US3638464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shot peening
Assignee: 3M Co
•
Filing: 1968-07-22
•
Granted: 1972-02-01
•
Expires: 1988-07-22
Abstract
Abstract A rotary wheel, in which spheroidal peening particles are affixed to radially extending circumferentially spaced flaps of fibrous sheet material, is used to impart compressive stress to, or aid in shaping, metallic substrates.
Inventors
- 👤 Phillip M Winter
- 👤 Gary A Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:06
CPC Classifications
B; B24; B24D; B24D11/00; B24D13/00; B24D13/02; B24D13/06; Y; Y10; Y10T; Y10T428/00; Y10T428/22; Y10T428/25
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
A unitary self-contained portable rotary peening device comprising in combination an annulus of radially extending peripherally separated flaps united at their radially inner ends to a rigid core, each of said flaps comprising a flexible, tough, tear-resistant fibrous support member having firmly adherently bonded thereto at spaced portions thereof particles consisting at least predominantly of substantially spheroidal relatively smooth inorganic impact-resistant peening particles having an average diameter in the range of 0.1-2.5 mm., said particles being present in an amount falling in the range of about 25 to about 1,000 cc./m.2 of usable flap area, said particles being surrounded to more than half their effective diameter by and bonded to fibers of said flaps by a tough, strong fiber-adherent particle-adherent organic adhesive having an ultimate elongation on the order of at least 100
Claim 2
Dependent Claim
133 words
A unitary self-contained portable rotary peening device comprising in combination an annulus of radially extending peripherally separated flaps united at their radially inner ends to a rigid core, each of said flaps comprising a flexible, tough, tear-resistant fibrous support member having firmly adherently bonded thereto at spaced portions thereof particles consisting at least predominantly of substantially spheroidal relatively smooth inorganic impact-resistant peening particles having an average diameter in the range of 0.1-2.5 mm., said particles being present in an amount falling in the range of about 25 to about 1,000 cc./m.2 of usable flap area, said particles being surrounded to more than half their effective diameter by and bonded to fibers of said flaps by a tough, strong fiber-adherent particle-adherent organic adhesive having an ultimate elongation on the order of at least 100
Claim 3
Dependent Claim
41 words
The device of claim 1 wheRein the flaps are so positioned that their separation at the periphery is based on the greater of (a) at least 1/2 inch or (b) an angular spacing between circumferentially adjacent flaps of at least 10*.
Claim 4
Dependent Claim
46 words
The device of claim 1 wherein the flaps consist essentially of adhesively bonded nonwoven lofty open fibrous sheet material throughout which the peening particles are distributed, the fibers comprising said sheet material being tough, strong, crimped and having a diameter on the order of 40-200 microns.
Claim 5
Dependent Claim
30 words
The device of claim 1 wherein the flaps consist essentially of sheet material woven from tough strong yarns, the peening particle being bonded to one face of said sheet material.
Claim 6
Dependent Claim
15 words
The device of claim 4 wherein the sheet material is an open mesh nylon fabric.
Claim 7
Dependent Claim
21 words
The device of claim 4 wherein the opposite face of the woven sheet material is laminated to a nonwoven sheet material.
Claim 8
Dependent Claim
40 words
The device of claim 1 wherein nonspherical relatively sharp abrasive particles are blended with the peening particles, whereby the device acquires utility for removing stock from a metallic substrate while still imparting compressive stress to the surface of said substrate.
Claim 9
Dependent Claim
88 words
A novel method of peening a metallic substrate while avoiding the customary requirements of elaborate machinery for confining and recycling peening particles, comprising rigidly mounting on a rotary driving means a peening device having flaps carrying impact-resistant peening particles, rotating said device by means of said driving means, and forcing the periphery of said device against a substrate in a manner which causes the flaps to deform across their width so that a substantial radially outward portion of the face of each flap strikes the substrate in turn.
Claim 10
Dependent Claim
88 words
A novel method of peening a metallic substrate while avoiding the customary requirements of elaborate machinery for confining and recycling peening particles, comprising rigidly mounting on a rotary driving means a peening device having flaps carrying impact-resistant peening particles, rotating said device by means of said driving means, and forcing the periphery of said device against a substrate in a manner which causes the flaps to deform across their width so that a substantial radially outward portion of the face of each flap strikes the substrate in turn.
References Cited (Backward Citations)
US2201195A
Cited
US2758362A
Cited
US2913857A
Cited
US2982007A
Cited
US3212219A
Cited
US3462888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |