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US 4,379,643 AGranted
Timepiece case/backcover assembly
AssigneeTimex Corporation
InventorJames J. Halicho
Life of this patent
Estimating the term…
Abstract
Disclosed is a timepiece construction in which the case and back cover member typically have snap-fit engagement surfaces with a polygonal plan profile composed of a plurality of circular arc surface portions having a common center point and a plurality of rectilinear surface portions connecting the circular arc surface portions together. Snap-fit engagement between the surfaces is effected only at the circular arc surface portions. A sealing gasket may be interposed and compressed between a case flange and inside surface of the back cover member.
Claims14
In a timepiece construction, the combination of:
- (a) a case having a first engagement surface with a polygonal plan profile composed of a plurality of first circular arc surface portions having a common center point and a plurality of first noncircular surface portions connecting the first circular arc surface portions together, and
- (b) a back cover member having a second engagement surface with a polygonal plan profile composed of a plurality of second circular arc surface portions having a common center point and a plurality of second noncircular surface portions connecting the second circular arc surface portions together, the second circular arc surface portions being adapted for snap-fitting against the respective first circular arc surface portions to hold the back cover member and case releasably together.
In a timepiece construction, the combination of:
- (a) a case having a first engagement surface with a polygonal plan profile composed of a plurality of diametrically opposed first circular arc surface portions connected together by a plurality of first noncircular surface portions, and
- (b) a back cover member having a second engagement surface with a polygonal plan profile composed of a plurality of diametrically opposed second circular arc surface portions connected together by a plurality of second noncircular surface portions, the second circular arc surface portions being adapted for snap-fitting against the respective first circular arc surface portions to hold the back cover member releasably to the case.
In a timepiece construction, the combination of:
- (a) a case having a first engagement surface with a polygonal plan profile composed of a plurality of diametrically opposed first circular arc surface portions connected together by a plurality of opposed first rectilinear surface portions, and
- (b) a back cover member having a second engagement surface with a polygonal plan profile composed of a plurality of diametrically opposed second circular arc surface portions connected together by a plurality of opposed second rectilinear surface portions, the second circular arc surface portions being adapted for snap-fitting against the first circular arc surface portions to hold the back cover member releasably to the case.
In a timepeice construction, the combination of:
- (a) a case having a first engagement surface with a polygonal plan profile composed of a plurality of first circular arc surface portions having a common center point and a plurality of first rectilinear surface portions connecting the first circular arc surface portions together, and
- (b) a back cover member having a frontwardly projecting rim for snap-fitting onto the first engagement surface of said case, the rim having a second engagement surface with a polygonal plan profile composed of a plurality of second circular arc surface portions having a common center point and a plurality of second rectilinear surface portions connecting the second circular arc surface portions together, the second circular arc surface portions of said rim being adapted for snap-fitting onto the first circular arc surface portions of the first engagement surface to hold the back cover member and case releasably together.
In a timepiece construction, the combination of:
- (a) a case having a rearwardly extending flange with a first engagement surface having a polygonal plan profile composed of a plurality of first circular arc surface portions having a common center point and a plurality of first noncircular surface portions connecting the first circular arc portions together, said flange terminating rearwardly in a sealing surface,
- (b) a back cover member having a back portion with a frontwardly extending rim, the rim having a second engagement surface with polygonal plan profile composed of a plurality of second circular arc surface portions having a common center point and a plurality of second noncircular surface portions connecting the second circular arc portions together, said second circular arc surface portions being adapted for snap-fitting against the first circular arc surface portions to hold the back cover member and case together with the sealing surface being spaced from and facing the back portion of said back cover member, and
- (c) gasket means interposed between the sealing surface and back portion.
In a timepiece construction, the combination of:
- (a) a case having a rearwardly extending flange, said flange having a first engagement surface with a polygonal plan profile composed of a plurality of diametrically opposed first circular arc surface portions connected together by a plurality of opposed first rectilinear surface portions, said flange terminating rearwardly in a sealing surface,
- (b) a back cover member having a back portion with a frontwardly extending rim, the rim having a second engagement surface with polygonal plan profile composed of a plurality of diametrically opposed second circular arc surface portions connected together by a plurality of opposed second rectilinear surface portions, said second circular arc surface portions being adapted for snap-fitting against the first circular arc surface portions to hold the back cover member and case together with the sealing surface being spaced from and facing the back portion of said back cover member, and
- (c) gasket means interposed between the sealing surface and back portion.
Dependencies are inferred from the claim text.