US3955455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring cutting device
Assignee: Individual
•
Filing: 1973-12-10
•
Granted: 1976-05-11
•
Expires: 1993-12-10
Abstract
Abstract A rotatable work holder is used to automate the cutting of rings against fixed blades.
Inventors
- 👤 Jesus Guzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:33
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/01; B26D1/12; B26D1/14; B26D1/157; B26D1/16; B23; B23D; B23D45/00; B23D45/003; B23D47/00; B23D47/04; B23D47/045; B23D47/047; B26D7/00; B26D7/06; B26D7/0683; Y; Y10; Y10T; Y10T29/00; Y10T29/21; Y10T83/00; Y10T83/04; Y10T83/0596; Y10T83/647; Y10T83/654; Y10T83/6542; Y10T83/6545; Y10T83/6547; Y10T83/6548; Y10T83/6555; Y10T83/6558; Y10T83/748; Y10T83/7487; Y10T83/7533; Y10T83/768; Y10T83/7684; Y10T83/7701; Y10T83/7705
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
155 words
A ring cutting device comprising a spaced pair of rotatable cutting blades, means to rotate said cutting blades, said cutting blades each mounted on a moveable platform and moveable a selected equal distance, each said moveable platform including a hinged arm and means attached to said hinged arm adapted to spread and retract said arm to select angles for said cutting blades, a rotatable work holder, means to rotate said rotatable work holder, said rotatable work holder including at least one ring clamp, said at least one ring clamp hinged to said rotatable work holder including at least one ring clamp, said at least one ring clamp hinged to said rotatable work holder and having a first and second part, means to close said first and second ring clamp parts engaging a ring, and said rotatable work holder spaced to rotate said ring in said ring clamp over a selected path by said cutting blades.
Claim 2
Dependent Claim
155 words
A ring cutting device comprising a spaced pair of rotatable cutting blades, means to rotate said cutting blades, said cutting blades each mounted on a moveable platform and moveable a selected equal distance, each said moveable platform including a hinged arm and means attached to said hinged arm adapted to spread and retract said arm to select angles for said cutting blades, a rotatable work holder, means to rotate said rotatable work holder, said rotatable work holder including at least one ring clamp, said at least one ring clamp hinged to said rotatable work holder including at least one ring clamp, said at least one ring clamp hinged to said rotatable work holder and having a first and second part, means to close said first and second ring clamp parts engaging a ring, and said rotatable work holder spaced to rotate said ring in said ring clamp over a selected path by said cutting blades.
Claim 3
Dependent Claim
26 words
The invention of claim 1 wherein said means to spread and retract said arms include a pulley with a drive arm eccentrically mounted on said pulley.
Claim 4
Dependent Claim
14 words
The invention of claim 2 including means to select fixed positions for said pulley.
Claim 5
Dependent Claim
61 words
The invention of claim 3 wherein each said moveable platform is a plate, said plate mounted on a base, said plate extending beyond the edge of said base, a sandwich plate and a spacer about the thickness of said base all joined to said platform beyond the edge of said plate, and said hinged arms are attached to said sandwich plate.
Claim 6
Dependent Claim
19 words
The invention of claim 1 wherein said first and second portions of said ring clamp are normally biased apart.
Claim 7
Dependent Claim
34 words
The invention of claim 5, wherein at least one of said ring clamp portions includes a pair of arms including fingers overriding the ends of said first and second parts of said ring clamp.
Claim 8
Dependent Claim
25 words
The invention of claim 6 wherein said ring clamp portion of said rotatable work holder is rotatable in a chamber in said work holding structure.
Claim 9
Dependent Claim
37 words
The invention of claim 7 wherein said ring clamp structure includes at least one leaf spring on one portion of said ring clamp structure, said leaf spring of greater width than said rotatable work holding structure chamber.
Claim 10
Dependent Claim
42 words
The invention of claim 8 wherein said leaf spring when in said rotatable work holding structure enfolds the ends of said ring clamp arms against the normal bias of said ring clamp arms and is adapted to hold a ring emplaced therein.
Claim 11
Dependent Claim
19 words
The invention of claim 9 wherein at least one of said ring clamp portions further includes a ring holder.
References Cited (Backward Citations)
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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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |