# US 5,699,580 A · Adjustable trowel and method of producing

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- Number: US 5,699,580 A
- Document ID: US5699580A
- Status: Granted
- Kind: A
- Application number: 08/572,445
- Filed: 1995-12-14
- Granted: 1997-12-23
- Earliest claimed: 1995-12-14
- Inventors: Mike Silverstein
- Web page: https://patentgrep.com/patent/US5699580A

## CPC

- E04F 21/06: Implements for applying plaster, insulating material, or the like {(finishing E04F21/16)}
- E04F 21/163: {with exchangeable blades}
- E04F 21/1655: {for finishing corner joints}
- Y10T 29/4984: Retaining clearance for motion between assembled parts
- Y10T 29/49948: Multipart cooperating fastener [e.g., bolt and nut]
- E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An adjustable trowel which is suitable for both internal and external abutting comers is provided. The trowel includes first and second blade members, each having a plurality of arcuate slots formed therein and a blade angle between the sides of the blade members; and a handle member cooperating with the arcuate slots for releasably locking the blade members together with a desired angle between the sides of the blade members.

## Claims

### Claim 1

An adjustable trowel, comprising:
a. first and second blade members, each of said blade members having first and second sides defining a blade angle therebetween and having a plurality of arcuate slots therethrough;
b. a handle having a gripping portion and a leg portion; and
c. means for connecting and securing the blade members to the leg portion of the handle, wherein the blade members are movable relative to each other in mutually parallel planes, the connecting means permitting selective releasable locking of said blade members whereby a desired angle between said second side of said first blade member and said second side of said second blade member may be selectively adjusted.

### Claim 2 (depends on 1)

An adjustable trowel according to claim 1 wherein said desired angle is an internal angle.

### Claim 3 (depends on 1)

An adjustable trowel according to claim 1 wherein said desired angle is an external angle.

### Claim 4 (depends on 1)

An adjustable trowel according to claim 1 wherein said desired angle is 180.degree..

### Claim 5 (depends on 1)

An adjustable trowel according to claim 1 and wherein said connecting and securing means comprises:
a. a plurality of threaded bolts dimensioned to pass through said arcuate slots in said first and second blade members when aligned; and
b. a plurality of nuts adapted to be screwed onto said threaded bolts for affixing said first and second blade members to said leg portion.

### Claim 6 (depends on 1)

An adjustable trowel according to claim 1 wherein each of said first blade member and said second blade member further comprise a third side and are generally triangular in shape.

### Claim 7 (depends on 1)

An adjustable trowel according to claim 1 wherein said first blade member and said second blade member have an isosceles triangular shape.

### Claim 8 (depends on 1)

An adjustable trowel according to claim 1 wherein said blade angle is a right angle.

### Claim 9

An adjustable trowel comprising:
an interchangeable blade member having a plurality of arcuate slots formed therein;
a. a handle having a gripping portion and a leg portion; and
b. connecting and securing means for securing the blade member to the leg portion of the handle, wherein the blade member is movable relative to the leg portion in a parallel plane permitting selective releasable locking of said interchangeable blade member to said leg portion; and wherein said connecting and securing means comprises:
i. a plurality of threaded bolts dimensioned to pass through said arcuate slots in said blade member when aligned; and
ii. a plurality of nuts adapted to be screwed onto said threaded bolts for affixing said blade member to said leg portion.

### Claim 10

A method for producing an adjustable trowel comprising the steps of:
a. connecting a first blade member to a second blade member, each of said first blade member and said second blade member having first and second sides defining a blade angle therebetween and having a plurality of arcuate slots therethrough; and
b. securing the blade members to a leg portion of a handle by connecting means, said handle also having a gripping portion, wherein the blade members are movable relative to each other in mutually parallel planes said connecting means permitting the selective releasable locking of said first blade member and said second blade member whereby a desired angle between said second side of said first blade member and said second side of said second blade member may be selectively adjusted.