Patent US5451020A successfully refreshed from Google Patents.
US5451020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrist rest
Assignee: Acco Brands USA LLC
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Filing: 1994-06-01
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Granted: 1995-09-19
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Expires: 2014-06-01
Abstract
Abstract A wrist rest (1) of specially designed height and other characteristics is provided for reducing strain on the wrists and hands of a keyboard operator or a similar user of computer accessories. The rest (1) is made to be placed in front of the keyboard or accessory being used, and may be designed to have a particular firmness for comfort. In some embodiments the rest has two foam rubber layers (20, 30) about 3/4 inch thick total; the bottom surface has no "skin", to prevent the rest from slipping, while the upper surface has a smooth covering (10) so hands may slide around easily and comfortably. In order to allow rests designed for a normal keyboard to be adapted for use with an especially long keyboard, or with an accessory like a mousepad (4), one embodiment (3) of the invention has contours (101) which can interlock with similar contours (100) on an extension pad (2); these contours are also designed to be easily and inexpensively manufactured.
Inventors
- 👤 Mark R. Smith
- 👤 Philip G. Wessells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:55
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/039; G06F3/0395; A; A47; A47B; A47B21/00; A47B21/03; A47B21/0371; A47C; A47C16/00; A47B2200/00; A47B2200/0084; A47B2200/009
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
120 words
A wrist rest having a length, depth, and thickness, comprising a) a substantially rectangular support layer comprising an open or closed cell foam rubber, said support layer further comprising a top surface and a planar bottom surface; and b) a substantially rectangular low friction surface layer bonded to the support layer, said low friction layer comprising a bottom surface and planar top surface, wherein said top surface of said support layer is bonded to said bottom surface of said low friction layer, and wherein said planar top surface of said low friction surface layer is substantially parallel with said planar bottom surface of said support layer; wherein the thickness of the wrist rest is about from 1/2 to 1 inches.
Claim 2
Dependent Claim
120 words
A wrist rest having a length, depth, and thickness, comprising a) a substantially rectangular support layer comprising an open or closed cell foam rubber, said support layer further comprising a top surface and a planar bottom surface; and b) a substantially rectangular low friction surface layer bonded to the support layer, said low friction layer comprising a bottom surface and planar top surface, wherein said top surface of said support layer is bonded to said bottom surface of said low friction layer, and wherein said planar top surface of said low friction surface layer is substantially parallel with said planar bottom surface of said support layer; wherein the thickness of the wrist rest is about from 1/2 to 1 inches.
Claim 3
Dependent Claim
13 words
The wrist rest of claim 1, wherein the thickness is about 3/4 inches.
Claim 4
Dependent Claim
32 words
The wrist rest of claim 2, further comprising an anchor plate which may be placed under a keyboard so as to hold the wrist rest in place in front of the keyboard.
Claim 5
Dependent Claim
22 words
The wrist rest of claim 1, further comprising an interlocking contour by means of which it is attachable to an extension pad.
Claim 6
Dependent Claim
22 words
The wrist rest of claim 4, wherein the interlocking contour is shaped by three arc segments from circles of the same radius.
Claim 7
Dependent Claim
38 words
The wrist rest of claim 2, further comprising a base layer bonded to the support layer and having a first compression deflection pressure, wherein the support layer is made of foam rubber having a second compression deflection pressure.
Claim 8
Dependent Claim
12 words
The wrist rest of claim 1, wherein the foam rubber comprises neoprene.
Claim 9
Dependent Claim
26 words
The wrist rest as claimed in claim 6, wherein the support layer has a compression deflection pressure of about 2 to 5 pounds per square inch.
Claim 10
Dependent Claim
26 words
The wrist rest as claimed in claim 6, wherein the base layer has a compression deflection pressure of about 5 to 9 pounds per square inch.
Claim 11
Dependent Claim
14 words
The wrist rest as claimed in claim 9, wherein the base layer comprises neoprene.
Claim 12
Dependent Claim
14 words
The wrist rest as claimed in claim 8, wherein the support layer comprises neoprene.
Claim 13
Dependent Claim
72 words
A wrist rest having a length, a depth, and a height, comprising: a substantially rectangular support layer comprising an open or closed cell foam rubber, said support layer further comprising a top low friction planar surface and a bottom planar surface, wherein said top planar surface and said bottom planar surface are substantially parallel; and wherein the thickness of the wrist rest is in the range from about 1/2 to 1 inches.
Claim 14
Dependent Claim
72 words
A wrist rest having a length, a depth, and a height, comprising: a substantially rectangular support layer comprising an open or closed cell foam rubber, said support layer further comprising a top low friction planar surface and a bottom planar surface, wherein said top planar surface and said bottom planar surface are substantially parallel; and wherein the thickness of the wrist rest is in the range from about 1/2 to 1 inches.
