Abstract A drawing table comprising a cylindrical elevatory member urged to move upwardly by a gas spring means or other rod-like telescopic resilient means and slidably supported by an upstanding cylindrical support member supported in turn by a horizontal support base. The vertical position of a drawing board support frame mounted on the cylindrical elevatory member can be adjusted freely by moving the cylindrical elevatory member up and down along the cylindrical support member. The rod-like telescopic resilient means is detachably inserted at its lower end in a receiving portion formed in the horizontal support base and at its upper end in a receiving portion formed in a cap removably mounted on the upper end of the cylindrical elevatory member, and disposed such that is center vertical axis is in the same position as the center vertical axis of the cylindrical support member. By removing the cap from the upper end of the cylindrical elevatory member, it is possible to take out the rodlike telescopic resilient means freely from within the cylindrical elevatory member. There is provided a safety mechanism which ensures that the cap is removed from the upper end of the cylindrical elevatory member only when the rod-like telescopic resilient means is fully extended and disposed in its uppermost position.
Inventors
👤 Seiichi Komura
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-01 08:50
CPC Classifications
A; A47; A47B; A47B27/00; A47B27/14; A47B27/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
184 words
A drawing table comprising a self-containing rod-like telescopic resilient means, a horizontal support base formed therein with a recess means for slidably removably receiving a lower end of said rod-like telescopic resilient means, a cylindrical support member disposed upright and fixed at a lower end thereof to said horizontal support base, a cylindrical elevatory member slidably supported in said cylindrical support member, and a cap removably mounted on an upper end of said cylindrical elevatory member and formed at its underside with a receiving portion means for slidably removably receiving and supporting therein an upper end of said rod-like telescopic resilient means, said rod-like telescopic resilient means being fitted in said cylindrical elevatory member and slidably removably received at its lower end in said recess means formed in said horizontal support base and slidably detachably received and supported at its upper end in said receiving portion means of said cap, said cap being mounted at the uppermost end of said cylindrical elevatory member, whereby the cylindrical elevatory member can be urged to move upwardly by the biasing force of the rodlike telescopic resilient means.
Claim 2
Dependent Claim
184 words
A drawing table comprising a self-containing rod-like telescopic resilient means, a horizontal support base formed therein with a recess means for slidably removably receiving a lower end of said rod-like telescopic resilient means, a cylindrical support member disposed upright and fixed at a lower end thereof to said horizontal support base, a cylindrical elevatory member slidably supported in said cylindrical support member, and a cap removably mounted on an upper end of said cylindrical elevatory member and formed at its underside with a receiving portion means for slidably removably receiving and supporting therein an upper end of said rod-like telescopic resilient means, said rod-like telescopic resilient means being fitted in said cylindrical elevatory member and slidably removably received at its lower end in said recess means formed in said horizontal support base and slidably detachably received and supported at its upper end in said receiving portion means of said cap, said cap being mounted at the uppermost end of said cylindrical elevatory member, whereby the cylindrical elevatory member can be urged to move upwardly by the biasing force of the rodlike telescopic resilient means.
Claim 3
Dependent Claim
18 words
A drawing table according to claim 1 wherein said rod-like telescopic resilient means is a gas spring means.
Claim 4
Dependent Claim
67 words
A drawing table according to claim 1 wherein said recess means formed in said horizontal support base is disposed in the center of said cylindrical elevatory member, and said receiving portion means formed in the cap is a recess defined by a downwardly diverging wall surface portion of the underside of the cap and adapted to receive therein the upper end of the rod-like telescopic resilient means.
Claim 5
Dependent Claim
107 words
A drawing table according to claim 1 further comprising a safety mechanism comprising a hole formed in the cap for inserting therein a tool for turning the cap, and a member for preventing the insertion of such tool in said hole disposed in said hole when the upper end of the rod-like telescopic resilient means is in engagement with the underside of the cap so as to keep the cap from being turned by the tool, whereby the cap can be Removed from the upper end of the cylindrical elevatory member only when the rod-like telescopic resilient means is fully extended and disposed in its uppermost position.