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An automatic bed maker which uses the expansion of inflatable bladder to straighten, align, and tuck-in bed-cover assembly.
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| Number | Title | Issue Date |
| 5191715 | Drafting head for a drafting machine The invention concerns a drafting head for a drafting machine, with a gring member (4) having several actuating elements (6, 8, 10) arranged on the gripping member (4) and capable of being actuated by a hand of the user that is resting on the gripping me... | 03/09/1993 |
| 4580351 | Scale balancing device in universal parallel ruler device A scale balancing device for balancing the weight of a scale of a universal parallel ruler, having a head structure having a rotating scale support rotatably mounted thereon on which the scales are carried, the scale support and scales having a center of ... | 04/08/1986 |
| 4270277 | Universal parallel ruler with converted display of displacement A universal parallel ruler is disclosed. It is an arm-type ruler and includes a first base attached to a drawing board, a first arm attached to the first base, a second base attached to the opposite end of the first arm, a second arm attached on one end t... | 06/02/1981 |
