feet along a generally longitudinal axis, whereby the angle of engagement of said tool with said edge portion can be varied, and forward and rear mounting assemblies, one of said mounting assemblies being vertically adjustable, thereby permitting adjustment of the vertical orientation of said working assembly, and c. a working assembly mounted to the forward portion of said housing and comprising a forwardly disposed downwardly extending working shaft adapted to hold a trimming head at the lower end thereof, whereby said tool can be oriented by said guide feet into working engagement with said edge portion and moved forwardly into a limited access area, such as a blind corner, with said working assembly being able to perform a finishing operation on the edge portion in said limited access area.
Claim 10
Dependent Claim
289 words
A hand operable power tool especially adapted for finish trimming an edge portion of a structure, such as that formed by the juncture of two surface sheets on a substrate, which sheets lie in different planes and meet aT a juncture line, as for example, two laminated plastic sheets joined to top and side surfaces of a counter top, said tool comprising: a. a main housing having forward, rear, top and bottom portions, said housing having a longitudinal axis, b. a mounting base attached to said housing and comprising a first guide foot providing a first contact surface adapted to engage one of said surface sheets, and a second guide foot providing a second contact surface adapted to engage the other of the surface sheets, thereby orienting said housing with respect to said edge portion, while permitting travel along said edge portion, said guide foot further comprising longitudinally oriented pivot means permitting angular adjustment of said housing about said guide feet along a generally longitudinal axis, whereby the angle of engagement of said tool with said edge portion can be varied, and forward and rear mounting assemblies, one of said mounting assemblies being vertically adjustable, thereby permitting adjustment of the vertical orientation of said working assembly, and c. a working assembly mounted to the forward portion of said housing and comprising a forwardly disposed downwardly extending working shaft adapted to hold a trimming head at the lower end thereof, whereby said tool can be oriented by said guide feet into working engagement with said edge portion and moved forwardly into a limited access area, such as a blind corner, with said working assembly being able to perform a finishing operation on the edge portion in said limited access area.
Claim 11
Dependent Claim
317 words
A hand operable power tool especially adapted for finish trimming an edge portion of a structure, such as that formed by the juncture of two surface sheets on a substrate, which sheets lie in different planes and meet at a juncture line, as for example, two laminated plastic sheets joined to top and side surfaces of a counter top, said tool comprising: a. a main housing having forward, rear, top and bottom portions, said housing having a longitudinal axis, b. a mounting base attached to said housing and comprising a first guide foot providing a first contact surface adapted to engage one of said surface sheets, and a second guide foot providing a second contact surface adapted to engage the other of the surface sheets, thereby orienting said housing with respect to said edge portion, while permitting travel along said edge portion, said guide foot further comprising longitudinally oriented pivot means permitting angular adjustment of said housing about said guide feet along a generally longitudinal axis, whereby the angle of engagement of said tool with said edge portion can be varied, and forward and rear mounting assemblies, each of said mounting assemblies comprising two leg means attached one to each guide plate, and a third leg means attaching to said first two leg means and to said housing, the three leg means of each mounting assembly being angularly adjustable with respect to each other, and c. a working assembly mounted to the forward portion of said housing and comprising a forwardly disposed downwardly extending working shaft adapted to hold a trimming head at the lower end thereof, whereby said tool can be oriented by said guide feet into working engagement with said edge portion and moved forwardly into a limited access area, such as a blind corner, with said working assembly being able to perform a finishing operation on the edge portion in said limited access area.
Claim 12
Dependent Claim
317 words
A hand operable power tool especially adapted for finish trimming an edge portion of a structure, such as that formed by the juncture of two surface sheets on a substrate, which sheets lie in different planes and meet at a juncture line, as for example, two laminated plastic sheets joined to top and side surfaces of a counter top, said tool comprising: a. a main housing having forward, rear, top and bottom portions, said housing having a longitudinal axis, b. a mounting base attached to said housing and comprising a first guide foot providing a first contact surface adapted to engage one of said surface sheets, and a second guide foot providing a second contact surface adapted to engage the other of the surface sheets, thereby orienting said housing with respect to said edge portion, while permitting travel along said edge portion, said guide foot further comprising longitudinally oriented pivot means permitting angular adjustment of said housing about said guide feet along a generally longitudinal axis, whereby the angle of engagement of said tool with said edge portion can be varied, and forward and rear mounting assemblies, each of said mounting assemblies comprising two leg means attached one to each guide plate, and a third leg means attaching to said first two leg means and to said housing, the three leg means of each mounting assembly being angularly adjustable with respect to each other, and c. a working assembly mounted to the forward portion of said housing and comprising a forwardly disposed downwardly extending working shaft adapted to hold a trimming head at the lower end thereof, whereby said tool can be oriented by said guide feet into working engagement with said edge portion and moved forwardly into a limited access area, such as a blind corner, with said working assembly being able to perform a finishing operation on the edge portion in said limited access area.
Claim 13
Dependent Claim
31 words
The tool as recited in claim 5, wherein one of said mounting assemblies is also vertically adjustable with respect to said housing, whereby vertical orientation of said working assembly is permitted.
Claim 14
Dependent Claim
43 words
The tool as recited in claim 5, wherein said housing is further angularly adjustable about a longitudinally aligned axis spaced upwardly from the longitudinally oriented pivot means, whereby alignment of said working assembly can be further adjusted with respect to said edge portion.
Claim 15
Dependent Claim
288 words
A hand operable power Tool especially adapted for finish trimming an edge portion of a structure, such as that formed by the juncture of two surface sheets on a substrate, which sheets lie in different planes and meet at a juncture line, as for example, two laminated plastic sheets joined to top and side surfaces of a counter top, said tool comprising: a. a main housing having forward, rear, top and bottom portions, said housing having a longitudinal axis, b. a mounting base attached to said housing and comprising a first guide foot providing a first contact surface adapted to engage one of said surface sheets, and a second guide foot providing a second contact surface adapted to engage the other of the surface sheets, thereby orienting said housing with respect to said edge portion, while permitting travel along said edge portion, and c. a working assembly mounted to the forward portion of said housing and comprising a forwardly disposed downwardly extending working shaft adapted to hold a trimming head at the lower end thereof, whereby said tool can be oriented by said guide feet into working engagement with said edge portion and moved forwardly into a limited access area, such as a blind corner, with said working assembly being able to perform a finishing operation on the edge portion in said limited access area, said tool being further characterized in that: d. said working assembly comprises a right angle power transmission housing comprising a first longitudinal transmission housing portion and a second transmission housing portion depending from the forward end of the longitudinal transmission housing portion and carrying said working shaft, e. said mounting base comprising forward and rear mounting assemblies, each of said mounting assemblies comprising:
Claim 16
Dependent Claim
288 words
A hand operable power Tool especially adapted for finish trimming an edge portion of a structure, such as that formed by the juncture of two surface sheets on a substrate, which sheets lie in different planes and meet at a juncture line, as for example, two laminated plastic sheets joined to top and side surfaces of a counter top, said tool comprising: a. a main housing having forward, rear, top and bottom portions, said housing having a longitudinal axis, b. a mounting base attached to said housing and comprising a first guide foot providing a first contact surface adapted to engage one of said surface sheets, and a second guide foot providing a second contact surface adapted to engage the other of the surface sheets, thereby orienting said housing with respect to said edge portion, while permitting travel along said edge portion, and c. a working assembly mounted to the forward portion of said housing and comprising a forwardly disposed downwardly extending working shaft adapted to hold a trimming head at the lower end thereof, whereby said tool can be oriented by said guide feet into working engagement with said edge portion and moved forwardly into a limited access area, such as a blind corner, with said working assembly being able to perform a finishing operation on the edge portion in said limited access area, said tool being further characterized in that: d. said working assembly comprises a right angle power transmission housing comprising a first longitudinal transmission housing portion and a second transmission housing portion depending from the forward end of the longitudinal transmission housing portion and carrying said working shaft, e. said mounting base comprising forward and rear mounting assemblies, each of said mounting assemblies comprising:
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |