← Back to Patent Explorer
US3777639A Expired / Lapsed US ⏱️ 0.0 years remaining

Camera casing assembly

Assignee: Balda Werke Photographische Gerate und Kunststof GmbH and Co KG
•
Filing: 1970-03-09
•
Granted: 1973-12-11
•
Expires: 1990-03-09
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A camera in which the parts of the casing are held together through interlocking connections by engagement of catch elements formed on the individual casing parts, eliminating the use of other types of connecting means, such as, screws, rivets, etc. The camera is a so-called ''''one-way camera'''' in which the parts after being assembled cannot be taken apart. In case the camera becomes defective, it is discarded. Release of the casing parts is made possible by the use of a special tool.

Inventors

  • 👤 Karl Heinz Lange

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 04:01
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; Y; Y10; Y10T; Y10T24/00; Y10T24/50

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 215 words
A photographic camera having a casing, said casing comprising a plurality of wall parts connected interlockingly with one another, barb-like catch elements formed on said part, said catch elements being disposed for holding said parts together, said parts being separable manually without the use of tools after being assembled, and a rear cover on the rear side of said casing, said rear cover being openable for inserting and removing film into and out of said casing, respectively, said wall parts comprising elastic walls, catch faces on said walls, said barblike catch elements consisting substantially of hook-shaped lugs flexibly formed on said walls and said lugs disposed for cooperating with said catch faces, said camera having lens, said parts comprising a front wall and a rear wall, said front wall having an opening for said lens , said casing comprising a hinge, a further one of said parts constituting a rear cover, said rear cover swingably attached to said casing by means of said hinge, said parts further comprising side walls, one of said side walls disposed adjacent said hinge running obliquely relative to said front wall and to said rear wall, and said rear cover having a bevelled face for closing said cover tightly under pressure and imparting a bending stress to said rear wall.
Claim 2
Dependent Claim 215 words
A photographic camera having a casing, said casing comprising a plurality of wall parts connected interlockingly with one another, barb-like catch elements formed on said part, said catch elements being disposed for holding said parts together, said parts being separable manually without the use of tools after being assembled, and a rear cover on the rear side of said casing, said rear cover being openable for inserting and removing film into and out of said casing, respectively, said wall parts comprising elastic walls, catch faces on said walls, said barblike catch elements consisting substantially of hook-shaped lugs flexibly formed on said walls and said lugs disposed for cooperating with said catch faces, said camera having lens, said parts comprising a front wall and a rear wall, said front wall having an opening for said lens , said casing comprising a hinge, a further one of said parts constituting a rear cover, said rear cover swingably attached to said casing by means of said hinge, said parts further comprising side walls, one of said side walls disposed adjacent said hinge running obliquely relative to said front wall and to said rear wall, and said rear cover having a bevelled face for closing said cover tightly under pressure and imparting a bending stress to said rear wall.
Claim 3
Dependent Claim 17 words
A photographic camera according to claim 1, all said parts of said casing consisting exclusively of plastic.
Claim 4
Dependent Claim 59 words
A photographic camera according to claim 1, and at least one catch lug on one of said side walls, a catch face on said front wall, said catch lug engaging said catch face, said catch lug comprising a step having an inclined guide face, said step being disposed in a trough-like manner on the inside of said front wall.
Claim 5
Dependent Claim 52 words
A photographic camera according to claim 3, and said catch lugs consisting of a shaft disposed perpendicularly with respect to said front wall, and a catch tooth formed on one of the ends of said shaft, said catch tooth having a locking face cooperating with said catch face on said front wall.
Claim 6
Dependent Claim 372 words
A photographic camera, having a casing, said casing comprising a plurality of wall parts connected interlockingly with one another, barb-like catch elements formed on said parts, said barb like catch elements being disposed for holding said parts together, said parts being separably manually without the use of tools after being assembled, a rear cover on the rear side of said casing, said rear cover being openable for inserting and removing film into and out of said casing, respectively, said wall parts comprising elastic walls, and catch faces on said walls, said barb-like catch elements comprising substantially hook-shaped lugs flexibly formed on said walls and said lugs disposed for cooperating with said catch faces, carrier strap means, a strap nipple, one of said walls having an opening, locking catch arms integrally formed on said one of said walls of said opening, said strap nipple and said catch arms constituting said carrier strap means, said strap nipple disposed for being locked by said arms in such manner as to be removable by application of a torque moment, connecting means for connecting camera accessories to said camera casing, said connecting means comprising a nipple engaging said accessories, locking catch arms laterally arranged in an opening in one of said walls of said casing, said locking catch arms being