Claim 15
Dependent Claim
69 words
A wrist rest having a length, a depth, and a height, comprising: a substantially rectangular support layer comprising a top low friction planar surface and a bottom planar surface, wherein said top planar surface and said bottom planar surface are substantially parallel, wherein the support layer further includes an interlocking contour; and wherein the thickness of the wrist rest is in the range from about 1/2 to 1 inches.
Claim 16
Dependent Claim
69 words
A wrist rest having a length, a depth, and a height, comprising: a substantially rectangular support layer comprising a top low friction planar surface and a bottom planar surface, wherein said top planar surface and said bottom planar surface are substantially parallel, wherein the support layer further includes an interlocking contour; and wherein the thickness of the wrist rest is in the range from about 1/2 to 1 inches.
Claim 17
Dependent Claim
115 words
A wrist rest having a length, depth, and thickness, comprising a) a substantially rectangular support layer comprising foam rubber, said support layer further comprising a top surface and a planar bottom surface; and b) a substantially rectangular low friction surface layer bonded to the support layer, said low friction layer comprising a bottom surface and planar top surface, wherein said top surface of said support layer is bonded to said bottom surface of said low friction layer, and wherein said planar top surface of said low friction surface layer is substantially parallel with said planar bottom surface of said support layer; wherein the thickness of the wrist rest is about from 1/2 to 1 inches.
Claim 18
Dependent Claim
115 words
A wrist rest having a length, depth, and thickness, comprising a) a substantially rectangular support layer comprising foam rubber, said support layer further comprising a top surface and a planar bottom surface; and b) a substantially rectangular low friction surface layer bonded to the support layer, said low friction layer comprising a bottom surface and planar top surface, wherein said top surface of said support layer is bonded to said bottom surface of said low friction layer, and wherein said planar top surface of said low friction surface layer is substantially parallel with said planar bottom surface of said support layer; wherein the thickness of the wrist rest is about from 1/2 to 1 inches.
Claim 19
Dependent Claim
16 words
The wrist rest of claim 14, wherein the foam rubber comprises an open cell foam rubber.
Claim 20
Dependent Claim
16 words
The wrist rest of claim 14, wherein the foam rubber comprises a closed cell foam rubber.
Claim 21
Dependent Claim
17 words
The wrist rest of claim 14, wherein the thickness of the wrist rest is about 3/4 inches.
Claim 22
Dependent Claim
67 words
A wrist rest having a length, a depth, and a height, comprising: a substantially rectangular support layer comprising foam rubber, said support layer further comprising a top low friction planar surface and a bottom planar surface, wherein said top planar surface and said bottom planar surface are substantially parallel; and wherein the thickness of the wrist rest is in the range from about 1/2 to 1 inches.
Claim 23
Dependent Claim
67 words
A wrist rest having a length, a depth, and a height, comprising: a substantially rectangular support layer comprising foam rubber, said support layer further comprising a top low friction planar surface and a bottom planar surface, wherein said top planar surface and said bottom planar surface are substantially parallel; and wherein the thickness of the wrist rest is in the range from about 1/2 to 1 inches.
Claim 24
Dependent Claim
16 words
The wrist rest of claim 18, wherein the foam rubber comprises an open cell foam rubber.
Claim 25
Dependent Claim
16 words
The wrist rest of claim 18, wherein the foam rubber comprises a closed cell foam rubber.
Claim 26
Dependent Claim
17 words
The wrist rest of claim 18, wherein the thickness of the wrist rest is about 3/4 inches.
Claim 27
Dependent Claim
89 words
A wrist rest having a length, depth, and thickness, comprising: (a) a support layer; (b) a low friction surface layer bonded to the support layer; and (c) a base layer bonded to the support layer and having a first compression deflection pressure of between 5 to 9 pounds per square inch, wherein the support layer is made of foam rubber having a second compression deflection pressure of between 2 to 5 pounds per square inch, wherein the thickness of the wrist rest is about from 1/2 to 1 inches.
Claim 28
Dependent Claim
89 words
A wrist rest having a length, depth, and thickness, comprising: (a) a support layer; (b) a low friction surface layer bonded to the support layer; and (c) a base layer bonded to the support layer and having a first compression deflection pressure of between 5 to 9 pounds per square inch, wherein the support layer is made of foam rubber having a second compression deflection pressure of between 2 to 5 pounds per square inch, wherein the thickness of the wrist rest is about from 1/2 to 1 inches.
Claim 29
Dependent Claim
14 words
The wrist rest as claimed in claim 22, wherein the base layer comprises neoprene.
Claim 30
Dependent Claim
14 words
The wrist rest as claimed in claim 22, wherein the support layer comprises neoprene.
Claim 31
Dependent Claim
15 words
The wrist rest of claim 22, wherein the support layer is made of foam rubber.
Claim 32
Dependent Claim
13 words
The wrist rest of claim 22 wherein the thickness is about 3/4 inches.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-18 | 1999-03-20 | 1999-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-18 | 2003-03-20 | 2003-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-18 | 2007-03-20 | 2007-09-19 | $7700.00 | Window Closed / Lapsed |