Patent US4578865A successfully refreshed from Google Patents.
US4578865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tile cutting device having parallel blades
Assignee: Individual
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Filing: 1984-05-01
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Granted: 1986-04-01
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Expires: 2004-05-01
Abstract
Abstract A device for forming a rabbet edge on ceiling tile consisting essentially of two blades held in parallel one in a fixed position and the remaining blade being slidable so that it may extend beyond the fixed blade to produce a deeper cut. The unwanted tile is first severed with the extended blade following which the shorter fixed blade is used to make a perpendicular cut and remove an unwanted longitudinal segment. The blades are replacable to provide fresh cutting edges.
Inventors
- 👤 Jeffrey Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:24
CPC Classifications
B; B26; B26B; B26B5/00; B26B5/008
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
184 words
A cutting device having two blades which are used to form a rabbet edge on acoustical tile which comprises: (1) a hollow handle having an interior longitudinal channel with a beveled opening at the front end and a longitudinal slot extending into said channel; (2) a rectangular blade-retaining body having two opposing narrow surfaces and two upwardly extending parallel sidewalls within said channel; (3) two generally U-shaped clips which are adapted to the surfaces and sidewalls of said blade-retaining body, the first clip being in a fixed relationship to said body and the second clip being slidable with respect thereto; (4) two single edge blades mounted in parallel on opposite sides of said blade-retaining body, one blade being mounted in said first clip and thus fixed to said body and he second blade being mounted in said second clip so that it is slidable with respect to said body; (5) means for adjusting said slidable blade to its desired cutting depth comprising a projection which extends upwardly from the second clip through the slot in said handle to be impressed forward by the user.
Claim 2
Dependent Claim
184 words
A cutting device having two blades which are used to form a rabbet edge on acoustical tile which comprises: (1) a hollow handle having an interior longitudinal channel with a beveled opening at the front end and a longitudinal slot extending into said channel; (2) a rectangular blade-retaining body having two opposing narrow surfaces and two upwardly extending parallel sidewalls within said channel; (3) two generally U-shaped clips which are adapted to the surfaces and sidewalls of said blade-retaining body, the first clip being in a fixed relationship to said body and the second clip being slidable with respect thereto; (4) two single edge blades mounted in parallel on opposite sides of said blade-retaining body, one blade being mounted in said first clip and thus fixed to said body and he second blade being mounted in said second clip so that it is slidable with respect to said body; (5) means for adjusting said slidable blade to its desired cutting depth comprising a projection which extends upwardly from the second clip through the slot in said handle to be impressed forward by the user.
Claim 3
Dependent Claim
26 words
The device of claim 1 wherein said first clip is secured to said blade-retaining body by a projection which extends into an orifice in said body.
Claim 4
Dependent Claim
23 words
The device of claim 1 wherein the slidable clip includes a flange which is tracked in a longitudinal channel within said blade-retaining body.
Claim 5
Dependent Claim
17 words
The device of claim 1 wherein said blade-retaining body is secured to said handle by screw means.
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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |