Patent US4324121A successfully refreshed from Google Patents.
US4324121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key ring
Assignee: Individual
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Filing: 1980-01-28
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Granted: 1982-04-13
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Expires: 2000-01-28
Abstract
Abstract A key ring which includes a metal ring with an open segment area for the insertion and removal of keys has the metal ring mounted in a circular guide groove of a handle portion such that the ring is rotatable therein. A latch is slidably disposed in a passage in the handle portion and spring-biased into engagement with the metal ring for locking the metal ring to prevent its rotation. Means are provided for disengaging the latch so as to permit rotation of the metal ring.
Inventors
- 👤 Herbert Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:07
CPC Classifications
A; A44; A44B; A44B15/00; Y; Y10; Y10S; Y10S70/00; Y10S70/55; Y10T; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676; Y10T70/8757
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
182 words
A key ring comprising: a handle portion having a circular passage extending therethrough at least at one end; a metal ring rotatably disposed in said circular passage, said metal ring having an open segment area; a latch member movably supported in said handle portion; said handle portion having a narrow cavity and spring means having interconnected undulated sections arranged in spaced parallel relationship disposed and contained in said cavity for biasing said latch member toward said metal ring and into said open segment area when said open segment area is in the path of movement of said latch member for locking said ring in position; said latch member being movably supported in said handle portion in a passage which intersects, and extends normal to, said circular passage, and said latch member further having a portion extending at least to the surface of said handle portion at least at one side thereof so as to permit movement of said latch member out of engagement with said metal ring in order to allow rotation of the metal ring for removal and insertion of keys.
Claim 2
Dependent Claim
182 words
A key ring comprising: a handle portion having a circular passage extending therethrough at least at one end; a metal ring rotatably disposed in said circular passage, said metal ring having an open segment area; a latch member movably supported in said handle portion; said handle portion having a narrow cavity and spring means having interconnected undulated sections arranged in spaced parallel relationship disposed and contained in said cavity for biasing said latch member toward said metal ring and into said open segment area when said open segment area is in the path of movement of said latch member for locking said ring in position; said latch member being movably supported in said handle portion in a passage which intersects, and extends normal to, said circular passage, and said latch member further having a portion extending at least to the surface of said handle portion at least at one side thereof so as to permit movement of said latch member out of engagement with said metal ring in order to allow rotation of the metal ring for removal and insertion of keys.
Claim 3
Dependent Claim
40 words
A key ring as recited in claim 1, wherein said spring means has at least at one end thereof a latch cam adapted to be received in said open segment area of said metal ring for locking said metal ring.
Claim 4
Dependent Claim
23 words
A key ring as recited in claim 2, wherein said spring and latch member consist of a single piece formed of plastic material.
Claim 5
Dependent Claim
40 words
A key ring as recited in claim 2, wherein said latch cams have openings formed therethrough and said handle portion has slide members slidably mounted therein, said slide members having projections extending into said cam openings for actuating said cams.
Claim 6
Dependent Claim
24 words
A key ring as recited in claim 2, wherein the sides of said latch cams are inclined such that the latch cams are wedge-shaped.
Claim 7
Dependent Claim
162 words
A key ring comprising: a handle portion having a circular passage extending therethrough at least at one end thereof; a metal ring rotatably disposed in said circular passage, said metal ring having an open segment area; a latch member movably supported in said handle portion; said handle portion having a narrow cavity and spring means having interconnected undulated sections arranged in spaced parallel relationship disposed and contained in said cavity for biasing said latch member toward said metal ring and into said open segment area when said open segment area is in the path of movement of said latch member; the end faces of said metal ring defining said open segment area being inclined so as to define a wedge-formed open segment area of increased width at the radially outer end thereof, and said latch member being a body of circular cross-section forced into said open segment area by said spring means but displaceable therefrom by forceful rotation of said metal ring.
Claim 8
Dependent Claim
162 words
A key ring comprising: a handle portion having a circular passage extending therethrough at least at one end thereof; a metal ring rotatably disposed in said circular passage, said metal ring having an open segment area; a latch member movably supported in said handle portion; said handle portion having a narrow cavity and spring means having interconnected undulated sections arranged in spaced parallel relationship disposed and contained in said cavity for biasing said latch member toward said metal ring and into said open segment area when said open segment area is in the path of movement of said latch member; the end faces of said metal ring defining said open segment area being inclined so as to define a wedge-formed open segment area of increased width at the radially outer end thereof, and said latch member being a body of circular cross-section forced into said open segment area by said spring means but displaceable therefrom by forceful rotation of said metal ring.
Claim 9
Dependent Claim
18 words
A key ring as recited in claim 1 or 6 wherein said spring means consists of elastomeric material.
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) | 1985-04-12 | 1985-10-12 | 1986-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-12 | 1989-10-12 | 1990-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-12 | 1993-10-12 | 1994-04-13 | $7700.00 | Window Closed / Lapsed |