Abstract Material is removed from opposite sides of a substrate while protecting intermediate surfaces thereof by employing a pair of wheels biased toward each other to establish peripherial contact. Each of the wheels has a urethane tire bonded thereto and is mounted for rotation in opposite directions to one another. The substrate is engaged between the urethane tires to mask the intermediate surfaces and as the wheels are rotated the substrate is displaced relative to streams of air abrasive particles eminating from each one of a pair of nozzles mounted on either side of the wheels. Material from the opposite sides is removed by the abrasive action of the air abrasive particles while the intermediate sides thereof are protected against the abrasive action by the urethane tires masking the intermediate surfaces.
Inventors
👤 A Matthews
👤 R Terry
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-30 02:33
CPC Classifications
B; B24; B24C; B24C3/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
An apparatus for removing material from a selected side of an article without removing material from two sides of the article directly adjacent the selected side, comprising: a nozzle; means for forcing abrasive particles under air pressure through the nozzle; means for displacing the selected side of the article relative to the nozzle and for masking the two sides of the article directly adjacent the selected side to protect the adjacent sides of the article from the abrasive particles.
Claim 2
Independent Claim
79 words
An apparatus for removing material from a selected side of an article without removing material from two sides of the article directly adjacent the selected side, comprising: a nozzle; means for forcing abrasive particles under air pressure through the nozzle; means for displacing the selected side of the article relative to the nozzle and for masking the two sides of the article directly adjacent the selected side to protect the adjacent sides of the article from the abrasive particles.
Claim 3
Independent Claim
101 words
An apparatus for removing material from selected sides of an article without removing material from two sides directly adjacent each of the selected sides, comprising: a nozzle; means for forcing abrasive particles under air pressure through the nozzle; a pair of circular disks for engaging the two sides of the article directly adjacent each of the selected sides to mask the adjacent sides of the article from the abrasive particles, at least one of said disks being biased towards the other disk; and means for rotating the disk to advance the article therebetween while masking the adjacent sides of the article.
Claim 4
Independent Claim
101 words
An apparatus for removing material from selected sides of an article without removing material from two sides directly adjacent each of the selected sides, comprising: a nozzle; means for forcing abrasive particles under air pressure through the nozzle; a pair of circular disks for engaging the two sides of the article directly adjacent each of the selected sides to mask the adjacent sides of the article from the abrasive particles, at least one of said disks being biased towards the other disk; and means for rotating the disk to advance the article therebetween while masking the adjacent sides of the article.
Claim 5
Dependent Claim
24 words
The apparatus as set forth in claim 2 wherein said engaging means includes a tire of resilient material mounted on each of said disks.