integrally fomred with said one wall by Recesses in said one wall, said nipple engaging said accessories disposed for being removably locked by said arms, and one of the side wall parts of said plurality of wall parts having a recess, a cover plate fitted in said recess, said cover plate having steps integrally formed thereon, said cover plate being held in said casing by said steps, said cover plate having a first opening for receiving said carrier strap means, said first opening having a first guide diameter and a second, larger guide diameter, said second diameter disposed perpendicularly to said first diameter, said recess having a second opening coinciding with said first opening in said cover plate, and said second opening comprising four lugs arranged in pairs on the inner edge thereof, said pairs of said lugs disposed for locking said strap nipple below said first guide diameter of said first opening of said cover plate.
Claim 7
Dependent Claim 372 words
A photographic camera, having a casing, said casing comprising a plurality of wall parts connected interlockingly with one another, barb-like catch elements formed on said parts, said barb like catch elements being disposed for holding said parts together, said parts being separably manually without the use of tools after being assembled, a rear cover on the rear side of said casing, said rear cover being openable for inserting and removing film into and out of said casing, respectively, said wall parts comprising elastic walls, and catch faces on said walls, said barb-like catch elements comprising substantially hook-shaped lugs flexibly formed on said walls and said lugs disposed for cooperating with said catch faces, carrier strap means, a strap nipple, one of said walls having an opening, locking catch arms integrally formed on said one of said walls of said opening, said strap nipple and said catch arms constituting said carrier strap means, said strap nipple disposed for being locked by said arms in such manner as to be removable by application of a torque moment, connecting means for connecting camera accessories to said camera casing, said connecting means comprising a nipple engaging said accessories, locking catch arms laterally arranged in an opening in one of said walls of said casing, said locking catch arms being integrally fomred with said one wall by Recesses in said one wall, said nipple engaging said accessories disposed for being removably locked by said arms, and one of the side wall parts of said plurality of wall parts having a recess, a cover plate fitted in said recess, said cover plate having steps integrally formed thereon, said cover plate being held in said casing by said steps, said cover plate having a first opening for receiving said carrier strap means, said first opening having a first guide diameter and a second, larger guide diameter, said second diameter disposed perpendicularly to said first diameter, said recess having a second opening coinciding with said first opening in said cover plate, and said second opening comprising four lugs arranged in pairs on the inner edge thereof, said pairs of said lugs disposed for locking said strap nipple below said first guide diameter of said first opening of said cover plate.
Claim 8
Dependent Claim 50 words
A photographic camera according to claim 5, and wing-shaped locking elements on said strap nipple and a locking segment at said opening, said locking elements disposed for engaging said locking segment in such manner that a reverse rotation of said locking elements is made possible by a predetermined torque moment.
Claim 9
Dependent Claim 100 words
A photographic camera according to claim 6, each pair of said lugs comprising one resilient and one rigid lug, said resilient and said rigid lugs projecting into said opening disposed along the periphery of said opening alternating in consecutive order, and each one of said resilient lugs consisting of a shaft arranged along the outer edge of said wing-like locking elements and a catch tooth on one end of said shaft, said tooth adapted to engage behind one of said locking segments while said rigid lugs are in position on the opposite sides of each one of said locking elements.
Claim 10
Dependent Claim 43 words
A photographic camera according to claim 7, and said resilient lugs being integrated components of said casing of said camera and recesses formed in said casing concentrically around said opening, the width of said recesses corresponding to the width of said resilient lugs.
Claim 11
Dependent Claim 66 words
A photographic camera according to claim 8, and a disk-shaped plate, said wing-shaped lugs formed on said plate, said plate having a diameter corresponding to said first small guide diameter, and a handle formed preferably at right angle to said locking segments on said plate, said handle covering parts of said opening not filled by said plate in the locked position of said carrier strap nipple.
Claim 12
Dependent Claim 34 words
A photographic camera according to claim 5, and said cover plate consisting of a flat plate made of metal and recesses formed on said side walls, said recesses having undercuts for receiving said steps.
Claim 13
Dependent Claim 29 words
A photographic camera according to claim 5, and said cover plate consisting of plastic, and recesses formed on said side walls, said recesses having undercuts for receiving said steps.

References Cited (Backward Citations)

CA480651A Cited
US1599843A Cited
US2148011A Cited
US2309737A Cited
US2406026A Cited
GB910337A Cited
GB1047996A Cited
GB1060937A Cited
DE1280660B Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-10 1977-06-11 1977-12-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-10 1981-06-11 1981-12-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-10 1985-06-11 1985-12-11 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag