US3643385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable grinding tool
Assignee: Individual
•
Filing: 1969-11-19
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Granted: 1972-02-22
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Expires: 1989-11-19
Abstract
Abstract A portable grinding tool consisting of a handle, a telescopic holder and arm having a rotatable pulley attached to one end. The telescopic holder is adjustably fastened to the handle at variable angles, and a rotatable driving member positioned within the holder is adapted to be driven by suitable power means so as to rotate a grinding belt entrained about and interconnecting the driving member and the rotatable pulley. Pressure plates for the belt and pulleys of various configurations may be interchangeably mounted for the effective and accurate grinding of different surfaces of a wide range of objects.
Inventors
- 👤 Toshio Mikiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:32
CPC Classifications
B; B24; B24B; B24B23/00; B24B23/06
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
135 words
A portable grinding tool comprising; handle means; a holder having a bore therein, said holder including a clamping ring for adjustably fastening said holder to said handle means, a slot extending through said clamping ring, and adjusting means interconnecting the ends of said clamping ring adjacent said slot for alternatively loosening and tightening said clamping ring ends together, such that the angular relationship between said holder and said handle means is adjustable; a projecting arm member positioned within said bore and having one end extending from said holder; driving wheel means rotatably mounted on said holder and adapted to be driven by suitable driving means; a pulley rotatably mounted on the projecting end portion of said arm member; and an endless grinding belt interconnectingly encompassing said driving wheel means and said pulley for rotation therewith.
Claim 2
Dependent Claim
135 words
A portable grinding tool comprising; handle means; a holder having a bore therein, said holder including a clamping ring for adjustably fastening said holder to said handle means, a slot extending through said clamping ring, and adjusting means interconnecting the ends of said clamping ring adjacent said slot for alternatively loosening and tightening said clamping ring ends together, such that the angular relationship between said holder and said handle means is adjustable; a projecting arm member positioned within said bore and having one end extending from said holder; driving wheel means rotatably mounted on said holder and adapted to be driven by suitable driving means; a pulley rotatably mounted on the projecting end portion of said arm member; and an endless grinding belt interconnectingly encompassing said driving wheel means and said pulley for rotation therewith.
Claim 3
Dependent Claim
38 words
A grinding tool as defined in claim 1 wherein said clamping ring includes clamping seats located on both sides of said slot, and wherein said adjusting means interconnects said clamping seats for loosening and tightening said clamping ring.
Claim 4
Dependent Claim
20 words
A grinding tool as defined in claim 1 wherein said handle means includes a portion extending into said clamping ring.
Claim 5
Dependent Claim
27 words
A grinding tool as defined in claim 1 wherein said handle means includes a housing containing drive means therein, said housing being adjustably fastened to said holder.
Claim 6
Dependent Claim
31 words
A grinding tool as defined in claim 1 including cooperating ball and detent means in said holder adapted to determine the relative angular position between said holder and said handle means.
Claim 7
Dependent Claim
30 words
A grinding tool as defined in claim 5 wherein said handle means includes detents formed therein and wherein said holder includes spring-biased ball means therein which cooperate with said detents.
Claim 8
Dependent Claim
33 words
A grinding tool as defined in claim 1 including a pulley support means adjustably coupled to the free end of said projecting arm, said pulley beinG rotatably mounted on said pulley support means.
Claim 9
Dependent Claim
42 words
A grinding tool as defined in claim 7 wherein said pulley support means includes a bore therein adapted to receive the free end of said projecting arm, the diameter of said bore being larger than the outer diameter of said projecting arm.
Claim 10
Dependent Claim
38 words
A grinding tool as defined in claim 8 wherein said pulley support means includes a pin adapted to pass through holes in said pulley support means and through a hole in the free end of said projecting arm.
Claim 11
Dependent Claim
40 words
A grinding tool as defined in claim 9 further comprising a pair of setscrews threadably inserted in the walls of said pulley support means for fixedly securing said pulley support means to the free end of said projecting arm member.
Claim 12
Dependent Claim
57 words
A grinding tool as defined in claim 10 wherein said projecting arm and said pulley support means are movable with respect to each other along the longitudinal axis of said pin, said setscrews fixedly securing said projecting arm and said support means relative to each other at a predetermined point along the longitudinal axis of said pin.
Claim 13
Dependent Claim
47 words
A grinding tool as defined in claim 11 wherein said projecting arm and said pulley support means are movable with respect to each other about the longitudinal axis of said pin, said setscrews fixedly securing said projecting arm and said support means at a predetermined relative position.
Claim 14
Dependent Claim
33 words
A grinding tool as defined in claim 1 including pressure plate means fastened to said holder, said pressure plate means being adapted to contact portions of said grinding belt to support said belt.
Claim 15
Dependent Claim
37 words
A grinding tool as defined in claim 13 wherein said pressure plate means comprise contact shoe surface means engaging the inner surface of portions of the grinding belt run between said driving wheel means and said pulley.
Claim 16
Dependent Claim
19 words
A grinding tool as defined in claim 13 wherein said pressure plate means are removably mounted on said holder.
Claim 17
Dependent Claim
50 words
A grinding tool as defined in claim 15 including a projection on said pressure plate means, complementary recess means on said holder adapted to receive said projection, and fastener means projecting through aligned apertures in said projection and holder recess means for mounting said pressure plate means on said holder.
Claim 18
Dependent Claim
42 words
A grinding tool as defined in claim 1 including a generally L-shaped bracket means fastened to the free end of said projecting arm member, cantilever shaft means projecting from said bracket means, and said pulley being rotatably mounted on said shaft means.
Claim 19
Dependent Claim
26 words
A grinding tool as defined in claim 17 wherein said pulley is detachably mounted on said shaft means so as to be interchangeable with other pulleys.
Claim 20
Dependent Claim
28 words
A grinding tool as defined in claim 1 wherein said pulley is detachably mounted on said projecting arm end portion so as to be interchangeable with other pulleys.
Claim 21
Dependent Claim
129 words
A portable grinding tool comprising: handle means; a holder attached to one end of said handle means, said holder having a bore therein; a projecting arm member positioned within said bore and having one end extending from said holder; driving wheel means rotatably mounted on said holder and adapted to be driven by suitable power means; a pulley support means adjustably coupled to the free end of said projecting arm, said pulley support means including a bore therein adapted to receive the free end of said projecting arm, the diameter of said bore being larger than the outer diameter of said projecting arm; a pulley rotatably mounted on said pulley support means; and an endless grinding belt interconnectingly encompassing said driving wheel means and said pulley for rotation therewith.
Claim 22
Dependent Claim
129 words
A portable grinding tool comprising: handle means; a holder attached to one end of said handle means, said holder having a bore therein; a projecting arm member positioned within said bore and having one end extending from said holder; driving wheel means rotatably mounted on said holder and adapted to be driven by suitable power means; a pulley support means adjustably coupled to the free end of said projecting arm, said pulley support means including a bore therein adapted to receive the free end of said projecting arm, the diameter of said bore being larger than the outer diameter of said projecting arm; a pulley rotatably mounted on said pulley support means; and an endless grinding belt interconnectingly encompassing said driving wheel means and said pulley for rotation therewith.
Claim 23
Dependent Claim
38 words
A grinding tool as defined in claim 20 wherein said pulley support means includes a pin adapted to pass through holes in said pulley support means and through a hole in the free end of said projecting arm.
Claim 24
Dependent Claim
40 words
A grinding tool as defined in claim 21 further comprising a pair of setscrews threadably inserted in the walls of said puLley support means for fixedly securing said pulley support means to the free end of said projecting arm member.
Claim 25
Dependent Claim
57 words
A grinding tool as defined in claim 22 wherein said projecting arm and said pulley support means are movable with respect to each other along the longitudinal axis of said pin, said setscrews fixedly securing said projecting arm and said support means relative to each other at a predetermined point along the longitudinal axis of said pin.
Claim 26
Dependent Claim
47 words
A grinding tool as defined in claim 23 wherein said projecting arm and said pulley support means are movable with respect to each other about the longitudinal axis of said pin, said setscrews fixedly securing said projecting arm and said support means at a predetermined relative position.
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |