Claims
- 1. A retractable undercarriage for a cabinet comprising at least three interconnected supporting members moveably mounted on said cabinet for movement between extended position and retracted position, at least one of said members comprising a wheel means positioned adjacent one end of said cabinet and at least another of said supporting members being leg means for supporting said cabinet in a fixed position and located adjacent an opposite end of said cabinet from said one end, means for moving both said wheel means and said leg means relative to said cabinet including means interconnecting said wheel means and said leg means to move said wheel means to said extended position while substantially simultaneously moving said leg means to retracted position, and to move said leg means to extended position while substantially simultaneously moving said wheel means to retracted position.
- 2. A retractable undercarriage as defined in claim 1 wherein said leg means comprising a pair of leg members positioned one at each of a pair of corners at sides of said cabinet at said opposite end of said cabinet.
- 3. A retractable undercarriage as defined in claim 2 wherein said leg members are relatively movable to said cabinet to permit one of said leg members to project further from said cabinet than the other of said pair of leg members whereby said leg members provide self-adjusting supports for said cabinet to stabilize said cabinet on an uneven surface.
- 4. A retractable undercarriage as defined in claim 2 wherein said means for moving comprises a lever and arms connecting said lever to said leg members for movement of said leg members between said retracted and said extended positions when said lever is operated.
- 5. A retractable undercarriage as defined in claim 4 wherein said lever is movably mounted on said cabinet on an axle extending between said one and said opposite end of said cabinet and wherein operation of said lever rotates said axle and said wheel means is a caster mounted to rotate with said axle to move said caster between said extended and retracted position.
- 6. A retractable undercarriage as defined in claim 5 wherein said leg members are self-adjusting to provide a stable support on an uneven surface, and said axle at its end adjacent said arms is movable laterally between said leg members to permit said self-adjustment.
- 7. A retractable undercarriage as defined in claim 6 wherein each of said leg members is mounted on said cabinet by means of a pin extending through a cam slot and wherein each of said cam slots slopes at an angle from the outside of said cabinet inwardly relative to said cabinet.
- 8. A retractable undercarriage as defined in claim 5 further comprising a wheel adjacent each said leg member projecting below bottom of said cabinet and supporting said cabinet when said leg members are in retracted position, and wherein said caster is mounted to swivel about a substantially vertical axis to facilitate steering of said cabinet when said caster is in extending position.
- 9. A retractable undercarriage as defined in claim 6 further comprising a wheel adjacent each said leg member projecting below bottom of said cabinet and supporting said cabinet when said leg members are in retracted position, and wherein said caster is mounted to swivel about a substantially vertical axis to facilitate steering of said cabinet when said caster is in extending position.
- 10. A retractable undercarriage as defined in claim 7 further comprising a wheel adjacent each said leg member projecting below bottom of said cabinet and supporting said cabinet when said leg members are in retracted position, and wherein said caster is mounted to swivel about a substantially vertical axis to facilitate steering of said cabinet when said caster is in extending position.
- 11. A retractable undercarriage as defined in claim 2 wherein said wheel means comprises a caster centrally located relative to said cabinet and adapted to swivel on a substantially vertical axis when said caster is in extended position.
- 12. A retractable undercarriage as defined in claim 3 wherein said wheel means comprises a caster centrally located relative to said cabinet and adapted to swivel on a substantially vertical axis when said caster is in extended position.
- 13. A retractable undercarriage as defined in claim 4 wherein said wheel means comprises a caster centrally located relative to said cabinet and adapted to swivel on a substantially vertical axis when said caster is in extended position.
Priority Claims (1)
Number |
Date |
Country |
Kind |
411175 |
Sep 1982 |
CAX |
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Parent Case Info
This is a continuation of Ser. No. 521,366 filed Aug. 8, 1983, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
3168 |
Mar 1874 |
CAX |
481260 |
Feb 1952 |
CAX |
1121789 |
Apr 1982 |
CAX |
Continuations (1)
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Number |
Date |
Country |
Parent |
521366 |
Aug 1983 |
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