Chalk and dry marker eraser roller
a technology of erasers and chalk, which is applied in the direction of cleaning machines, cleaning devices, carpet cleaners, etc., can solve the problems of not allowing spot erasing, leaving a significant amount of dust on the front face of the eraser, and a noisy approach to solving this problem, etc., to achieve convenient use, easy to dispose of collected dust, and easy to manufacture
Inactive Publication Date: 2007-10-11
WARNER VALERIE MORNET
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
"The present invention provides a dust-collecting chalk and dry marker board eraser that is inexpensive, convenient, and easy to dispose of collected dust without creating a mess. The technical effects of the invention include improved efficiency in erasing and cleaning of boards, as well as convenient and efficient disposal of collected dust."
Problems solved by technology
This would undoubtedly still leave a significant amount of dust on the front face of the eraser.
This device would only work on boards equipped with the tracks, and erased everything top to bottom, thus not allowing spot erasing.
Obviously, these are somewhat expensive and noisy approaches to solving this problem.
Besides being rather small, these do not address the dust issue.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
, particularly, when such description is taken in conjunction with the attached drawing figures and with the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013]FIG. 1 is a perspective view of the dust-catching eraser.
[0014]FIG. 2 is a horizontal elevation partial cut-away view of the device.
[0015]FIG. 3 is a horizontal elevation partial cut-away view of the eraser with an alternative rotating means.
BRIEF DESCRIPTION OF A PRESENTLY PREFERRED AND ALTERNATIVE EMBODIMENT OF THE INVENTION
[0016]Prior to proceeding to the more detailed description of the present invention, it should be noted that, for the sake of clarity and understanding, identical components which have identical functions have been identified with identical reference numerals throughout the several views illustrated in the drawing figures.
[0017]Referring to FIG. 1, the preferred embodiment of the dust-catching board eraser 10 is shown. The elongated trough-like body 12 has attached, near and perpendicular to its cent...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
| soft flexible | aaaaa | aaaaa |
| flexible | aaaaa | aaaaa |
Login to View More
Abstract
A writing board eraser consisting of a trough-like main body with two substantially flat end panels, a hollow handle integral and perpendicular to a longitudinal side of the main body, a soft flexible erasing pad covering at least half of an oval cylinder surrounding an axel rod connected to a rotating lever, which enables rotating the erasing pad to contact a longitudinal scraping blade attached to the internal concave surface of the trough-like main body thus removing dust which then drops into the hollow handle, which includes a threaded distal end with a mating cap for removal of accumulated dust.
Description
CROSS REFERENCE TO RELATED APPLICATION[0001]This patent application is related to and claims priority from U.S. Provisional Patent Application Ser. No. 60 / 790,221 filed Apr. 7, 2006.FIELD OF THE INVENTION[0002]The present invention relates, in general, to erasers for writing boards and, more particularly, this invention relates to dust-capturing erasers for chalk and dry-marker boards.BACKGROUND OF THE INVENTION[0003]Prior to the conception and development of the present invention, typical chalk board erasers and the like would remove the writing from the board, but the particles and dust created thereby would just drop to a ledge or the floor, and some would invariably get on the writer's hands and clothing.[0004]This problem was addressed to some extent by Yeo in U.S. Pat. No. 618,759, wherein a dust collecting chamber was built into a rather conventional rectangular felt eraser. A sliding door allowed for removal of the dust. Collection of the dust relied on the rubbing action of...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(United States)
IPC IPC(8): A47L13/10
CPCB43L19/0037B43L21/04B43L21/02B43L19/0068
Inventor WARNER, VALERIE MORNET
Owner WARNER VALERIE MORNET