Patent US3315468A successfully refreshed from Google Patents.
US4965616A
Expired / Lapsed
US
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Automatic loading camera with claw spool
Assignee: Konica Minolta Inc
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Filing: 1989-02-23
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Granted: 1990-10-23
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Expires: 2009-02-23
Abstract
Abstract A spool driving type automatic loading camera with a claw spool includes at least one claw portion and a projecting step portion. The claw portion is formed on an outer circumferential surface of a film winding spool and engages with a perforation of a leader portion of a film. The projecting step portion is formed at a portion other than the claw in a circumferential direction and outside the claw.
Inventors
- 👤 Tohru Horiuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:06
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30; G03B17/42; G03B17/425; G03B2217/00; G03B2217/26; G03B2217/261
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
A spool driven, claw winding automatic loading camera, comprising: a film winding spool disposed in the camera for rotation about an axis, the spool including an outer circumferential surface and opposed axial ends; at least one claw portion projecting from the outer circumferential surface of the spool and being disposed to engage perforations in a leader portion of a film roll; and at least one step portion projecting from the outer circumferential surface of the spool and being axially positioned between the at least one claw portion and one of the opposed ends.
Claim 2
Dependent Claim
93 words
A spool driven, claw winding automatic loading camera, comprising: a film winding spool disposed in the camera for rotation about an axis, the spool including an outer circumferential surface and opposed axial ends; at least one claw portion projecting from the outer circumferential surface of the spool and being disposed to engage perforations in a leader portion of a film roll; and at least one step portion projecting from the outer circumferential surface of the spool and being axially positioned between the at least one claw portion and one of the opposed ends.
Claim 3
Dependent Claim
47 words
The camera of claim 1 wherein the outer circumferential surface includes two claw portions projecting therefrom at generally symmetrical, radially opposed positions on said film winding spool, and two of the stepped portions projecting therefrom at generally symmetrical, radially opposed positions between the radially opposed claw portions.
Claim 4
Dependent Claim
23 words
The camera of claim 1 wherein the at least one step portion includes an upper surface which tapers towards the outer circumferential surface.
Claim 5
Dependent Claim
190 words
An automatic loading camera having a spool driven system and a claw winding system, comprising: a cylindrical winding spool located in a film winding chamber formed in the camera, the winding spool having opposed axial ends and having a continuous circumferential outer surface for rotatively receiving a leader portion of a roll of film; a plurality of hook claws circumferentially spaced from each other and projecting from the continuous outer surface to a first distance, the claws being positioned in spaced proximity to one axial end of said spool for engaging perforations in the leader portion of the roll of film; and a plurality of step portions circumferentially spaced from each other and projecting from the outer surface to a second distance, the step portions being positioned axially between the claws and the one axial end to prevent film perforations from engaging the hook claws after the film has made one revolution about the winding spool, said step portions having an upper surface tapered toward said outer surface inwardly from the one axial end to guide the leader portion of the film toward a center of the cylindrical winding spool.
Claim 6
Dependent Claim
190 words
An automatic loading camera having a spool driven system and a claw winding system, comprising: a cylindrical winding spool located in a film winding chamber formed in the camera, the winding spool having opposed axial ends and having a continuous circumferential outer surface for rotatively receiving a leader portion of a roll of film; a plurality of hook claws circumferentially spaced from each other and projecting from the continuous outer surface to a first distance, the claws being positioned in spaced proximity to one axial end of said spool for engaging perforations in the leader portion of the roll of film; and a plurality of step portions circumferentially spaced from each other and projecting from the outer surface to a second distance, the step portions being positioned axially between the claws and the one axial end to prevent film perforations from engaging the hook claws after the film has made one revolution about the winding spool, said step portions having an upper surface tapered toward said outer surface inwardly from the one axial end to guide the leader portion of the film toward a center of the cylindrical winding spool.
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) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |