Claims
- 1. A camera having a camera housing and comprising:
- a lens protection barrier member for covering an imaging lens;
- a cam lever, connected to said barrier member, movable along an optical axis of said imaging lens, and rotatable around said optical axis during opening/closing of said barrier member;
- a variable force spring member, connected to said cam lever, urging said cam lever to rotate in a direction in which said barrier member opens; and
- a cam fixed to said camera housing on a path on which said cam lever moves along said optical axis and having a cam surface engagable with said cam lever by movement of said cam lever along said optical axis;
- said cam lever being urged against said cam surface by said spring force and moving along said cam surface while rotating during opening/closing of said barrier member, the shape of said cam surface being correlated with the force of said spring member so as to vary a load force exerted by said cam lever in order to maintain said load force substantially constant as said force of said spring member varies.
Priority Claims (5)
Number |
Date |
Country |
Kind |
1-287603 |
Nov 1989 |
JPX |
|
1-131661 U |
Nov 1989 |
JPX |
|
1-133980 U |
Nov 1989 |
JPX |
|
1-299568 |
Nov 1989 |
JPX |
|
2-065494 U |
Jun 1990 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 08/418,899 filed Apr. 7, 1995, which is a continuation of application Ser. No. 08/270,319 filed Jul. 5, 1994 (abandoned), which is a continuation of application Ser. No. 08/138,385 filed Oct. 20, 1993 (abandoned), which is a continuation of application Ser. No. 07/717,346 filed Jun. 18, 1991 (abandoned), which is a continuation-in-part of application Ser. No. 07/607,710 filed Nov. 1, 1990 (abandoned).
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4864338 |
Wakabayashi |
Sep 1989 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
418899 |
Apr 1995 |
|
Continuations (3)
|
Number |
Date |
Country |
Parent |
270319 |
Jul 1994 |
|
Parent |
138385 |
Oct 1993 |
|
Parent |
717346 |
Jun 1991 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
607710 |
Nov 1990 |
|