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US 4,281,837 AGranted
Water tight seal structure for camera
AssigneeOlympus Optical Co., Ltd.
InventorAkihiko Hashimoto
Life of this patent
Estimating the term…
Abstract
A water tight seal structure for a camera or other device comprises a step formed in the upper end of an opening provided in the frame of the device to pass a rotating shank body which forms a movable operating member of the device. Water repellent rubber is fixedly secured to the step. The inner peripheral surface or the upper surface of the water repellent rubber is maintained in tight engagement with the adjacent surface of the shank body to prevent an ingress of water into the device.
Claims23
A water tight seal structure comprising:
- a frame of a device to be sealed, said frame having an opening in it for tightly accommodating a movable operating member of said device, said opening having an upper end;
- a step formed in said upper end of said opening;
- a sleeve made of a flexible water-impermeable material disposed on said step, said sleeve having at least one surface abutting and adhesively coupled to said step in a water tight manner such that water cannot pass between said sleeve and said step into said frame;
- said sleeve having an inner peripheral surface tightly but movably abutting said movable operating member accommodated in said opening;
- and
- means for directing the passage of water under pressure from outside said frame to said sleeve, said means directing said water against said sleeve in such a manner that said sleeve is biased against said movable member by the pressure of said water so as to form a greater seal between said sleeve and said movable member.
3 more elements
A water tight structure, comprising:
- a movable operating member of a device to be sealed;
- a section of said device having in it an opening tightly accommodating said member, said opening having an upper end;
- a step formed in said upper end of said opening;
- a sleeve made of a flexible, water-impermeable material one surface of which is disposed flatly against and adhesively coupled to said step in a water tight manner such that water cannot pass between said step and said sleeve into said device;
- and said sleeve having an inner peripheral surface tightly but movably abutting said member;
- and
- means for directing the passage of water under pressure from outside said device to said sleeve, said means directing said water against said sleeve in such a manner that said sleeve is biased against said movable member by the pressure of said water so as to form a greater seal between said sleeve and said movable member.
4 more elements
Dependencies are inferred from the claim text.